Inventor

GREENFIELD HAROLD

8 patents

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

UNIROYAL INC

5 patents

US4431841AFeb 14, 1984

Process for making diarylamines

UNIROYAL INC9 citations72

US4069240AJan 17, 1978

Nuclear hydrogenation of n-aryl carbamates

UNIROYAL INC8 citations72

US4018747AApr 19, 1977

Production of fiber-forming polyamides by transamidation of N-alicyclic diamides with dicarboxylic acids

UNIROYAL INC4 citations62

US4045484AAug 30, 1977

Process for preparing N'-methyl acethydrazide

UNIROYAL INC4 citations58

US3965174AJun 22, 1976

Process for preparing N,N-disubstituted acid hydrazides

UNIROYAL INC4 citations58

UNIROYAL CHEM CO INC

2 patents

US4605743AAug 12, 1986

Process for the production of 2,2,6,6-tetraalkyl-4-piperidylamines

UNIROYAL CHEM CO INC27 citations91

US4607104AAug 19, 1986

Process for the production of 2,2,6,6-tetraalkyl-4-piperidylamines

UNIROYAL CHEM CO INC14 citations72

FIRST CHEMICAL CORP

1 patent

US5081303AJan 14, 1992

Co-production of an aromatic monoamine and an aromatic diamine directly from benzene or a benzene derivative through controlled nitration and reduction

FIRST CHEMICAL CORP14 citations70

GREENFIELD HAROLD

UNIROYAL INC

Process for making diarylamines

Nuclear hydrogenation of n-aryl carbamates

Production of fiber-forming polyamides by transamidation of N-alicyclic diamides with dicarboxylic acids

Process for preparing N&#39;-methyl acethydrazide

Process for preparing N,N-disubstituted acid hydrazides

UNIROYAL CHEM CO INC

Process for the production of 2,2,6,6-tetraalkyl-4-piperidylamines

Process for the production of 2,2,6,6-tetraalkyl-4-piperidylamines

FIRST CHEMICAL CORP

Co-production of an aromatic monoamine and an aromatic diamine directly from benzene or a benzene derivative through controlled nitration and reduction

Process for preparing N'-methyl acethydrazide