Hirokazu KATO

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Nagasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of evaluating cleanliness, method of determining cleaning co...
- Patent number 11,920,257
- Issue date Mar 5, 2024
- Sumco Corporation
- Takashi Muramatsu
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method of etching boron-doped p-type silicon wafer, method of evalu...
- Patent number 11,424,129
- Issue date Aug 23, 2022
- Sumco Corporation
- Hirokazu Kato
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of evaluating cleanliness, method of determining cleaning co...
- Patent number 11,118,285
- Issue date Sep 14, 2021
- Sumco Corporation
- Takashi Muramatsu
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
METHOD OF EVALUATING CLEANLINESS, METHOD OF DETERMINING CLEANING CO...
- Publication number 20210363660
- Publication date Nov 25, 2021
- SUMCO CORPORATION
- Takashi MURAMATSU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD OF ETCHING BORON-DOPED P-TYPE SILICON WAFER, METHOD OF EVALU...
- Publication number 20210028023
- Publication date Jan 28, 2021
- SUMCO CORPORATION
- Hirokazu KATO
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD OF EVALUATING CLEANLINESS, METHOD OF DETERMINING CLEANING CO...
- Publication number 20190106810
- Publication date Apr 11, 2019
- SUMCO CORPORATION
- Takashi MURAMATSU
- H01 - BASIC ELECTRIC ELEMENTS