Hiroki MASUZAWA

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Fire detection apparatus
- Patent number 12,260,725
- Issue date Mar 25, 2025
- Hochiki Corporation
- Keisuke Washizu
- G08 - SIGNALLING
Information Patent Grant
Smoke detector cover for fire alarm
- Patent number D1034264
- Issue date Jul 9, 2024
- Hochiki Corporation
- Keisuke Washizu
- D10 - Measuring, testing, or signalling instruments
Information Patent Grant
Smoke detector for fire alarm
- Patent number D1034263
- Issue date Jul 9, 2024
- Hochiki Corporation
- Keisuke Washizu
- D10 - Measuring, testing, or signalling instruments

Patents Applicationslast 30 patents

Information Patent Application
FIRE DETECTION APPARATUS
- Publication number 20230417665
- Publication date Dec 28, 2023
- Hochiki Corporation
- Keisuke WASHIZU
- G01 - MEASURING TESTING
Information Patent Application
FIRE DETECTION APPARATUS
- Publication number 20230401947
- Publication date Dec 14, 2023
- Hochiki Corporation
- Keisuke WASHIZU
- G08 - SIGNALLING
Information Patent Application
FIRE DETECTION APPARATUS
- Publication number 20230393034
- Publication date Dec 7, 2023
- Hochiki Corporation
- Keisuke WASHIZU
- G01 - MEASURING TESTING
Information Patent Application
FIRE DETECTION APPARATUS
- Publication number 20230393035
- Publication date Dec 7, 2023
- HOCHIK I Corporation
- Keisuke WASHIZU
- G01 - MEASURING TESTING