Inventor

Rolf Dhein

Inventor

Krefeld, DE

Overview

1976–2001

Patent span

Chemistry

Primary field (CPC C)

Patents· 153 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C08Gprimary

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds25%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients12%

C08LCompositions of macromolecular compounds10%

C09DCoating compositions, e.g. paints, varnishes or lacquers9%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds5%

Y10TTechnical subjects covered by former us classification5%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%

C10MLubricating compositions3%

H01BCables3%

B01DSeparation3%

PatentTitleYear

6,319,981'Coating compounds, a process for their production and their use for the production of coatings'2001 5,942,593'Cycloaliphatic thermoplastic polyurethane elastomers'1999 5,747,586'High-impact molding compounds based on polyisobutylene-containing polycarbonate'1998 5,668,204'Stabilization of polycarbonates having high heat distortion temperatures'1997 5,633,339'Use of tertiary aliphatic monocarboxylic acids as chain terminators for the preparation of polycarbonates and of polyester carbonates'1997 5,554,716'Use of hydrogenated abietic acid as a chain terminator for the production of polycarbonates and polyester carbonates'1996 5,552,477'Coating compound, a process for its preparation and its use for the production of coatings'1996 5,525,674'Polycarbonates with aliphatic ketocarboxyl end groups, mixed with known aromatic polycarbonates, their preparation and their use'1996 5,512,339'Decomposable packing material'1996 5,430,121'Thermoplastic polyurethanes modified by siloxane block copolymers'1995 5,420,047'Method for carrying out immunodiagnostic tests'1995 5,407,966'Recyclable thermoplastic foam with a high glass transition temperature II'1995 5,405,664'Tubular casing with an organochlorine-free coating impermeable to oxygen and water vapor, a process for its production and its use'1995 5,391,641'Segmented N-alkyl polyurethane amides'1995 5,374,704'Pure, in particular catalyst-free polyurethanes'1994 5,310,557'Shaped articles based on polyether block amide elastomers'1994 5,308,489'Blends of polyether copolycarbonates and high molecular weight film-forming thermoplastics'1994 5,304,400'Process for coating heat resistant substrates with two component stoving compositions'1994 5,300,543'Recyclable thermoplastics foam of high glass temperature'1994 5,283,213'Moulding compounds for the production of inorganic sintered mouldings and a process for the production of inorganic sintered mouldings'1994 5,238,570'Asymmetric semipermeable membranes of aromatic polycondensates, processes for their preparation and their use'1993 5,212,224'Free flowing moulding materials based on polyamides containing bisphenols'1993 5,194,467'Stabilization of highly heat distortion resistant polycarbonates'1993 5,190,932'Microbicidal formulations comprising water dispersible polymers with chemically bonded ammonium groups and fatty acid radicals'1993 5,179,146'Modified polyisocyanates, a process for their production and their use'1993 5,160,436'Asymmetric sandwich membrane system having reduced ascorbate interference'1992 5,149,761'Aromatic ether imides'1992 5,143,986'Polymer mixtures of an aromatic polyether ketone and a thermoplastic polymer'1992 5,144,055'Liquid crystalline bis-chlorocarbonic acid esters'1992 5,143,956'Free-flowing polyamide molding compounds'1992 5,140,066'Poly (meth)acrylates with grafted-on polycarbonate chains, their production and use'1992 5,128,400'Polyamide molding compounds containing bisphenols of high glass temperature'1992 5,105,004'Aromatic ethers'1992 5,093,457'Production of polyamide imides'1992 5,089,342'Wood or wood product coated with an aqueous, air-drying coating agent'1992 5,086,157'Aromatic polyether sulphones based on dihydroxy-diphenyl-cyclo-alkanes and films therefrom'1992 5,071,923'Surface-active copolymers and their use for the production of polyurethane powders'1991 5,061,756'Process for the preparation of polyurethane powders'1991 5,043,403'Polycarbonates containing mesogenic compounds as end groups, their preparation and their use'1991 4,994,579'Aromatic ether imides'1991 4,985,508'Process for the production of polyester-polyamide block polymers'1991 4,980,441'Liquid crystalline bis-chlorocarbonic acid esters, a process for their preparation and liquid crystalline n-alkyl polyurethanes and polycarbonates prepared from them'1990 4,973,652'Process for the production of aromatic polycarbonates, aromatic polyester carbonates and aromatic polyesters with p containing catalyst and mixture of hydrocarbons'1990 4,968,430'Composite membranes, processes for their preparation and their use'1990 4,964,890'Aromatic polyether ketones'1990 4,959,452'Alpha-amino-epsilon-caprolactam-modified polyamide preparation'1990 4,946,927'Preparation of aromatic polycarbonates, aromatic polyester carbonates and aromatic polyesters with organic phase comprising mixture of hydrocarbons'1990 4,945,137'Binder combinations and a process for the production of flat materials'1990 4,927,903'Diphenol monoesters of carboxylic acids and process for their preparation'1990 4,919,514'Optical fibres based on polycarbonate fibres, and a process for the production thereof'1990 4,918,148'Polyamide modified with monoisocyanates'1990 4,895,921'Water soluble or dispersible blocked polyisocyanates and a process for their preparation and use'1990 4,892,927'.alpha.-amino-.epsilon.-caprolactam-modified polyamide of dicarboxylic acids/diamines'1990 4,886,869'Thermotropic aromatic polyester carbonates, a process for their preparation and their use'1989 4,861,815'Hydrophobicized, easily-flowing thermoplastic polyamide containing monoepoxide'1989 4,824,639'Test device and a method for the detection of a component of a liquid sample'1989 4,820,771'High impact polyamides'1989 4,769,177'Electrically conductive and antistatic moulding compositions'1988 4,762,901'Process for the preparation of polymeric networks having superstructures, corresponding polymeric networks and the use thereof'1988 4,754,001'Thermosetting cyanate resin and the use thereof for the production of composite materials and IPNs'1988 4,754,000'Activated anionic polymerization of lactams'1988 4,745,146'Reinforced polyamides having improved flow behavior'1988 4,735,721'Polyether-copolycarbonates for dialysis membranes'1988 4,734,220'Fusible electroconductive mixtures'1988 4,710,529'Stabilized thermoplastic moulding materials based on ABS polymers and acyl phosphanoxides'1987 4,694,041'Polymerizable compositions and the use of arylamines as hardening accelerators for these compositions'1987 4,684,746'Activated anionic polymerization of lactams'1987 4,673,713'Arylamine derivatives which can be incorporated as copolymerized units in unsaturated resins, the preparation of these derivatives and their use as curing accelerators'1987 4,661,104'Active compound release systems'1987 4,634,791'Arylamine derivatives which can be incorporated as co-polymerized units in unsaturated resins, the preparation of these derivatives and their use as curing accelerators'1987 4,631,319'Thermosetting cyanate resin and the use thereof for the production of composite materials and IPNs'1986 4,628,069'Polyamides containing phenolic compounds'1986 4,628,079'Polyamide imides produced from either lactams or polyamides with isocyanates or anhydrides in which products are precipitated with a non-solvent'1986 4,627,949'Process for the preparation of shaped articles of stabilized polycarbonate by the devolatilizing injection-moulding or devolatilizing extrusion process'1986 4,624,981'Process for the production of polyamideimides from polyisocyanates, polycarboxylic acid anhydrides and lactams or polyamides in which the reaction products are precipitated with a non-solvent'1986 4,623,346'Isobutylene polymer active compound release systems'1986 4,619,966'Process for the production of coated substrates'1986 4,616,053'Hydrophobic polyamides'1986 4,611,034'Branched thermoplastically processible impact-resistant polyamides'1986 4,609,699'Polyarylene sulphides with reduced corrosion'1986 4,607,070'Polyether-copolycarbonates for dialysis membranes'1986 4,600,752'Easy-flowing impact-resistant polyamide modified with oxycarbonyl isocyanate'1986 4,563,516'Polyether-polycarbonates for dialysis membranes'1986 RE032046'Solutions for stabilizing thermoplastic polycarbonates'1985 4,549,006'Polyamideimides produced from either lactams or polyamides with isocyanates and anhydrides as thermoplasts'1985 4,548,970'Polyamideimides prepared by reacting either lactams or polyamides with polyisocyanates and anhydrides using a lactam as an additive'1985 4,546,138'Process for the production of polyamide imides by using a phenol in the workup of the material'1985 4,535,149'Process for the production of polyarylene sulphides'1985 4,520,147'Flame-prooved polyamide moulding materials'1985 4,506,066'Thermoplastic polycarbonates, their preparation and their use as shaped articles and films'1985 4,499,000'Power-transmission method uses spirocyclic ketals'1985 4,490,266'Process for the preparation of liquids of low inflammability and high viscosity index and the use thereof'1984 4,488,987'Doped polymeric organic electrical conductors and a process for their manufacture'1984 4,481,123'Polyethers, their preparation and their use as lubricants'1984 4,456,717'Stabilizer compositions, their use for stabilizing thermoplastic, polycarbonates and stabilized thermoplastic polycarbonates'1984 4,456,729'Binders for aqueous stoving lacquers based on polyesters and a process for the production thereof'1984 4,447,583'Oxidized polyacetylene and a process for the preparation thereof'1984 4,435,544'Mixtures of polycarbonate elastomers, containing hydrogenated dimeric fatty acid esters as condensed units, and polyolefines and, optionally, other polycarbonates'1984 4,430,492'High-molecular, segmented, thermoplastically processable, aromatic polycarbonates containing co-condensed dimeric fatty acid esters, their preparation and their use'1984 4,430,504'Silyl ethers, a process for their production and their use as polymerization initiators'1984 4,424,400'Oligoisobutylcyclohexane, a process for its preparation and its use'1984 4,418,174'Process for the preparation of polyesters using mannitol or sorbitol derivatives, mixtures of polyesters and these mannitol or sorbitol derivatives and the use thereof for the production of aqueous stoving lacquers'1983 4,413,116'Process for the preparation of polyesters or alkyd resins, resins which may be obtained according to this process and the use thereof as lacquer binders'1983 4,408,027'Foils of polyacetylene'1983 4,400,489'Aerially-crosslinking polyacrylate coating agents'1983 4,397,971'Thermoplastic plastics containing burr-shaped or fibrous doped polyacetylene particles and process for the production thereof'1983 4,396,736'Flame-proofed polyamide moulding materials'1983 4,367,303'Solutions for stabilizing thermoplastic polycarbonates'1983 4,362,635'Lactone-modified ester oils'1982 4,346,044'Water-soluble air-drying alkyd resins, process for their preparation and their use as bases for non-yellowing lacquers'1982 4,340,688'Process for the preparation of maleinate oils'1982 4,324,934'Hydrocarbon, a process for its production and its use as a reactive thinner for air-drying lacquers'1982 4,324,880'.beta.-Hydroxybutyric acid polyesters, a process for their production and their use as starting materials for lacquers'1982 4,323,501'Esters of phosphorous acid'1982 4,321,170'Aqueous polyester dispersions'1982 4,321,336'High impact polyamide blends'1982 4,307,227'Ester-modified polyamides'1981 4,292,187'Lubricating oils for the working of metals'1981 4,288,569'Power lacquer binders and process for the preparation thereof'1981 4,287,315'Polyamide blends'1981 4,267,082'Air-cross-linkable polyacrylate lacquer binders containing chemically fixed wood preservatives'1981 4,255,560'Transparent copolyamides from 2,4\'-PACM'1981 4,248,978'Pulverulent coating composition'1981 4,225,483'Boric acid esters and oxetanes for stabilizing phosphite-free polycarbonates'1980 4,223,127'Polyamides from 2,4\'-diaminodicyclohexyl methane'1980 4,212,816'Carboxylic acid esters of pentaerythritol'1980 4,205,159'Transparent polyamides from PACM and a mixture of dicarboxylic acids'1980 4,195,163'Activated anionic polymerization of lactams with liquid isocyanatoallophanate activator'1980 4,195,164'Transparent polyamides'1980 4,191,819'Activated anionic polymerization of lactam with partially masked polyisocyanate'1980 4,186,116'Air-drying and oven-drying acrylate lacquer binders'1980 4,180,493'Coating compositions for polycarbonates'1979 4,178,261'Carboxylic acid esters and their use as a base lubricating oil'1979 4,171,294'Stoving lacquers containing reactive diluents'1979 4,146,519'Air-drying acrylate lacquer binders'1979 4,129,537'Air-drying acrylate lacquer binders'1978 4,128,532'Polyetheresters which contain hydroxyl groups and the use thereof in the production of flame resistant synthetic resins'1978 4,112,012'Pulverulent coating agents'1978 4,100,223'Process for the production of high-impact thermoplastic moulding compositions'1978 4,073,769'Esters of phosphorous acid'1978 4,046,742'Compositions containing hydroxyl groups and their use for the production of flameproof plastics'1977 4,042,547'Environmentally harmless stoving lacquer systems based on alkyd resins containing condensed monohydric alcohols'1977 4,035,438'Impact resistant polymer mixtures'1977 4,031,052'Aqueous stoving lacquer containing .epsilon.-caprolactam as a reactive diluent'1977 4,031,047'Non-aqueous stoving lacquers containing .epsilon.-caprolactam as reactive diluent'1977 4,029,617'Process for the production of water-dilutable binders based on air-drying short-oil alkyd resins'1977 4,022,726'Stoving lacquer systems having a high solids content and comprising an .epsilon.-caprolactone'1977 4,014,708'Liquid stoving-lacquer systems based on oil-free polyesters'1977 4,001,348'Unsaturated polyester resins containing additional accelerators'1977 3,983,306'Composite sheet structures'1976 3,966,836'Pulverulent coating materials'1976 3,935,138'Pulverulent binders'1976 3,932,358'Pulverent coating materials containing polyoxazolines and polyesters based on succinic anhydride'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2001Patents assigned to BAYER AG (149)· patent assignee history

1976–2001Based in Krefeld, DE· patent location history

1980–1984Based in Krefeld-Uerdingen, DE· patent location history

1981Patents assigned to DHEIN ROLF (1)· patent assignee history

1981Patents assigned to FAHNLER FRIEDRICH (1)· patent assignee history

1981Patents assigned to MEYER ROLF VOLKER (1)· patent assignee history

1992Patents assigned to MILES INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BAYER AG	149	1976–2001
DHEIN ROLFself	1	1981
FAHNLER FRIEDRICH	1	1981
MEYER ROLF VOLKER	1	1981
MILES INC	1	1992

Locations

Location	Patents	Span
Krefeld, DE	151	1976–2001
Krefeld-Uerdingen, DE	2	1980–1984