Inventor

AKIBA MASATSUGU

JP15 patents

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

SUMITOMO CHEMICAL CO

13 patents

US5939473AAug 17, 1999

Epoxy resin, resin composition, and resin-encapsulated semiconductor device

SUMITOMO CHEMICAL CO6 citations73

US5939509AAug 17, 1999

Epoxy resin, resin composition, and resin-encapsulated semiconductor device

SUMITOMO CHEMICAL CO5 citations73

US5780145AJul 14, 1998

Filler-containing resin composition suitable for injection molding and transfer molding

SUMITOMO CHEMICAL CO8 citations73

US5719225AFeb 17, 1998

Filler-containing resin composition suitable for injection molding and transfer molding

SUMITOMO CHEMICAL CO15 citations73

US5326881AJul 5, 1994

Unsaturated imide compounds containing alicyclic structure, process for producing the same and intermediate therefor

SUMITOMO CHEMICAL CO5 citations73

US6011130AJan 4, 2000

Epoxy resin composition and process for producing the same

SUMITOMO CHEMICAL CO4 citations62

US5750789AMay 12, 1998

Unsaturated imide compounds containing alicyclic structure, process for producing the same and intermediate therefor

SUMITOMO CHEMICAL CO2 citations62

US5646204AJul 8, 1997

Epoxy resin composition and resin-encapsulated semiconductor device

SUMITOMO CHEMICAL CO5 citations62

US7977418B2Jul 12, 2011

Bisphenol monoester-based stabilizer composition, thermoplastic polymer composition and method of manufacturing the same, thermoplastic polymer molded product, and method of stabilizing thermoplastic polymer

SUMITOMO CHEMICAL CO2 citations59

US5854370ADec 29, 1998

Epoxy resin stilbenes and process for producing the same by photoisomerization

SUMITOMO CHEMICAL CO1 citations52

US5705596AJan 6, 1998

Epoxy resin and process for producing the same

SUMITOMO CHEMICAL CO0 citations52

US5498687AMar 12, 1996

Unsaturated imide compounds containing alicyclic structure, process for producing the same and intermediate therefor

SUMITOMO CHEMICAL CO0 citations52

US5444165AAug 22, 1995

Unsaturated imide compounds containing alicyclic structure, process for producing the same and intermediate therefor

SUMITOMO CHEMICAL CO0 citations52

SOMA RYOJI

2 patents

US8536258B2Sep 17, 2013

Stabilizer and method of manufacturing the same, thermoplastic polymer composition using the same, and method of stabilizing thermoplastic polymer

SOMA RYOJI1 citations45

US8076402B2Dec 13, 2011

Bisphenol monoester compound

SOMA RYOJI0 citations41