Etsuji Mukaiyama

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Respiration protecting apparatus
- Patent number 6,854,464
- Issue date Feb 15, 2005
- Yamamoto Kogaku Co., Ltd.
- Etsuji Mukaiyama
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Length adjusting device for fastening straps of a mask
- Patent number 5,906,033
- Issue date May 25, 1999
- Yamamoto Kogaku Co., Ltd.
- Etsuji Mukaiyama
- A41 - WEARING APPAREL

Patents Applicationslast 30 patents

Information Patent Application
Respiration protecting apparatus
- Publication number 20040079373
- Publication date Apr 29, 2004
- YAMAMOTO KOGAKU CO., LTD.
- Etsuji Mukaiyama
- A62 - LIFE-SAVING FIRE-FIGHTING