Inventor

KAWAI RYOZO

JP7 patents

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

MITSUBISHI GAS CHEMICAL CO

4 patents

US5051309ASep 24, 1991

MGC FILSEET CO LTD

1 patent

US7350917B2Apr 1, 2008

Light control plastic lens, coated sheet-like light control element for the lens production, and a production method for light control plastic lens

MGC FILSEET CO LTD31 citations87

FUJI KASEI CO LTD

1 patent

US7198830B2Apr 3, 2007

Polycarbonate resin composition and polarizing sheet used the same

FUJI KASEI CO LTD4 citations55

MGC FILSHEET CO LTD

1 patent

US7872795B2Jan 18, 2011

Laminated body for optical purposes that includes a melanin-containing layer and an optical product which includes the laminate

MGC FILSHEET CO LTD1 citations40

KAWAI RYOZO

MITSUBISHI GAS CHEMICAL CO

Anti-dazzling polycarbonate polarizing plate

Biodegradable water-soluble polymer

Aliphatic polyester carbonate and process for producing the same

Process for producing a polarizing film

MGC FILSEET CO LTD

Light control plastic lens, coated sheet-like light control element for the lens production, and a production method for light control plastic lens

FUJI KASEI CO LTD

Polycarbonate resin composition and polarizing sheet used the same

MGC FILSHEET CO LTD

Laminated body for optical purposes that includes a melanin-containing layer and an optical product which includes the laminate