Inventor · disambiguated record
Volker H. Von Ahn
Also filed as: VON AHN VOLKER H
19 granted patents·1,154 citations·filing 1992–1998
97Inventor score
Files withCIBA GEIGY CORP14CIBA SC HOLDING AG3CIBA SPECIALTY CHEMCIALS CORP1NALCO EXXON ENERGY CHEM LP1
Top patents by PatentIndex Score
19 records- 0199US5574166ACrystalline form of 2-(2-hydroxy-3-α-cumyl-5-tert-octylphenyl)-2H-benzotriazoleCIBA GEIGY CORP·Filed 1995·Granted Nov 12, 1996·95 cites·5 claims
- 0297US5607987A2-(2-hydroxy-3-α cumyl-5-tert nonyl or dodecyl phenyl)-2H- Benzotriazole UV AbsorbersCIBA GEIGY CORP·Filed 1996·Granted Mar 4, 1997·78 cites·1 claims
- 0396US5563242AElectro coat/base coat/clear coat finishes stabilized with soluble and thermally stable benzotriazole UV absorbersCIBA GEIGY CORP·Filed 1995·Granted Oct 8, 1996·76 cites·13 claims
- 0496US5554760A2-(2-hydroxy-3-α-cumyl-5-nonylor 5-dodecylphenyl)-2H-benzotriazoleCIBA GEIGY CORP·Filed 1995·Granted Sep 10, 1996·66 cites·2 claims
- 0596US5436349ACompositions stabilized with 5-sulfonyl-substituted benotriazole UV-absorbersCIBA GEIGY CORP·Filed 1993·Granted Jul 25, 1995·82 cites·23 claims
- 0696US5280124A5-sulfonyl-substituted benzotriazole UV-absorbersCIBA GEIGY CORP·Filed 1992·Granted Jan 18, 1994·101 cites·4 claims
- 0796US5254760AInhibiting polymerization of vinyl aromatic monomersCIBA GEIGY CORP·Filed 1992·Granted Oct 19, 1993·106 cites·23 claims
- 0895US5583247A7-substituted quinone methides as inhibitors for unsaturated monomersCIBA GEIGY CORP·Filed 1995·Granted Dec 10, 1996·69 cites·11 claims
- 0995US5516914ACompositions stabilized with 5-thio-substituted benzotriazole UV-absorbersCIBA GEIGY CORP·Filed 1993·Granted May 14, 1996·84 cites·27 claims
- 1095US5278314A5-thio-substituted benzotriazole UV-absorbersCIBA GEIGY CORP·Filed 1992·Granted Jan 11, 1994·91 cites·4 claims
- 1193US5616774AInhibition of unsaturated monomers with 7-aryl quinone methidesCIBA GEIGY CORP·Filed 1995·Granted Apr 1, 1997·62 cites·26 claims
- 1292US5750765A7-substituted quinone methides as inhibitors for unsaturated monomersCIBA SC HOLDING AG·Filed 1996·Granted May 12, 1998·41 cites·1 claims
- 1392US5545782AMethod for inhibiting premature polymerization of vinyl aromatic monomersCIBA GEIGY CORP·Filed 1995·Granted Aug 13, 1996·43 cites·11 claims
- 1491US5670692A7-substituted quinone methides as inhibitors for unsaturated monomersCIBA GEIGY CORP·Filed 1996·Granted Sep 23, 1997·39 cites·8 claims
- 1588US5844025A1,2-Bis-adducts of stable nitroxides with substituted ethylenes and stabilized compositionsCIBA SC HOLDING AG·Filed 1996·Granted Dec 1, 1998·30 cites·4 claims
- 1685US5545786AMethod for inhibiting premature polymerization of vinyl aromatic monomersCIBA GEIGY CORP·Filed 1995·Granted Aug 13, 1996·41 cites·15 claims
- 1782US5942626AProcess for making 5-thio-substituted benzotriazole UV absorbersCIBA SC HOLDING AG·Filed 1996·Granted Aug 24, 1999·36 cites·13 claims
- 1872US6117276AInhibiting polymerization of vinyl aromatic monomersNALCO EXXON ENERGY CHEM LP·Filed 1998·Granted Sep 12, 2000·13 cites·7 claims
- 1940US6218536B11,2-bis-adducts of stable nitroxides with substituted ethylenes and stabilized compositionsCIBA SPECIALTY CHEMCIALS CORP·Filed 1998·Granted Apr 17, 2001·1 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →