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For the Inventor, By the Inventor

Osaka, Japan

Aquatech Corporation

Calculating rank
USPTO Granted Patents = 11

% Expired Patents = 27.3



Trademarks = 2

Forward Citations = 186

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16 inventors (with patents filed for the assignee):

goldMedal Shunji Eto (4 out of 4 patents)

silverMedal Toyokazu Matsunami (2 out of 2 patents)

bronzeMedal Benjamin P Fisco, Jr (2 out of 2 patents)

4.  Takamichi Honma (1 out of 3 patents)

5.  Hiroshi Tsubota (1 out of 2 patents)

6.  Shinichi Yamasaki (1 out of 4 patents)

7.  Shoji Nishikawa (1 out of 8 patents)

8.  Nobuaki Fujiwara (1 out of 1 patent)

9.  Akifusai Ohnishi (1 out of 1 patent)

10.  Hideki Doi (1 out of 1 patent)

11.  Miroslav Colic (1 out of 3 patents)

12.  Toshiaki Muratani (1 out of 5 patents)

13.  Akifusa Ohnishi (1 out of 1 patent)

14.  Joseph R Driear (1 out of 7 patents)

15.  Angelo DiVito (1 out of 2 patents)


11 patents:

1. 7611631 - Indium adsorbent and indium fractioning method (2009-11-03),
2. 7594996 - Petroleum recovery and cleaning system and process (2009-09-29),
3. 7427354 - Degradation treatment process and system for organics in organically-polluted water (2008-09-23),
4. 7264733 - Method for treating heavy-metal-containing wastewater using sulfidizing agent (2007-09-04),
5. 6210569 - Device for collecting water polluting phytoplankton drifts and method for collecting water polluting phytoplankton drifts (2001-04-03),
6. 5906745 - Apparatus and method for purifying polluted water (1999-05-25),
7. 5565103 - Solid material flow-separating method (1996-10-15),
8. 4922571 - Vacuum loading machine (1990-05-08),
9. 4572783 - Cyclonic separator with screen and ball check (1986-02-25),
10. 4234980 - Apparatus for sewer cleaning and the like (1980-11-25),
11. 4199837 - Apparatus for sewer cleaning and the like (1980-04-29),
Company Overview
Aquatech Corporation, headquartered in Osaka, Japan, specializes in advanced water treatment technologies and solutions. The company focuses on developing innovative systems for water purification, desalination, and wastewater treatment, catering to various industries including municipal, industrial, and energy sectors. With a commitment to sustainability, Aquatech aims to address global water challenges through cutting-edge research and engineering, enhancing water quality and availability while promoting environmental stewardship.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

11 Patents

#451 in Osaka

#4,142 in Japan

#51,831 in the World

Osaka, JP
Osaka, Japan

Aquatech Corporation

Forward Citations = 186

16 inventors:

goldMedal Shunji Eto (4 out of 4 patents)

silverMedal Toyokazu Matsunami (2 out of 2 patents)

bronzeMedal Benjamin P Fisco, Jr (2 out of 2 patents)

4.  Takamichi Honma (1 out of 3 patents)

5.  Hiroshi Tsubota (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Aquatech Corporation. Retrieved from https://idiyas.com/company/aquatech

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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