P

Inventor

FREY CHRISTOPH

CH12 patents
⚠️ This page may combine multiple inventors who share the name “FREY CHRISTOPH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CIBA GEIGY CORP

7 patents
US4065462ADec 27, 1977

Iminoisoindolinone metal complex

CIBA GEIGY CORP7 citations73
US4165319AAug 21, 1979

Isoindoline pigments

CIBA GEIGY CORP6 citations62
US4002635AJan 11, 1977

Isoindolinone compounds useful in preparing heavy metal containing pigments

CIBA GEIGY CORP2 citations61
US4097484AJun 27, 1978

Mixed complexes of methine dyes

CIBA GEIGY CORP6 citations56
US4191566AMar 4, 1980

Electrophotographic imaging process using anthraquinoid black pigments or metal complexes

CIBA GEIGY CORP3 citations55
US3994899ANov 30, 1976

Metal complex pigments

CIBA GEIGY CORP0 citations51
US4529804AJul 16, 1985

Naphthostyril Ni or Cu complexes, a process for their preparation, and high molecular weight organic material pigmented with these metal complexes

CIBA GEIGY CORP1 citations48

SILTRONIC AG

2 patents
US6843848B2Jan 18, 2005

Semiconductor wafer made from silicon and method for producing the semiconductor wafer

SILTRONIC AG13 citations82
US7202146B2Apr 10, 2007

Process for producing doped semiconductor wafers from silicon, and the wafers produced thereby

SILTRONIC AG3 citations56

WACKER CHEMIE GMBH

1 patent
US6946030B2Sep 20, 2005

Method for the production of a silica glass crucible with crystalline regions from a porous silica glass green body

WACKER CHEMIE GMBH12 citations81

WACKER SILTRONIC HALBLEITERMAT

1 patent
US6350314B1Feb 26, 2002

Process for producing nitrogen-doped semiconductor wafers

WACKER SILTRONIC HALBLEITERMAT2 citations59

ECOGRAF LTD

1 patent
US11702342B2Jul 18, 2023

Method of producing purified graphite

ECOGRAF LTD1 citations54