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For the Inventor, By the Inventor

Tokushima, Japan

Anan Kasei Co., Ltd.

Calculating rank
USPTO Granted Patents = 6



Forward Citations = 49

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9 inventors (with patents filed for the assignee):

goldMedal Naotaka Ohtake (2 out of 13 patents)

silverMedal Kazuhiko Yokota (2 out of 7 patents)

bronzeMedal Shigeru Aozasa (2 out of 2 patents)

4.  Bernard Pacaud (2 out of 3 patents)

5.  Emmanuel Rohart (1 out of 20 patents)

6.  Eisaku Suda (1 out of 7 patents)

7.  Lianxin Dai (1 out of 1 patent)

8.  Michiya Ohashi (1 out of 1 patent)

9.  Yoshimasa Katayama (1 out of 1 patent)

10.  Shigeru Anan Kasei Co Ltd Aozasa (0 patent)

11.  Bernard Anan Kasei Co Ltd Pacaud (0 patent)

12.  Lianxin Anan Kasei Co Ltd Dai (0 patent)

13.  Emmanuel Rhodia Electronics & Catalysis Rohart (0 patent)


6 patents:

1. 8921255 - Complex oxide, method for producing same and exhaust gas purifying catalyst (2014-12-30),
2. 8435919 - High specific surface area mixed oxide of cerium and of another rare earth, preparation method and use in catalysis (2013-05-07),
3. 7361322 - Ceric oxide and method for production thereof, and catalyst for exhaust gas clarification (2008-04-22),
4. 7119041 - Cerium based composite oxide, sintered product thereof and method for preparation thereof (2006-10-10),
5. 6294097 - Method for treating waste water containing nitrate ions (2001-09-25),
6. 6171572 - Method for preparing a zirconium-cerium composite oxide (2001-01-09),
Company Overview
Anan Kasei Co., Ltd. is a leading chemical manufacturing company based in Japan. With a focus on innovation and sustainability, we provide a wide range of high-quality chemicals for various industries such as automotive, electronics, and construction. Our state-of-the-art facilities and expert team ensure top-notch products and services that meet the needs of our clients worldwide.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

6 Patents

#17 in Tokushima

#5,990 in Japan

Tokushima, JP
Tokushima, Japan

Anan Kasei Co., Ltd.

Forward Citations = 49

9 inventors:

goldMedal Naotaka Ohtake (2 out of 13 patents)

silverMedal Kazuhiko Yokota (2 out of 7 patents)

bronzeMedal Shigeru Aozasa (2 out of 2 patents)

4.  Bernard Pacaud (2 out of 3 patents)

5.  Emmanuel Rohart (1 out of 20 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Anan Kasei Co., Ltd.. Retrieved from https://idiyas.com/company/anan-kasei-company

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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