P

Inventor

TANG DAVID Y

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

OCCIDENTAL CHEM CO

30 patents
US5935372AAug 10, 1999

Adhesive sealant for bonding metal parts to ceramics

OCCIDENTAL CHEM CO34 citations86
US4517372AMay 14, 1985

Process for the preparation of 4-fluorophthalic anhydride

OCCIDENTAL CHEM CO11 citations74
US4808760AFeb 28, 1989

Telomers prepared from chlorotrifluoroethylene and 1,2-dibromo-2-chlorotrifluoroethane

OCCIDENTAL CHEM CO6 citations73
US4801763AJan 31, 1989

Selective chlorination of chlorotrifluoroethylene telomers

OCCIDENTAL CHEM CO10 citations73
US4590315AMay 20, 1986

Process for the preparation of halo aromatic compounds

OCCIDENTAL CHEM CO16 citations73
US4500471AFeb 19, 1985

Preparation of trifluoromethyl-benzoyl halides

OCCIDENTAL CHEM CO9 citations73
US5874606AFeb 23, 1999

Process for making o-arylbenzonitriles

OCCIDENTAL CHEM CO11 citations72
US5866709AFeb 2, 1999

Process for making aromatic nitriles

OCCIDENTAL CHEM CO8 citations72
US5317049AMay 31, 1994

Polyimidesiloxane solution and method of coating substrates

OCCIDENTAL CHEM CO12 citations72
US5233054AAug 3, 1993

Process for the preparation of halophthalic anhydrides

OCCIDENTAL CHEM CO12 citations72
US5049682ASep 17, 1991

Process for the preparation of halophthalic anhydrides

OCCIDENTAL CHEM CO18 citations72
US4470930ASep 11, 1984

Preparation of nuclear chlorinated aromatic compounds

OCCIDENTAL CHEM CO11 citations72
US4469893ASep 4, 1984

Method for the preparation of nitrodiphenyl ethers

OCCIDENTAL CHEM CO10 citations72
US5998670ADec 7, 1999

Method of making high purity substituted diphenyldisulfides

OCCIDENTAL CHEM CO7 citations70
US4582948AApr 15, 1986

3-chloro-4-fluoro-5-nitrobenzotrifluoride

OCCIDENTAL CHEM CO16 citations70
US5206391AApr 27, 1993

Process for the preparation of halophthalic anhydrides

OCCIDENTAL CHEM CO15 citations69
US5177181AJan 5, 1993

Diamines and photosensitive polyimides made therefrom

OCCIDENTAL CHEM CO18 citations69
US4424396AJan 3, 1984

Process for the preparation substituted anilino acids

OCCIDENTAL CHEM CO11 citations69
US4367348AJan 4, 1983

Novel trifluoromethyl benzal chlorides and process for the preparation thereof

OCCIDENTAL CHEM CO7 citations69
US4792618ADec 20, 1988

Fluorinated carbocylic compounds

OCCIDENTAL CHEM CO16 citations67
US4952719AAug 28, 1990

Process for the preparation of halo aromatic compounds

OCCIDENTAL CHEM CO3 citations62
US4581179AApr 8, 1986

Process for the preparation of trifluoromethylbenzoyl chlorides and bromides from trifluoromethylbenzoyl fluorides

OCCIDENTAL CHEM CO2 citations62
US6153810ANov 28, 2000

Highly selective process for making o-arylbenzonitriles

OCCIDENTAL CHEM CO3 citations61
US4603222AJul 29, 1986

Method for the preparation of nitrodiphenyl ethers

OCCIDENTAL CHEM CO2 citations61
US4488953ADec 18, 1984

Purification of recycled paraffins in photochlorination process

OCCIDENTAL CHEM CO2 citations60
US4704483ANov 3, 1987

3,4-difluoro-5-nitrobenzotrifluoride and preparation of fluoro-nitro-benzotrifluorides

OCCIDENTAL CHEM CO4 citations59
US6130361AOct 10, 2000

Reducing meta content of isomeric mixtures of halo substituted toluenes

OCCIDENTAL CHEM CO3 citations56
US4968830ANov 6, 1990

Aromatization process

OCCIDENTAL CHEM CO1 citations52
US6284934B1Sep 4, 2001

Reducing meta content of isomeric mixtures of halo substituted alkylbenzenes

OCCIDENTAL CHEM CO0 citations47
US6156945ADec 5, 2000

Method of making high purity 2,4- and 3,4-dichlorotoluene

OCCIDENTAL CHEM CO1 citations46

HOOKER CHEMICALS PLASTICS CORP

8 patents