Inventor · disambiguated record
Christoph Frey
Also filed as: FREY CHRISTOPH · ZOGRAPHOS GEORGIOS
12 granted patents·2 pending applications·56 citations·filing 1975–2023
89Inventor score
Files withCIBA GEIGY CORP7SILTRONIC AG3ECOGRAF LTD2WACKER CHEMIE GMBH1WACKER SILTRONIC HALBLEITERMAT1
Top patents by PatentIndex Score
14 records- 0182US11702342B2Method of producing purified graphiteECOGRAF LTD·Filed 2021·Granted Jul 18, 2023·1 cites·21 claims
- 0280US6946030B2Method for the production of a silica glass crucible with crystalline regions from a porous silica glass green bodyWACKER CHEMIE GMBH·Filed 2002·Granted Sep 20, 2005·12 cites·20 claims
- 0373US6843848B2Semiconductor wafer made from silicon and method for producing the semiconductor waferSILTRONIC AG·Filed 2001·Granted Jan 18, 2005·13 cites·4 claims
- 0471US2023303397A1Method of producing purified graphiteECOGRAF LTD·Filed 2023·Application pending·0 cites
- 0569US4065462AIminoisoindolinone metal complexCIBA GEIGY CORP·Filed 1975·Granted Dec 27, 1977·7 cites·8 claims
- 0666US4165319AIsoindoline pigmentsCIBA GEIGY CORP·Filed 1977·Granted Aug 21, 1979·6 cites·7 claims
- 0763US7202146B2Process for producing doped semiconductor wafers from silicon, and the wafers produced therebySILTRONIC AG·Filed 2005·Granted Apr 10, 2007·3 cites·13 claims
- 0859US4097484AMixed complexes of methine dyesCIBA GEIGY CORP·Filed 1975·Granted Jun 27, 1978·6 cites·7 claims
- 0951US6350314B1Process for producing nitrogen-doped semiconductor wafersWACKER SILTRONIC HALBLEITERMAT·Filed 2000·Granted Feb 26, 2002·2 cites·12 claims
- 1042US4002635AIsoindolinone compounds useful in preparing heavy metal containing pigmentsCIBA GEIGY CORP·Filed 1975·Granted Jan 11, 1977·2 cites·1 claims
- 1140US2006138539A1Process for treating a semiconductor wafer with a gaseous medium, and semiconductor wafer treated by this processSILTRONIC AG·Filed 2005·Application pending·0 cites
- 1236US4191566AElectrophotographic imaging process using anthraquinoid black pigments or metal complexesCIBA GEIGY CORP·Filed 1978·Granted Mar 4, 1980·3 cites·4 claims
- 1332US4529804ANaphthostyril Ni or Cu complexes, a process for their preparation, and high molecular weight organic material pigmented with these metal complexesCIBA GEIGY CORP·Filed 1983·Granted Jul 16, 1985·1 cites·11 claims
- 1431US3994899AMetal complex pigmentsCIBA GEIGY CORP·Filed 1975·Granted Nov 30, 1976·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →