Inventor
WEFERLING NORBERT
DE36 patents
⚠️ This page may combine multiple inventors who share the name “WEFERLING NORBERT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CLARIANT GMBH
20 patentsUS6355832B1Mar 12, 2002
Processing for preparing salts of dialkylphosphinic acids
CLARIANT GMBH85 citations97
US6569974B1May 27, 2003
Polymeric phosphinic acids and salts thereof
CLARIANT GMBH56 citations96
US6534673B1Mar 18, 2003
Process for preparing salts of dialkylphosphinic acids
CLARIANT GMBH47 citations95
US6090968AJul 18, 2000
Process for preparing phosphinic esters
CLARIANT GMBH58 citations95
US6727335B2Apr 27, 2004
Polymeric phosphinic acids and salts thereof
CLARIANT GMBH43 citations92
US6359171B1Mar 19, 2002
Process for preparing dialkylphosphinic acids and their salts
CLARIANT GMBH41 citations92
US6329544B1Dec 11, 2001
Process for preparing dialkylphosphinic acids
CLARIANT GMBH30 citations92
US6300516B1Oct 9, 2001
Process for preparing dialkylphosphinic acids
CLARIANT GMBH33 citations92
US6278012B1Aug 21, 2001
Process for preparing phosphinate esters
CLARIANT GMBH38 citations92
US5973194AOct 26, 1999
Process for preparing dialkylphosphinate salts
CLARIANT GMBH24 citations92
US6583315B2Jun 24, 2003
Process for preparing ethanebis(alkylphosphinic) acids
CLARIANT GMBH19 citations84
US7129320B2Oct 31, 2006
Modified polyethylenephosphinic acids and their salts
CLARIANT GMBH8 citations74
US6815558B1Nov 9, 2004
Process for preparing (metal) alkylphosphonites II
CLARIANT GMBH7 citations74
US6420598B1Jul 16, 2002
Process for preparing alkylphosphonic acids
CLARIANT GMBH8 citations74
US6770779B1Aug 3, 2004
Process for preparing alkylphosphonite esters
CLARIANT GMBH8 citations73
US6090967AJul 18, 2000
Process for preparing phosphonous esters
CLARIANT GMBH12 citations72
US6011172AJan 4, 2000
Process for alkylating elemental phosphorus
CLARIANT GMBH13 citations72
US6806383B1Oct 19, 2004
Process for preparing (metal) alkylphosphonites I
CLARIANT GMBH3 citations63
US6242642B1Jun 5, 2001
Process for preparing arylalphosphinic acids
CLARIANT GMBH5 citations63
US6232493B1May 15, 2001
Process for preparing metal salts of arylalkylphosphinic acids
CLARIANT GMBH6 citations63
HOECHST AG
10 patentsUS5166452ANov 24, 1992
Process for inhibiting and destroying peroxides in dialkyl ethers
HOECHST AG30 citations92
US4536350AAug 20, 1985
Process for making chlorophosphanes, phosphinic acid chlorides or thiophosphinic acid chloride, and novel isomeric mixture consisting of chloro-phosphabicyclononanes
HOECHST AG8 citations74
US5002914AMar 26, 1991
Process for purifying and recovering the contaminated catalyst solution arising in the carbonylation of methanol and/or methyl acetate and/or dimethyl ether
HOECHST AG7 citations73
US5591888AJan 7, 1997
Process for producing tert.-butyl chloroacetate
HOECHST AG2 citations58
US5268479ADec 7, 1993
Process for the preparation of tertiary phosphines
HOECHST AG6 citations58
US5003108AMar 26, 1991
Process for the preparation of phosphanes
HOECHST AG4 citations58
US4757156AJul 12, 1988
Process for making tertiary alkylphosphines
HOECHST AG4 citations57
US4885393ADec 5, 1989
Novel s-butyl-di-n-alkyl phosphines, phosphine oxides and phosphine sulfides, and processes for making them
HOECHST AG0 citations52
US4781867ANov 1, 1988
Process for making phosphinic or phosphonic acid chlorides
HOECHST AG0 citations52
US4885394ADec 5, 1989
Process for the preparation of tertiary phosphine oxides
HOECHST AG0 citations50
CLARIANT PRODUKTE DEUTSCHLAND
4 patentsUS7420007B2Sep 2, 2008
Dialkylphosphinic salts
CLARIANT PRODUKTE DEUTSCHLAND73 citations98
US7446140B2Nov 4, 2008
Dialkylphosphinic salts, their use, and a process for their preparation
CLARIANT PRODUKTE DEUTSCHLAND43 citations93
US7635785B2Dec 22, 2009
Process for preparation of dialkylphosphinic salts
CLARIANT PRODUKTE DEUTSCHLAND13 citations84
US7348396B2Mar 25, 2008
Modified polyethylenephosphinic acids and their salts
CLARIANT PRODUKTE DEUTSCHLAND6 citations74