Yoshihisa Ishihara

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Utsunomiya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for the production of foamed polyolefin sheets
- Patent number 5,281,119
- Issue date Jan 25, 1994
- Japan Styrene Paper Corporation
- Shoji Iwano
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Process for the production of foamed polyolefin sheets
- Patent number 5,281,377
- Issue date Jan 25, 1994
- Japan Styrene Paper Corporation
- Shoji Iwano
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL