Yoshiaki Iwaya

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Patents Grantslast 30 patents

Information Patent Grant
PTC element and process for producing the same
- Patent number 5,817,423
- Issue date Oct 6, 1998
- Unitika Ltd.
- Hiroshi Kajimaru
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fiber-reinforced porous plastic tube
- Patent number 5,721,031
- Issue date Feb 24, 1998
- Unitika Ltd.
- Yoshiaki Echigo
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Poly(amic acid) solution and polyimide film or polymide-coated mate...
- Patent number 5,719,253
- Issue date Feb 17, 1998
- Unitika Ltd.
- Yoshiaki Echigo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Porous carbonaceous material and a method for producing the same
- Patent number 5,648,027
- Issue date Jul 15, 1997
- Osaka Gas Company Ltd.
- Hiroyuki Tajiri
- D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information Patent Grant
Film forming solution, porous film obtained therefrom and coated ma...
- Patent number 5,510,395
- Issue date Apr 23, 1996
- Unitika, Ltd.
- Isao Tomioka
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Aliphatic polyesters and method of preparing the same
- Patent number 5,504,148
- Issue date Apr 2, 1996
- Unitika Ltd.
- Yoshiaki Iwaya
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...