Inventor · disambiguated record
Norbert Weferling
Also filed as: WEFERLING NORBERT
36 granted patents·2 pending applications·776 citations·filing 1983–2012
98Inventor score
Top patents by PatentIndex Score
38 records- 0198US7446140B2Dialkylphosphinic salts, their use, and a process for their preparationCLARIANT PRODUKTE DEUTSCHLAND·Filed 2005·Granted Nov 4, 2008·43 cites·57 claims
- 0297US7420007B2Dialkylphosphinic saltsCLARIANT PRODUKTE DEUTSCHLAND·Filed 2004·Granted Sep 2, 2008·73 cites·42 claims
- 0397US6355832B1Processing for preparing salts of dialkylphosphinic acidsCLARIANT GMBH·Filed 2000·Granted Mar 12, 2002·85 cites·19 claims
- 0496US6569974B1Polymeric phosphinic acids and salts thereofCLARIANT GMBH·Filed 2000·Granted May 27, 2003·56 cites·21 claims
- 0595US6727335B2Polymeric phosphinic acids and salts thereofCLARIANT GMBH·Filed 2003·Granted Apr 27, 2004·43 cites·24 claims
- 0693US6359171B1Process for preparing dialkylphosphinic acids and their saltsCLARIANT GMBH·Filed 2000·Granted Mar 19, 2002·41 cites·41 claims
- 0793US6329544B1Process for preparing dialkylphosphinic acidsCLARIANT GMBH·Filed 2000·Granted Dec 11, 2001·30 cites·15 claims
- 0893US6278012B1Process for preparing phosphinate estersCLARIANT GMBH·Filed 2000·Granted Aug 21, 2001·38 cites·37 claims
- 0990US6534673B1Process for preparing salts of dialkylphosphinic acidsCLARIANT GMBH·Filed 1998·Granted Mar 18, 2003·47 cites·21 claims
- 1090US6090968AProcess for preparing phosphinic estersCLARIANT GMBH·Filed 1999·Granted Jul 18, 2000·58 cites·27 claims
- 1189US7348396B2Modified polyethylenephosphinic acids and their saltsCLARIANT PRODUKTE DEUTSCHLAND·Filed 2006·Granted Mar 25, 2008·6 cites·39 claims
- 1288US5166452AProcess for inhibiting and destroying peroxides in dialkyl ethersHOECHST AG·Filed 1991·Granted Nov 24, 1992·30 cites·3 claims
- 1387US6583315B2Process for preparing ethanebis(alkylphosphinic) acidsCLARIANT GMBH·Filed 2001·Granted Jun 24, 2003·19 cites·27 claims
- 1487US6300516B1Process for preparing dialkylphosphinic acidsCLARIANT GMBH·Filed 1998·Granted Oct 9, 2001·33 cites·11 claims
- 1582US7635785B2Process for preparation of dialkylphosphinic saltsCLARIANT PRODUKTE DEUTSCHLAND·Filed 2004·Granted Dec 22, 2009·13 cites·69 claims
- 1680US5973194AProcess for preparing dialkylphosphinate saltsCLARIANT GMBH·Filed 1998·Granted Oct 26, 1999·24 cites·22 claims
- 1776US6420598B1Process for preparing alkylphosphonic acidsCLARIANT GMBH·Filed 2000·Granted Jul 16, 2002·8 cites·18 claims
- 1876US5925785ASecondary and tertiary phosphines and processes for their preparationCELANESE GMBH·Filed 1997·Granted Jul 20, 1999·24 cites·9 claims
- 1975US7129320B2Modified polyethylenephosphinic acids and their saltsCLARIANT GMBH·Filed 2004·Granted Oct 31, 2006·8 cites·14 claims
- 2075US6770779B1Process for preparing alkylphosphonite estersCLARIANT GMBH·Filed 2000·Granted Aug 3, 2004·8 cites·22 claims
- 2174US6815558B1Process for preparing (metal) alkylphosphonites IICLARIANT GMBH·Filed 2000·Granted Nov 9, 2004·7 cites·13 claims
- 2271US4536350AProcess for making chlorophosphanes, phosphinic acid chlorides or thiophosphinic acid chloride, and novel isomeric mixture consisting of chloro-phosphabicyclononanesHOECHST AG·Filed 1983·Granted Aug 20, 1985·8 cites·7 claims
- 2370US4752648AProcess for making chlorophosphines and thiophosphinic acid chlorides, and 9-chloro-9-thioxo-9-phosphabicyclononanesWEFERLING NORBERT·Filed 1986·Granted Jun 21, 1988·12 cites·8 claims
- 2468US6011172AProcess for alkylating elemental phosphorusCLARIANT GMBH·Filed 1998·Granted Jan 4, 2000·13 cites·13 claims
- 2567US6090967AProcess for preparing phosphonous estersCLARIANT GMBH·Filed 1999·Granted Jul 18, 2000·12 cites·16 claims
- 2663US6806383B1Process for preparing (metal) alkylphosphonites ICLARIANT GMBH·Filed 2000·Granted Oct 19, 2004·3 cites·12 claims
- 2760US5002914AProcess for purifying and recovering the contaminated catalyst solution arising in the carbonylation of methanol and/or methyl acetate and/or dimethyl etherHOECHST AG·Filed 1990·Granted Mar 26, 1991·7 cites·4 claims
- 2855US6232493B1Process for preparing metal salts of arylalkylphosphinic acidsCLARIANT GMBH·Filed 1998·Granted May 15, 2001·6 cites·9 claims
- 2953US6242642B1Process for preparing arylalphosphinic acidsCLARIANT GMBH·Filed 1998·Granted Jun 5, 2001·5 cites·8 claims
- 3051US5268479AProcess for the preparation of tertiary phosphinesHOECHST AG·Filed 1992·Granted Dec 7, 1993·6 cites·6 claims
- 3149US5003108AProcess for the preparation of phosphanesHOECHST AG·Filed 1989·Granted Mar 26, 1991·4 cites·10 claims
- 3249US2006287418A1Nanoparticulate phosphorus-containing flame retardant systemCLARIANT GMBH·Filed 2005·Application pending·0 cites
- 3348US4757156AProcess for making tertiary alkylphosphinesHOECHST AG·Filed 1987·Granted Jul 12, 1988·4 cites·9 claims
- 3445US2014076866A1Method and device for joining components by means of energy beam weldingGRAMSCH MARIO·Filed 2012·Application pending·0 cites
- 3538US5591888AProcess for producing tert.-butyl chloroacetateHOECHST AG·Filed 1995·Granted Jan 7, 1997·2 cites·3 claims
- 3633US4885393ANovel s-butyl-di-n-alkyl phosphines, phosphine oxides and phosphine sulfides, and processes for making themHOECHST AG·Filed 1989·Granted Dec 5, 1989·0 cites·7 claims
- 3731US4781867AProcess for making phosphinic or phosphonic acid chloridesHOECHST AG·Filed 1987·Granted Nov 1, 1988·0 cites·5 claims
- 3829US4885394AProcess for the preparation of tertiary phosphine oxidesHOECHST AG·Filed 1988·Granted Dec 5, 1989·0 cites·4 claims
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