Takehiko Otoyo

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Porous membrane for membrane distillation, and method for operating...
- Patent number 11,352,270
- Issue date Jun 7, 2022
- Asahi Kasei Kabushiki Kaisha
- Tomotaka Hashimoto
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method for purifying aqueous suspension
- Patent number 6,495,041
- Issue date Dec 17, 2002
- Asahi Kasei Kogyo Kabushiki Kaisha
- Tohru Taniguchi
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method for purifying aqueous suspension
- Patent number 6,322,703
- Issue date Nov 27, 2001
- Asahi Kasei Kabushiki Kaisha
- Tohru Taniguchi
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method for removing heavy metal ions from contaminated water and a...
- Patent number 5,087,372
- Issue date Feb 11, 1992
- Asahi Kasei Kogyo Kabushiki Kaisha
- Kazuo Toyomoto
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Patents Applicationslast 30 patents

Information Patent Application
Porous Membrane for Membrane Distillation, and Method for Operating...
- Publication number 20200109070
- Publication date Apr 9, 2020
- Asahi Kasei Kabushiki Kaisha
- Tomotaka Hashimoto
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
Solvent Separation System and Method
- Publication number 20170259210
- Publication date Sep 14, 2017
- Asahi Kasei Kabushiki Kaisha
- Junichi Kanemaru
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Method for purifying aqueous suspension
- Publication number 20020056682
- Publication date May 16, 2002
- Asahi Kasei Kabushiki Kaisha
- Tohru Taniguchi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL