Inventor

Bernhard Beitzke

Inventor

Rosrath, DE

Overview

1986–1999

Patent span

Chemistry

Primary field (CPC C)

Patents· 11 as inventor

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

C07Cprimary

C07CAcyclic or carbocyclic compounds69%

C07DHeterocyclic compounds31%

PatentTitleYear

6,002,041'Process for preparing di-C.sub.1 - C.sub.4 -alkyl 5-nitro-isophthalates'1999 5,922,874'Process for preparing N-aryl-N\'-alkyl-piperazines'1999 5,859,298'Process for the preparation of 2-halogeno-4,5-difluorobenzoyl fluorides'1999 5,672,708'Process for the preparation of N-arylaminoacrylic acid derivatives and the use of N-arylaminoacrylic acid derivatives thus prepared for the preparation of 4-quinolone-3-carboxylic acid derivatives'1997 5,536,879'Process for preparing optically active amino alcohols'1996 5,401,869'Process for the preparation of aminomethylene compounds'1995 5,399,773'Process for the preparation of nitrophenyl alkyl ethers'1995 4,760,209'Process for preparing 3,5-dichloro-.alpha.-methylstyrene'1988 4,668,788'5,5-dichloro-4,5-dihydro-6-hydroxy-2-trichloromethylpyrimidin-4-one'1987 4,618,698'Process for the preparation of a mixture of an optionally substituted cinnamic acid ester and an optionally substituted .beta.-alkoxy-.beta.-phenyl-propionic acid ester, and a process for the preparation of optionally substituted cinnamic acid'1986 4,613,692'Process for the preparation of cinnamic acids which are optionally substituted in the nucleus'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–1999Patents assigned to BAYER AG (10)· patent assignee history

1986–1988Based in Bergisch Gladbach, DE· patent location history

1995–1999Based in Rosrath, DE· patent location history

1999Patents assigned to BAYER ATKIENGESELLSCHAFT (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BAYER AG	10	1986–1999
BAYER ATKIENGESELLSCHAFT	1	1999

Locations

Location	Patents	Span
Rosrath, DE	7	1995–1999
Bergisch Gladbach, DE	4	1986–1988