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For the Inventor, By the Inventor

Tokyo, Japan

Diafloc Co., Ltd.


USPTO Granted Patents = 8

Forward Citations = 49

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20 inventors (with patents filed for the assignee):

goldMedal Akihisa Furuno (5 out of 12 patents)

silverMedal Jun Hosoda (4 out of 7 patents)

bronzeMedal Ryoji Handa (4 out of 11 patents)

4.  Norimasa Yoshida (3 out of 4 patents)

5.  Nobuo Kurashige (2 out of 3 patents)

6.  Yasuo Ogawa (2 out of 10 patents)

7.  Masaharu Nagahama (1 out of 3 patents)

8.  Teruhiko Sugimori (1 out of 22 patents)

9.  Hideaki Habara (1 out of 17 patents)

10.  Kenzo Ariyama (1 out of 31 patents)

11.  Yukio Shibuya (1 out of 5 patents)

12.  Ken-ichi Inukai (1 out of 7 patents)

13.  Iwao Ohshima (1 out of 14 patents)

14.  Teruzo Otsuka (1 out of 1 patent)

15.  Hitoshi Tamura (1 out of 1 patent)


8 patents:

1. 5296577 - Process for producing acrylamide polymer (1994-03-22),
2. 4734238 - Process for producing powder of cationic polymer (1988-03-29),
3. 4535131 - Process for producing partially hydrolyzed acrylamide polymer (1985-08-13),
4. 4514551 - Process for the preparation of cationic polymers (1985-04-30),
5. 4455411 - Process for preparing acrylamide polymers (1984-06-19),
6. 4313863 - Modification of acrylamide polymers (1982-02-02),
7. 4306045 - Process for producing acrylamide polymers (1981-12-15),
8. 4165419 - Metal surfaces coated with aliphatic acids containing 12 carbon atoms or (1979-08-21),
Company Overview
Diafloc Co., Ltd. is a leading manufacturer of high-quality industrial filtration solutions. With a focus on innovation and customer satisfaction, we offer a wide range of filter products and services to meet the diverse needs of our clients. Our team of experts is dedicated to providing reliable and efficient filtration solutions for various industries, including automotive, pharmaceutical, and food processing. Visit our website to learn more about our products and services.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

8 Patents

#2,150 in Tokyo

#5,045 in Japan

Tokyo, JP
Tokyo, Japan

Diafloc Co., Ltd.

Forward Citations = 49

20 inventors:

goldMedal Akihisa Furuno (5 out of 12 patents)

silverMedal Jun Hosoda (4 out of 7 patents)

bronzeMedal Ryoji Handa (4 out of 11 patents)

4.  Norimasa Yoshida (3 out of 4 patents)

5.  Nobuo Kurashige (2 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Diafloc Co., Ltd.. Retrieved from https://idiyas.com/company/diafloc-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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