Inventor

Hans-Jurgen Weyer

Inventor

Bobenheim-Roxheim, DE

Overview

17→

Patents

1981–2003

Patent span

Chemistry

Primary field (CPC C)

Patents· 17 as inventor

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

C07Cprimary

C07CAcyclic or carbocyclic compounds33%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry10%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds10%

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments10%

D06PDyeing or printing textiles10%

C07BGeneral methods of organic chemistry7%

C07DHeterocyclic compounds7%

B01DSeparation3%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium3%

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

PatentTitleYear

6,554,966'Process for preparing essentially formic acid-free N-alkyl-N-methylalkyleneureas'2003 6,291,731'Continuous method for producing propargyl chloride'2001 6,262,300'Method for producing chlorocarboxylic acid chlorides'2001 6,245,954'Method of producing alkyl chloride, alkenyl chloride and alkinyl chloride'2001 6,242,639'Preparation of neopentyl glycol hydroxyprivalate granules'2001 6,162,939'Method for producing thiochloroformates'2000 6,153,784'Removal of halides from halide-containing nitrile mixtures'2000 5,965,032'Purification of .alpha.-, .beta.- or .gamma.-substituted carboxylic acids'1999 5,951,829'Separation of heteropoly compounds from polyethers, polyesters and polyether esters'1999 5,904,814'Removal of water and ammonia from benzophenone imine reactor effluents'1999 5,824,769'Polyether, polyester and polyether ester purification process'1998 5,770,747'Preparation of 1,2-butylene oxide'1998 5,741,888'Removal of heteropoly compounds from polyethers, polyesters and polyether esters'1998 4,431,585'Water-insoluble azo dyestuffs, processes for their manufacture and their use for dyeing and printing synthetic hydrophobic fiber material'1984 4,349,348'Process for printing synthetic, hydrophobic fiber material'1982 4,265,629'Process for the production of resist effects on polyester/cellulose mixed fiber textiles'1981 4,252,530'Process for dyeing and printing synthetic hydrophobic fiber material'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1984Patents assigned to CASSELLA FARBWERKE MAINKUR AG (3)· patent assignee history

1981Patents assigned to CASSELLA AG (1)· patent assignee history

1981–1984Based in Frankfurt am Main, DE· patent location history

1998–2003Patents assigned to BASF AG (13)· patent assignee history

1998–2003Based in Bobenheim-Roxheim, DE· patent location history

2001Based in Roxheim, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BASF AG	13	1998–2003
CASSELLA FARBWERKE MAINKUR AG	3	1981–1984
CASSELLA AG	1	1981

Locations

Location	Patents	Span
Bobenheim-Roxheim, DE	12	1998–2003
Frankfurt am Main, DE	4	1981–1984
Roxheim, DE	1	2001