P

Inventor

KITAMURA MASARU

JP25 patents
⚠️ This page may combine multiple inventors who share the name “KITAMURA MASARU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SUMITOMO CHEMICAL CO

21 patents
US4986989AJan 22, 1991

Zeolite fungicide

SUMITOMO CHEMICAL CO41 citations89
US4717770AJan 5, 1988

Process for producing epsilon-caprolactam

SUMITOMO CHEMICAL CO24 citations82
US6265574B1Jul 24, 2001

Process for producing ε-caprolactam

SUMITOMO CHEMICAL CO18 citations81
US5403801AApr 4, 1995

Process for producing ε-caprolactam and activating solid catalysts therefor

SUMITOMO CHEMICAL CO16 citations81
US4968793ANov 6, 1990

Process for producing ε-caprolactam

SUMITOMO CHEMICAL CO13 citations74
US5502184AMar 26, 1996

Process for producing ε -caprolactam

SUMITOMO CHEMICAL CO13 citations73
US5212302AMay 18, 1993

Process for producing epsilon-caprolactam and activating solid catalysts therefor

SUMITOMO CHEMICAL CO14 citations73
US4717769AJan 5, 1988

Production of epsilon-caprolactam

SUMITOMO CHEMICAL CO15 citations73
US5304643AApr 19, 1994

Process for producing epsilon-caprolactam

SUMITOMO CHEMICAL CO13 citations72
US5354859AOct 11, 1994

ε-caprolactam

SUMITOMO CHEMICAL CO8 citations71
US5071802ADec 10, 1991

Regeneration of catalysts by burning in the presence of alcohols

SUMITOMO CHEMICAL CO7 citations71
US5407881AApr 18, 1995

Process for increasing the strength of a zeolite molding

SUMITOMO CHEMICAL CO18 citations70
US5066630ANov 19, 1991

Method for removing nitrogen-containing organic compounds from crystalline metallosilicate

SUMITOMO CHEMICAL CO4 citations63
US7060645B2Jun 13, 2006

Method for manufacturing zeolite and method for manufacturing ε-caprolactam

SUMITOMO CHEMICAL CO3 citations62
US7026474B2Apr 11, 2006

Method for producing ε-caprolactam and method for reactivating catalyst for production of ε-caprolactam

SUMITOMO CHEMICAL CO2 citations62
US5315039AMay 24, 1994

Method for inhibiting thermal decomposition of cycloalkanone oximes

SUMITOMO CHEMICAL CO3 citations61
US7687621B2Mar 30, 2010

Process for regenerating catalyst for producing e-caprolactam and process for producing e-caprolactam

SUMITOMO CHEMICAL CO0 citations52
US7238803B2Jul 3, 2007

Method for producing epsilon-caprolactam

SUMITOMO CHEMICAL CO0 citations52
US7189845B2Mar 13, 2007

Method for producing ε-caprolactam

SUMITOMO CHEMICAL CO0 citations52
US6258949B1Jul 10, 2001

Apparatus and process for producing ε-caprolactam

SUMITOMO CHEMICAL CO1 citations49
US7071360B2Jul 4, 2006

Method for evaporating cyclohexanone oxime

SUMITOMO CHEMICAL CO0 citations44

TOSHIBA KK

2 patents

TAISEI KIKO CO LTD

1 patent

WAKO PURE CHEM IND LTD

1 patent