Inventor
KAWAI HIROMASA
JP12 patents
⚠️ This page may combine multiple inventors who share the name “KAWAI HIROMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI CHEMICAL CO LTD
10 patentsUS5583191ADec 10, 1996
Plastic lens
HITACHI CHEMICAL CO LTD21 citations91
US4591626AMay 27, 1986
Polymers of tricyclo[5.2.1.02,6 ]deca-8-yl (meth)acrylate
HITACHI CHEMICAL CO LTD36 citations89
US5559200ASep 24, 1996
Resin for plastic lens
HITACHI CHEMICAL CO LTD16 citations81
US5449731ASep 12, 1995
Resin for plastic lens
HITACHI CHEMICAL CO LTD18 citations81
US4868261ASep 19, 1989
Optical resin material
HITACHI CHEMICAL CO LTD20 citations81
US5155190AOct 13, 1992
Process for producing poly methyl methacrylate/N-substituted maleimide optical resin
HITACHI CHEMICAL CO LTD20 citations77
US6277938B1Aug 21, 2001
Process for the preparation of non-birefringent optical resin and optical elements made by using the resin prepared by the process
HITACHI CHEMICAL CO LTD10 citations74
US4986648AJan 22, 1991
Lens and optical disc base plate obtained from copolymer of norbornyl (meth)acrylate
HITACHI CHEMICAL CO LTD18 citations73
US5663264ASep 2, 1997
Transparent resin and plastic lens
HITACHI CHEMICAL CO LTD11 citations72
US4351910ASep 28, 1982
Expandable styrene series resin composition and process for production thereof
HITACHI CHEMICAL CO LTD13 citations72