Inventor
HIRAKAWA TAKAFUMI
JP11 patents
⚠️ This page may combine multiple inventors who share the name “HIRAKAWA TAKAFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UBE INDUSTRIES
10 patentsUS5250707AOct 5, 1993
Process for preparing ε-caprolactone
UBE INDUSTRIES36 citations89
US5994553ANov 30, 1999
Method for preparing 2-mercaptothiazole
UBE INDUSTRIES7 citations72
US5245029ASep 14, 1993
Ion exchange purification method of aqueous caprolactam solution
UBE INDUSTRIES15 citations72
US7385022B2Jun 10, 2008
Polythiocarbonate polythiol
UBE INDUSTRIES4 citations62
US5808092ASep 15, 1998
Process for preparing-1-ethyl-5-hydroxypyrazole
UBE INDUSTRIES5 citations59
US5098607AMar 24, 1992
Process for stabilizing percarboxylic acid
UBE INDUSTRIES4 citations58
US8362194B2Jan 29, 2013
Polymerizable composition and polythiocarbonate polythioether
UBE INDUSTRIES1 citations51
US7544761B2Jun 9, 2009
Polythiourethane
UBE INDUSTRIES0 citations51
US8349995B2Jan 8, 2013
Polythiocarbonatepoly(thio)epoxide
UBE INDUSTRIES0 citations50
US5206425AApr 27, 1993
Process for preparing perpropionic acid solution
UBE INDUSTRIES0 citations48