Inventor · disambiguated record
Hans-Helmut Friedrich
Also filed as: FRIEDRICH HANS-HELMUT
48 granted patents·6 pending applications·695 citations·filing 1974–2009
98Inventor score
Files withCIBA GEIGY CORP32WITCO VINYL ADDITIVES GMBH7CHEMTURA VINYL ADDITIVES GMBH3CIBA SC HOLDING AG3WEHNER WOLFGANG2
Top patents by PatentIndex Score
54 records- 0195US5002698ASulfur- and nitrogen-containing lubricant additivesCIBA GEIGY CORP·Filed 1989·Granted Mar 26, 1991·78 cites·6 claims
- 0291US5925696AStabilizer combinations for chlorine-containing polymersCIBA SPECIALITY CHEMICALS CORP·Filed 1996·Granted Jul 20, 1999·54 cites·12 claims
- 0390US6194494B1Stabiliser combinations for chlorine-containing polymersWITCO VINYL ADDITIVES GMBH·Filed 1998·Granted Feb 27, 2001·51 cites·12 claims
- 0490US4404408AComplexed compounds, processes for their manufacture and their useCIBA GEIGY CORP·Filed 1977·Granted Sep 13, 1983·36 cites·6 claims
- 0589US5344992AProcess for the preparation of linear 1,3-diketonesCIBA GEIGY CORP·Filed 1993·Granted Sep 6, 1994·42 cites·9 claims
- 0688US4425278AComplex compounds, process for their preparation, and their useCIBA GEIGY CORP·Filed 1981·Granted Jan 10, 1984·55 cites·8 claims
- 0784US4290940APyrrole stabilizers for chlorine-containing thermoplasticsCIBA GEIGY CORP·Filed 1980·Granted Sep 22, 1981·14 cites·13 claims
- 0882US7393887B2Stabilizer system for stabilizing halogen-containing polymersCROMPTON CORP·Filed 2006·Granted Jul 1, 2008·5 cites·20 claims
- 0978US4369276APyrrole stabilizers for chlorine-containing thermoplasticsCIBA GEIGY CORP·Filed 1981·Granted Jan 18, 1983·10 cites·6 claims
- 1076US5071898APropane-1,3-dione derivatives and their use as stabilizers for polymers containing chlorineCIBA GEIGY CORP·Filed 1989·Granted Dec 10, 1991·12 cites·14 claims
- 1176US4336148AComplex compound, process for their preparation, and their useCIBA GEIGY CORP·Filed 1978·Granted Jun 22, 1982·24 cites·6 claims
- 1275US5859100ARigid PVC stabilised with N,N-dimethyl-6-aminouracilsCIBA SC HOLDING AG·Filed 1997·Granted Jan 12, 1999·32 cites·10 claims
- 1374US6174941B1NH2-modified 6-aminouracils as stabilizers for halogenated polymersWITCO VINYL ADDITIVES GMBH·Filed 1999·Granted Jan 16, 2001·25 cites·24 claims
- 1473US4886610ALubricant compositions, novel glucamine derivatives and complex compounds containing sameCIBA GEIGY CORP·Filed 1988·Granted Dec 12, 1989·8 cites·14 claims
- 1572US6232375B14-aminopyrimidinones and oxazolidino-4-aminopyrimidinones, process for their preparation and their use for stabilizing halogen-containing polymersWITCO VINYL ADDITIVES GMBH·Filed 2000·Granted May 15, 2001·8 cites·20 claims
- 1671US7671118B2Stabilizer system for stabilizing halogen-containing polymersCHEMTURA VINYL ADDITIVES GMBH·Filed 2006·Granted Mar 2, 2010·1 cites·12 claims
- 1771US7077981B2Chlorate-containing stabilizer system with nitrogen-containing synergists for stabilizing halogen-containing polymersCROMPTON VINYL ADDITIVES GMBH·Filed 2001·Granted Jul 18, 2006·7 cites·10 claims
- 1871US6156830A5-substituted 6-aminouracils as stabilizers for halogenated polymersWITCO VINYL ADDITIVES GMBH·Filed 1999·Granted Dec 5, 2000·23 cites·22 claims
- 1970US7358286B2Stabilizer system for stabilizing PVCCHEMTURA VINYL ADDITIVES GMBH·Filed 2003·Granted Apr 15, 2008·10 cites·26 claims
- 2070US3988378AReaction product of mercaptans, alkylene oxides and glycidolCIBA GEIGY CORP·Filed 1975·Granted Oct 26, 1976·8 cites·10 claims
- 2165US5550276APhosphonic acid derivatives and thionophosphonic acid derivativesCIBA GEIGY CORP·Filed 1995·Granted Aug 27, 1996·13 cites·10 claims
- 2265US2009170988A1Stabilizing system for halogenous polymersCROMPTON VINYL ADDITIVESGMBH·Filed 2009·Application pending·0 cites
- 2364US5770643APyrrolodiazine derivatives as stabilizers for chlorine-containing polymersCIBA SC HOLDING AG·Filed 1996·Granted Jun 23, 1998·10 cites·14 claims
- 2463US4992504AEther-containing or thioether-containing 1,3-diketones and the use thereof as stabilizers for chlorine-containing polymersCIBA GEIGY CORP·Filed 1990·Granted Feb 12, 1991·12 cites·14 claims
- 2562US6211270B1Cyanoacetylureas for stabilizing halogenated polymersWITCO VINYL ADDITIVES GMBH·Filed 1999·Granted Apr 3, 2001·15 cites·20 claims
- 2661US6274654B11,3-Disubstituted 6-aminouracils for stabilizing halogenated polymersWITCO VINYL ADDITIVES GMBH·Filed 1999·Granted Aug 14, 2001·15 cites·5 claims
- 2761US4732691ALubricant compositions, novel glucamine derivatives and complex compounds containing sameCIBA GEIGY CORP·Filed 1986·Granted Mar 22, 1988·10 cites·7 claims
- 2859US4245125ANovel adductsCIBA GEIGY CORP·Filed 1979·Granted Jan 13, 1981·4 cites·4 claims
- 2958US7612133B2Prestabilization of halogen-containing polymersCHEMTURA VINYL ADDITIVES GMBH·Filed 2007·Granted Nov 3, 2009·0 cites·11 claims
- 3058US4931576AProcess for producing glycidyl thioethersCIBA GEIGY CORP·Filed 1988·Granted Jun 5, 1990·13 cites·7 claims
- 3157US3936422AAnti-static modified thermoplasticsCIBA GEIGY CORP·Filed 1975·Granted Feb 3, 1976·10 cites·16 claims
- 3256US5618778AAdditives for lubricantsCIBA GEIGY CORP·Filed 1995·Granted Apr 8, 1997·13 cites·6 claims
- 3354US3931262AHydrophilic and difficultly volatile biocidal triorganotin compoundsCIBA GEIGY CORP·Filed 1974·Granted Jan 6, 1976·3 cites·34 claims
- 3452US2006270765A1Novel stabilizer system for halogenous polymersWEHNER WOLFGANG·Filed 2004·Application pending·0 cites
- 3551US4863621ASulfur-and nitrogen-containing lubricant additivesCIBA GEIGY CORP·Filed 1987·Granted Sep 5, 1989·9 cites·6 claims
- 3650US6002004APyrrolodiazine derivatives as stabilizers for chilorine-containing polymersWITCO VINYL ADDITIVES GMBH·Filed 1998·Granted Dec 14, 1999·4 cites·4 claims
- 3750US3933877AHydrophilic and difficultly volatile biocidal triorganometallic compoundsCIBA GEIGY CORP·Filed 1974·Granted Jan 20, 1976·2 cites·8 claims
- 3849US5892051AAdditives for lubricantsCIBA SC HOLDING AG·Filed 1996·Granted Apr 6, 1999·9 cites·4 claims
- 3949US5288776ASubstituted pyrroles as stabilisers for chlorinated polymersCIBA GEIGY CORP·Filed 1991·Granted Feb 22, 1994·7 cites·13 claims
- 4047US2004259988A1Prestabilization of halogen-containing polymersFiled 2002·Application pending·0 cites
- 4147US2006148941A1Monosubstituted 6-aminouracils for the stabilization of halogenated polymersWEHNER WOFGANG·Filed 2003·Application pending·0 cites
- 4246US4830770AHydraulic fluid compositions, novel glucamine derivatives and complex compounds containing sameCIBA GEIGY CORP·Filed 1987·Granted May 16, 1989·5 cites·7 claims
- 4346US4808755ALubricant compositions, novel glucamine derivatives and complex compounds containing sameCIBA GEIGY CORP·Filed 1987·Granted Feb 28, 1989·3 cites·4 claims
- 4445US4369277APyrrole-stabilized chlorine-containing thermoplasticsCIBA GEIGY CORP·Filed 1981·Granted Jan 18, 1983·6 cites·9 claims
- 4544US4689162ABoron-containing compoundsCIBA GEIGY CORP·Filed 1985·Granted Aug 25, 1987·7 cites·7 claims
- 4644US2006235124A1Stabilizer system for the stabilisation of halogenated polymersWEHNER WOLFGANG·Filed 2004·Application pending·0 cites
- 4743US4835310AReaction products of bisglycidyl thioethersCIBA GEIGY CORP·Filed 1987·Granted May 30, 1989·7 cites·14 claims
- 4843US4385147AStabilization of chlorine-containing thermoplastics with m-aminophenol derivativesCIBA GEIGY CORP·Filed 1981·Granted May 24, 1983·5 cites·11 claims
- 4943US2004054043A1Stabilizer system for stabilizing polymers that contain halogenFiled 2001·Application pending·0 cites
- 5042US5322964AProcess for the preparation of alpha-aminoketone saltsCIBA GEIGY CORP·Filed 1993·Granted Jun 21, 1994·2 cites·13 claims
Showing the top 50 of 54 patent records by PatentIndex Score.
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