Inventor

Martin Petrzilka

Inventor

Kaiseraugst, CH

Overview

30→

Patents

1980–1997

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.

C09Kprimary

C09KMaterials for miscellaneous applications, not provided for elsewhere34%

C07CAcyclic or carbocyclic compounds32%

C07DHeterocyclic compounds16%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium6%

C07BGeneral methods of organic chemistry4%

C11BProducing, e.g. by pressing raw materials or by extraction from waste materials, refining or preserving fats, fatty substances, e.g. lanolin, fatty oils or waxes4%

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments1%

G02BOptical elements, systems or apparatus1%

PatentTitleYear

5,635,471'Odorants'1997 5,510,325'Essential oil'1996 5,238,602'Liquid crystals'1993 5,118,504'Hypoallergenic moss oils and methods for preparing same'1992 5,013,478'Liquid crystals'1991 4,980,486'Liquid crystalline compounds and mixtures'1990 4,915,480'Liquid crystalline compounds and mixtures'1990 4,783,280'Liquid crystal mixture'1988 4,708,441'Esters'1987 4,709,030'Novel liquid crystal mixtures'1987 4,704,005'Dicyano compounds'1987 4,676,604'Liquid crystals'1987 4,652,089'Liquid crystalline compounds and mixtures'1987 4,630,896'Benzonitriles'1986 4,629,581'Cyclohexanecarbonitriles'1986 4,621,901'Novel liquid crystal mixtures'1986 4,613,208'Coloring substance-containing liquid crystal mixtures'1986 4,595,521'Pyridazine derivatives useful as components of liquid crystal mixtures'1986 4,583,826'Phenylethanes'1986 4,565,425'Liquid crystals'1986 4,559,147'Optical immersion oil'1985 4,550,981'Liquid crystalline esters and mixtures'1985 4,528,114'Acetylenes'1985 4,526,704'Multiring liquid crystal esters'1985 4,493,533'Immersion oil containing aliphatic thio compounds'1985 4,460,770'Liquid crystal mixture'1984 4,432,885'Decalins'1984 4,419,262'Pyridazines'1983 4,247,717'Organo-selenenyl compound and method for its preparation'1981 4,234,741'Process for the preparation of .gamma., .delta.-unsaturated esters and acids'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1981Patents assigned to FIRMENICH & CIE (2)· patent assignee history

1980–1981Based in Puplinge, CH· patent location history

1983–1993Patents assigned to HOFFMANN LA ROCHE (24)· patent assignee history

1983–1993Based in Kaiseraugst, CH· patent location history

1990Patents assigned to PETRZILKA MARTIN (1)· patent assignee history

1992–1997Patents assigned to GIVAUDAN ROURE INT (2)· patent assignee history

1992Based in Grasse, FR· patent location history

1996Patents assigned to GIVAUDAN ROURE CORP (1)· patent assignee history

1996–1997Based in Wetzikon, CH· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HOFFMANN LA ROCHE	24	1983–1993
FIRMENICH & CIE	2	1980–1981
GIVAUDAN ROURE INT	2	1992–1997
GIVAUDAN ROURE CORP	1	1996
PETRZILKA MARTINself	1	1990

Locations

Location	Patents	Span
Kaiseraugst, CH	25	1983–1993
Wetzikon, CH	2	1996–1997
Puplinge, CH	2	1980–1981
Grasse, FR	1	1992