Kohei Yamada

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Combination ionization and photoelectric smoke detector
- Patent number 4,469,953
- Issue date Sep 4, 1984
- Nittan Company, Limited
- Takao Fujisawa
- G08 - SIGNALLING

Patents Applicationslast 30 patents

Information Patent Application
TONER
- Publication number 20250147442
- Publication date May 8, 2025
- Zeon Corporation
- Kojiro Akazaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY