Inventor

Werner Fickert

Inventor

Mannheim, DE

Overview

1980–1990

Patent span

Chemistry

Primary field (CPC C)

Patents· 21 as inventor

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

C07Dprimary

C07DHeterocyclic compounds42%

A61KPreparations for medical, dental or toiletry purposes18%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations18%

C08HDerivatives of natural macromolecular compounds9%

A61QSpecific use of cosmetics or similar toiletry preparations6%

C07CAcyclic or carbocyclic compounds6%

PatentTitleYear

4,952,563'Waterfree application form of low molecular weight alkali huminates'1990 4,946,829'Process and huminate fraction'1990 4,921,840'Method for the preparation of low molecular weight alkali metal huminates'1990 4,918,059'Low molecular weight alkali metal huminates, method for their preparation and applications thereof'1990 4,719,298'Side chain chlorination process of heterocycles'1988 4,661,115'Hair dyeing agents'1987 4,659,830'Process for the production of zinc 2-mercaptopyridine N-oxide'1987 4,659,846'Preparation of 2,5-diloweralkyl-1.4:3,6-dianhydrosorbitols'1987 4,632,991'Process for production of zinc 2-mercaptopyridine-n-oxide'1986 4,582,910'Method for preparation of 4-halogenonaphthalic acid anhydrides'1986 4,567,272'Pyrrole containing 2-aminonitropyridine derivatives'1986 4,564,700'Process for the preparation of fluorene-9-carboxylic acid'1986 4,549,024'Oxidation of quinoline to quinolinic acid'1985 4,546,190'Method for producing 3,5,6-trichloro-1H-pyridine-2-on'1985 4,529,800'Novel process for the preparation of 2-halo-3-nitro-6-alkoxy-pyridines'1985 4,493,935'Preparation of 1H-pyrrol-2-acetic acid esters'1985 4,377,699'5-Chloro-indole preparation'1983 4,357,277'Novel process for the preparation of N,N\'-bisacyl hydrazides'1982 4,332,728'Process for the preparation of bisacyl hydrazines'1982 4,256,892'Preparation of bis-2-pyridyl-disulfides'1981 4,228,083'Process for the production of .beta.-(5-nitro-2-furyl)-acrolein'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1990Patents assigned to RUETGERSWERKE AG (21)· patent assignee history

1980–1990Based in Mannheim, DE· patent location history

1982Based in Mannheim-Seckenheim, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RUETGERSWERKE AG	21	1980–1990

Locations

Location	Patents	Span
Mannheim, DE	19	1980–1990
Mannheim-Seckenheim, DE	2	1982