Inventor
ZAIMA FUMIYA
JP25 patents
⚠️ This page may combine multiple inventors who share the name “ZAIMA FUMIYA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI GAS CHEMICAL CO
15 patentsUS5712412AJan 27, 1998
Process for producing highly pure terephthalic acid
MITSUBISHI GAS CHEMICAL CO114 citations96
US5705682AJan 6, 1998
Process for producing highly pure terephthalic acid
MITSUBISHI GAS CHEMICAL CO74 citations95
US5684187ANov 4, 1997
Process for producing highly pure terephthalic acid
MITSUBISHI GAS CHEMICAL CO75 citations95
US5679847AOct 21, 1997
Process for producing terephthalic acid
MITSUBISHI GAS CHEMICAL CO56 citations95
US5880313AMar 9, 1999
Process for producing aromatic carboxylic acid
MITSUBISHI GAS CHEMICAL CO25 citations92
US7071362B2Jul 4, 2006
Process for producing alicyclic aldehydes
MITSUBISHI GAS CHEMICAL CO11 citations82
US6541662B2Apr 1, 2003
Process for producing a hydrogenation product of an aromatic carboxylic acid
MITSUBISHI GAS CHEMICAL CO7 citations73
US5021197AJun 4, 1991
Process for production of sulfonium compounds
MITSUBISHI GAS CHEMICAL CO15 citations73
US6268528B1Jul 31, 2001
Method of producing naphthalenedicarboxylic acid
MITSUBISHI GAS CHEMICAL CO8 citations72
US6013831AJan 11, 2000
Processes for the production of high-purity dimethyl 2, 6-naphthalenedicarboxylate and naphthalenedicarboxylic acid
MITSUBISHI GAS CHEMICAL CO10 citations71
US6927306B2Aug 9, 2005
Process for producing hydrogenated aromatic polycarboxylic acid and process for producing hydrogenated aromatic polycarboxylic anhydride
MITSUBISHI GAS CHEMICAL CO3 citations62
US5149857ASep 22, 1992
Process for production of sulfonium compounds
MITSUBISHI GAS CHEMICAL CO4 citations61
US5075476ADec 24, 1991
Process for production of sulfonium compounds and novel methylthiphenol derivatives
MITSUBISHI GAS CHEMICAL CO5 citations61
US5310944AMay 10, 1994
Process for producing carboxylated compound
MITSUBISHI GAS CHEMICAL CO1 citations52
US5187311AFeb 16, 1993
Methylthiophenol derivatives and p-methylthiophenyl chloroformates and processes for producing these derivatives
MITSUBISHI GAS CHEMICAL CO1 citations51
ZAIMA FUMIYA
7 patentsUS9347112B2May 24, 2016
Pretreatment method for chelate resin having pyridine ring used for collecting catalyst in terephthalic acid production process
ZAIMA FUMIYA0 citations40
US9266810B2Feb 23, 2016
Crossflow type filtering operation method using ceramic filter
ZAIMA FUMIYA0 citations40
US8957247B2Feb 17, 2015
Pretreatment method for chelate resin having pyridine ring used for collecting catalyst in aromatic carboxylic acid production process
ZAIMA FUMIYA0 citations40
US8242304B2Aug 14, 2012
Process for production of isophthalic acid
ZAIMA FUMIYA0 citations39
US8236982B2Aug 7, 2012
Process for production of terephthalic acid
ZAIMA FUMIYA0 citations39
US8178716B2May 15, 2012
Method of crystallization
ZAIMA FUMIYA0 citations36
US9150487B2Oct 6, 2015
Crossflow type filtering operation method using ceramic filter
ZAIMA FUMIYA0 citations33