Hidetoshi Koyanagi

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Kashiwara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Structure of check valve for air-packing device
- Patent number 7,694,701
- Issue date Apr 13, 2010
- Air-Paq, Inc.
- Hidetoshi Koyanagi
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Structure of check valve for air-packing device
- Patent number 7,481,252
- Issue date Jan 27, 2009
- Air-Paq, Inc.
- Hidetoshi Koyanagi
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Structure of check-valve and production method thereof and inflatab...
- Patent number 7,204,278
- Issue date Apr 17, 2007
- Air-Paq, Inc.
- Hidetoshi Koyanagi
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Structure of air-packing device having improved shock absorbing cap...
- Patent number 7,000,767
- Issue date Feb 21, 2006
- Air-Paq, Inc.
- Yasuzumi Tanaka
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents

Information Patent Application
Structure of check valve for air-packing device
- Publication number 20070186993
- Publication date Aug 16, 2007
- Hidetoshi Koyanagi
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Application
Structure of check valve for air-packing device
- Publication number 20070186994
- Publication date Aug 16, 2007
- Hidetoshi Koyanagi
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Application
Structure of check-valve and production method thereof and inflatab...
- Publication number 20050263205
- Publication date Dec 1, 2005
- Hidetoshi Koyanagi
- B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
Information Patent Application
STRUCTURE OF AIR-PACKING DEVICE HAVING IMPROVED SHOCK ABSORBING CAP...
- Publication number 20050263425
- Publication date Dec 1, 2005
- Yasuzumi Tanaka
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL