Kiyoshi Nakashima

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Patents Grantslast 30 patents

Information Patent Grant
Laminated film for forming an easily openable tightly sealed bag
- Patent number 5,141,795
- Issue date Aug 25, 1992
- Asahi Chemical Polyflex Ltd.
- Hisao Kai
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method for producing an easily openable tightly sealed bag
- Patent number 5,038,547
- Issue date Aug 13, 1991
- Asahi Chemical Polyflex, Ltd.
- Hisao Kai
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Slit imparting device for forming through cuts in a plastic film
- Patent number 4,977,807
- Issue date Dec 18, 1990
- Asahi Chemical Polyflex Ltd.
- Hisao Kai
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Easily openable tightly sealed bag
- Patent number 4,919,272
- Issue date Apr 24, 1990
- Asahi Chemical Polyflex
- Hisao Kai
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL