Inventor

Klaus Kircher

Inventor

Leverkusen, DE

Overview

30→

Patents

1983–2005

Patent span

Chemistry

Primary field (CPC C)

Patents· 30 as inventor

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

C08Kprimary

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients32%

C08LCompositions of macromolecular compounds18%

C07DHeterocyclic compounds16%

C08JWorking-up14%

B29CShaping or joining of plastics5%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds4%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts2%

B29LIndexing scheme associated with subclass b29c, relating to particular articles2%

C07CAcyclic or carbocyclic compounds2%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium2%

PatentTitleYear

6,838,518'Extrudable polycarbonate molding compositions'2005 5,612,398'Radiation-resistant polycarbonates'1997 5,464,893'Radiation-resistant polycarbonates'1995 5,382,605'Polycondensates which can be sterilized by .gamma.-radiation'1995 5,376,715'Heat stabilization or aromatic polycarbonates'1994 5,356,965'Flame-resistant polycarbonate molding compositions'1994 5,308,558'Process for foaming thermoplastic polycarbonates'1994 5,234,982'Ternary mixtures'1993 5,202,374'Ternary mixtures'1993 5,158,985'Polycarbonate foam articles'1992 5,132,331'Polycarbonate foams'1992 5,036,151'Mold releasel agents for poly(ester) carbonates'1991 5,004,569'Process for the production of carboxylic acid esters'1991 4,797,435'Use of 3-benzalphthalides as UV stabilizers for thermoplastic, aromatic polyesters, polycarbonates and polyester carbonates'1989 4,776,981'Flameproofing agents, their preparation and their use for providing polycarbonates with a flame-resistant finish'1988 4,774,273'Perfluoroalkanesulphonic acid aryl esters as anti-drip agents in flame-repellant molding compositions based on thermoplastic aromaticpolycarbonates'1988 4,753,994'Flame retardant polycarbonate compositions'1988 4,728,673'Process for the foaming of thermoplastics containing ester and/or carbonate groups'1988 4,713,462'Flameproofing agents, their preparation and their use for providing polycarbonates with a flame-resistant finish'1987 4,661,543'Flameproofing agents, their preparation and their use for providing polycarbonates with a flame-resistant finish'1987 4,657,955'Flameproofing agents, their preparation and their use for flameproofing polycarbonates'1987 4,649,168'Process for the preparation of flame-resistant polycarbonate moulding compositions containing tetrafluoroethylene polymers'1987 4,627,949'Process for the preparation of shaped articles of stabilized polycarbonate by the devolatilizing injection-moulding or devolatilizing extrusion process'1986 4,615,832'Flameproofing agents, their preparation and their use for flameproofing polycarbonates'1986 4,594,375'Bis-(imide-sulfonate) flameproofing agents, their preparation and their use for flameproofing in polycarbonate'1986 4,567,210'Process for foaming thermoplastic aromatic polycarbonates'1986 4,552,911'Polycarbonate molding compositions having improved flame retardance'1985 4,521,542'Arylsulphonyl hydrazones as blowing agents'1985 4,456,717'Stabilizer compositions, their use for stabilizing thermoplastic, polycarbonates and stabilized thermoplastic polycarbonates'1984 4,372,898'Process of crosslinking electrical insulators of plastic or rubber'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983Patents assigned to TROESTER MASCHF PAUL (1)· patent assignee history

1983Based in Aachen-Richterich, DE· patent location history

1984–2005Patents assigned to BAYER AG (29)· patent assignee history

1984–1997Based in Leverkusen, DE· patent location history

1988Patents assigned to MOBAY CORP (1)· patent assignee history

1992–1995Patents assigned to MILES INC (3)· patent assignee history

2005Based in Hong Kong, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BAYER AG	29	1984–2005
MILES INC	3	1992–1995
MOBAY CORP	1	1988
TROESTER MASCHF PAUL	1	1983

Locations

Location	Patents	Span
Leverkusen, DE	28	1984–1997
Hong Kong, CN	1	2005
Aachen-Richterich, DE	1	1983