Inventor

Klaus Nachtkamp

Inventor

Dusseldorf, DE

Overview

1979–2014

Patent span

Chemistry

Primary field (CPC C)

Patents· 49 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 bonds32%

C09DCoating compositions, e.g. paints, varnishes or lacquers10%

Y10TTechnical subjects covered by former us classification9%

C08JWorking-up7%

C07CAcyclic or carbocyclic compounds6%

C08LCompositions of macromolecular compounds6%

D06NWall, floor, or like covering materials, e.g. linoleum, oilcloth, artificial leather, roofing felt, consisting of a fibrous web coated with a layer of macromolecular material5%

C14CChemical treatment of hides, skins or leather, e.g. tanning, impregnating, finishing3%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

C03CChemical composition of glasses, glazes or vitreous enamels2%

PatentTitleYear

8,722,092'Nanoparticles made of amorphous cellulose'2014 8,338,494'Nanoparticles from slightly oxidised cellulose'2012 8,182,839'Production of cellulose nanoparticles'2012 7,071,326'Anionic cellulose nitrate derivatives and aqueous dispersions thereof'2006 6,509,396'Coating agent emulsion and its use in lacquers'2003 6,005,046'Polyisocyanates blocked with 3,5-dimethyl-1,2,4-triazole'1999 5,981,653'Process for the production of aqueous stoving coating compositions'1999 5,900,510'Process for the preparation of diaminodipropyl ethers and hydroxyaminodipropyl ethers'1999 5,889,106'Polyisocyanates blocked with 3,5-dimethyl-1,2,4-triazole'1999 5,852,106'Coating compositions for glass substrates'1998 5,804,647'Aqueous polyurethane-ureas, a process for their production and their use in coating compositions'1998 5,789,620'Process for the preparation of 1,4-bis(aminomethyl) cyclohexane'1998 5,747,582'Aqueous coating compositions and their use for the preparation of coatings that are permeable to water vapor'1998 5,747,628'Polyisocyanates containing ether and urethane groups, a process for their preparation and their use in the production of polyurethane lacquers'1998 5,744,633'Process for the production of diurethanes and their use for the production of diisocyanates'1998 5,731,458'Process for thermally cracking carbamic acid esters'1998 5,716,676'Aqueous coating compositions and their use for the preparation of coatings that are permeable to water vapor'1998 5,629,402'Coating compositions and their use for the preparation of coatings permeable to water vapor'1997 5,473,011'Polyisocyanate mixtures, a process for their preparation and their use as cross-linking agents in coating compositions'1995 5,334,637'Isocyanatocarboxylic acids, a process for their preparation and their use in coating compositions as cross-linking agents'1994 5,306,740'Process for the production of brominated chlorine-substituted poly-1,3-butadiene'1994 5,236,741'Process for the production of polyurethane coatings'1993 5,219,975'Process for the preparation of amines, the amines thus obtained and the use thereof as hardeners for epoxide resins'1993 5,215,618'A process for bonding substrates with an ester group-containing hot melt adhesive'1993 5,141,987'Aqueous coating compositions containing water dispersible polyurethane polyureas as binders and the coatings produced therefrom'1992 5,142,081'Process for the preparation of O-silylated hydroxyl compounds and their use for the preparation of isocyanates containing ester groups'1992 5,126,170'Process for the production of polyurethane coatings'1992 5,096,994'Polyisocyanates containing ester groups, a process for the production of these polyisocyanates and their use in polyurethane coating compositions'1992 5,061,775'Heat curable mixtures and their use for the formation of coatings on heat resistant substrates'1991 4,876,302'Polyurethane dispersions and the use thereof as finishing agents'1989 4,829,122'Process for the preparation of aqueous polyurethane dispersions and solutions'1989 4,745,151'Process for the production of aqueous dispersions of polyurethane polyureas, the dispersions obtainable by this process and their use as coating compositions'1988 4,743,470'Spreading pastes containing polyurethane plastics and a process for the production of polyurethane coatings permeable to water vapor'1988 4,728,542'Ionically modified pur spreading pastes and their use'1988 4,652,466'Coating agents of polyurethane dispersions and the use thereof for top coats and finishes'1987 4,636,545'Aqueous dispersions of graft polymers or copolymers, a process for their production and their use as hydrophobizing and oleophobizing agents for textiles'1987 4,608,413'Aqueous polyurethane stoving lacquers and the use thereof for the production of lacquer films and coatings'1986 4,594,385'Coating agents of polyurethane dispersions and the use thereof for top coats and finishes'1986 4,594,374'Process for the production of aqueous dispersions and use thereof for the production of metal effect lacquer coatings'1986 4,543,144'Aqueous polyurethane compositions containing crosslinking agents and their use for heat-active one-coat reverse coating'1985 4,507,427'Process for production of polyisocyanates containing at least partly blocked isocyanate groups, compounds obtainable by this process and their use in production of polyurethanes, stoving lacquers or aqueous polyisocyanate solutions or dispersions'1985 4,481,345'Process for the production of combinations of organic polyisocyanates and at least partly blocked polyamines, the combinations obtainable by this process and their use for the production of lacquers, coating or sealing compositions'1984 4,452,834'Process for the preparation of aqueous dispersions or solutions of polyurethane polyureas containing heat activated cross-linking agents, the dispersions or solutions obtainable by this process, and their use for the production of coatings'1984 4,373,081'Coating compositions and process for the production of polyurethane coatings'1983 4,303,774'Polyurethanes which are dispersible or soluble in water and a process for their preparation'1981 4,269,748'Process for the preparation of aqueous polyurethane dispersions and solutions'1981 4,237,264'Process for the preparation of polyurethanes which are dispersible in water'1980 4,192,937'Process for the preparation of isocyanate polyaddition products which have hydroxyl groups in side chains'1980 4,172,191'Process for the preparation of polyisocyanates addition products containing carboxylate groups'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1999Patents assigned to BAYER AG (44)· patent assignee history

1979–1989Based in Bergisch Gladbach, DE· patent location history

1983–1989Based in Cologne, DE· patent location history

1988–1997Based in Duesseldorf, DE· patent location history

1991–1999Based in Dusseldorf, DE· patent location history

2003–2014Based in Walsrode, DE· patent location history

2012–2014Patents assigned to DOW GLOBAL TECHNOLOGIES LLC (3)· patent assignee history

2012–2014Patents assigned to NACHTKAMP KLAUS (3)· patent assignee history

2012–2014Patents assigned to FISCHER STEFFEN (2)· patent assignee history

2012–2014Patents assigned to HETTRICH KAY (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BAYER AG	44	1979–1999
DOW GLOBAL TECHNOLOGIES LLC	3	2012–2014
NACHTKAMP KLAUSself	3	2012–2014
FISCHER STEFFEN	2	2012–2014
HETTRICH KAY	2	2012–2014

Locations

Location	Patents	Span
Dusseldorf, DE	15	1991–1999
Cologne, DE	11	1983–1989
Duesseldorf, DE	10	1988–1997
Bergisch Gladbach, DE	6	1979–1989
Walsrode, DE	5	2003–2014