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Patents Grants
last 30 patents
Information
Patent Grant
Method for producing semiconductor element and chemical solution to...
Patent number
12,104,260
Issue date
Oct 1, 2024
Tokyo Ohka Kogyo Co., Ltd.
Yukihisa Wada
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Ruthenium-etching solution, method for manufacturing ruthenium-etch...
Patent number
11,898,081
Issue date
Feb 13, 2024
Tokyo Ohka Kogyo Co., Ltd.
Takuya Ohhashi
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Method for manufacturing ruthenium wiring
Patent number
11,686,002
Issue date
Jun 27, 2023
Tokyo Ohka Kogyo Co., Ltd.
Yukihisa Wada
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Etching solution and method for manufacturing semiconductor element
Patent number
11,518,937
Issue date
Dec 6, 2022
Tokyo Ohka Kogyo Co., Ltd.
Yukihisa Wada
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Etching solution, and method of producing semiconductor element
Patent number
11,120,994
Issue date
Sep 14, 2021
Tokyo Ohka Kogyo Co., Ltd.
Yukihisa Wada
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Patents Applications
last 30 patents
Information
Patent Application
METHOD FOR PROCESSING SUBSTRATE, CHEMICAL SOLUTION, AND METHOD FOR...
Publication number
20240395538
Publication date
Nov 28, 2024
Tokyo Ohka Kogyo Co., Ltd.
Takumi NAMIKI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
RINSING SOLUTION, METHOD OF TREATING SUBSTRATE, AND METHOD OF MANUF...
Publication number
20230265362
Publication date
Aug 24, 2023
Tokyo Ohka Kogyo Co., Ltd.
Yukihisa WADA
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information
Patent Application
CLEANING LIQUID AND METHOD FOR CLEANING SUBSTRATE
Publication number
20230203408
Publication date
Jun 29, 2023
Tokyo Ohka Kogyo Co., Ltd.
Yukihisa WADA
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information
Patent Application
CLEANING LIQUID AND METHOD FOR CLEANING SUBSTRATE
Publication number
20230203409
Publication date
Jun 29, 2023
Tokyo Ohka Kogyo Co., Ltd.
Yukihisa WADA
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information
Patent Application
CHEMICAL SOLUTION USED FOR CLEANING OR ETCHING RUTHENIUM-CONTAINING...
Publication number
20220243127
Publication date
Aug 4, 2022
Tokyo Ohka Kogyo Co., Ltd.
Yukihisa WADA
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information
Patent Application
METHOD FOR PRODUCING SEMICONDUCTOR ELEMENT AND CHEMICAL SOLUTION TO...
Publication number
20220205111
Publication date
Jun 30, 2022
Tokyo Ohka Kogyo Co., Ltd.
Yukihisa WADA
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
METHOD FOR PRODUCING AQUEOUS SOLUTION OF PURIFIED ORTHOPERIODIC ACI...
Publication number
20220194791
Publication date
Jun 23, 2022
Tokyo Ohka Kogyo Co., Ltd.
Hiroshi ITO
C01 - INORGANIC CHEMISTRY
Information
Patent Application
METHOD FOR MANUFACTURING RUTHENIUM WIRING
Publication number
20220049361
Publication date
Feb 17, 2022
Tokyo Ohka Kogyo Co., Ltd.
Yukihisa WADA
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
ETCHING SOLUTION AND METHOD FOR MANUFACTURING SEMICONDUCTOR ELEMENT
Publication number
20210198572
Publication date
Jul 1, 2021
Tokyo Ohka Kogyo Co., Ltd.
Yukihisa WADA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
RUTHENIUM-ETCHING SOLUTION, METHOD FOR MANUFACTURING RUTHENIUM-ETCH...
Publication number
20210155851
Publication date
May 27, 2021
Tokyo Ohka Kogyo Co., Ltd.
Takuya OHHASHI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
ETCHING SOLUTION, AND METHOD OF PRODUCING SEMICONDUCTOR ELEMENT
Publication number
20200211856
Publication date
Jul 2, 2020
Tokyo Ohka Kogyo Co., Ltd.
Yukihisa WADA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
ETCHING SOLUTION, METHOD FOR PROCESSING OBJECT TO BE PROCESSED, AND...
Publication number
20200190672
Publication date
Jun 18, 2020
Tokyo Ohka Kogyo Co., Ltd.
Takuya OHHASHI
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...