Koyanagi; Hidetoshi
Patent Applications and Registrations
Patent applications and USPTO patent grants for Koyanagi; Hidetoshi.The latest application filed is for "structure of check valve for air-packing device".
- Koyanagi; Hidetoshi - Kashiwara JP
- Koyanagi; Hidetoshi - Osaka JP
| Patent | Date |
|---|---|
| Structure of check valve for air-packing device Grant 7,694,701 - Koyanagi April 13, 2 | 2010-04-13 |
| Structure of check valve for air-packing device Grant 7,481,252 - Koyanagi January 27, 2 | 2009-01-27 |
| Structure of check valve for air-packing device App 20070186993 - Koyanagi; Hidetoshi | 2007-08-16 |
| Structure of check valve for air-packing device App 20070186994 - Koyanagi; Hidetoshi | 2007-08-16 |
| Structure of check-valve and production method thereof and inflatable air-packing device using same Grant 7,204,278 - Koyanagi , et al. April 17, 2 | 2007-04-17 |
| Structure of air-packing device having improved shock absorbing capability Grant 7,000,767 - Tanaka , et al. February 21, 2 | 2006-02-21 |
| Structure Of Air-packing Device Having Improved Shock Absorbing Capability App 20050263425 - Tanaka, Yasuzumi ; et al. | 2005-12-01 |
| Structure of check-valve and production method thereof and inflatable air-packing device using same App 20050263205 - Koyanagi, Hidetoshi ; et al. | 2005-12-01 |
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