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Iwaki Co., Ltd.

USPTO Granted Patents = 37

% Expired Patents = 5.4

EPO Patents = 12

Trademarks = 2

Forward Citations = 447

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55 inventors (with patents filed for the assignee):

Toshiki Oniduka (9 out of 9 patents)

Hiroyuki Onuma (4 out of 4 patents)

Toshinori Yanagihara (3 out of 3 patents)

4. Tsuyoshi Watanabe (3 out of 3 patents)

5. Tsutomu Sawada (3 out of 3 patents)

6. Kazuo Okada (3 out of 3 patents)

7. Yoshiaki Fujinaka (3 out of 3 patents)

8. Kazuhiko Sato (3 out of 3 patents)

9. Norishige Hirakawa (3 out of 3 patents)

10. Takuya Seki (3 out of 3 patents)

11. Toshiaki Kamei (3 out of 3 patents)

12. Shinichirou Koreeda (3 out of 3 patents)

13. Hiroyuki Tanabe (2 out of 2 patents)

14. Yoshio Ogawa (2 out of 2 patents)

15. Mikio Mizukoshi (2 out of 2 patents)

Core Competencies:

Diaphragm Pump

Magnetic Pump

Reciprocating Pump

Bellows Pump

Centrifugal Pump

Hybrid Magnetic Bearing

Valve Structure

Cooling System

Drive Device

Electromagnetic Operation

Tank Design

Pump System

37 patents: Sort by Forward Citations

1. 12467452 - Mounting structure for diaphragm and retainer (2025-11-11),

2. 12352279 - Rotary drive device and pump (2025-07-08),

3. 12345270 - Pump (2025-07-01),

4. 11876431 - Magnetic bearing, drive device equipped with the same, and pump (2024-01-16),

5. 11313365 - Reciprocating pump designed for preventing valves from being assembled erroneously (2022-04-26),

6. 11313362 - Tubephragm pump (2022-04-26),

7. 11105321 - Plunger pump having a rotatable plunger with cut face disposed in a cylinder wherein the cylinder includes a main body and a spacer section with the spacer section having a greater length in an axial direction than the maximum stroke length of the plunger (2021-08-31),

8. 11098711 - Pump device (2021-08-24),

9. 10941868 - Valve seat and valve structure (2021-03-09),

10. 10890190 - Magnetic pump (2021-01-12),

11. 10711779 - Plunger pump (2020-07-14),

12. 10704547 - Volume pump including a bellows and a suction valve and a discharge valve wherein the valves comprise a valve seat and a valve body and wherein a fixed section of the valve body includes a communicating flow path (2020-07-07),

13. 10550835 - Duplex reciprocating pump (2020-02-04),

14. 9239047 - Bellows pump (2016-01-19),

15. 8288906 - Maglev motor and pump (2012-10-16),

Company Overview

Iwaki Co., Ltd. is a prominent Japanese company specializing in fluid handling solutions, particularly in the development and manufacturing of pumps, valves, and related equipment. The company serves a diverse range of industries, including chemical processing, pharmaceuticals, and food and beverage, focusing on innovative technologies that enhance efficiency and reliability in fluid management. With a commitment to quality and precision, Iwaki continues to advance its research in fluid dynamics and engineering to meet the evolving needs of its global clientele.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

37 Patents

#965 in Tokyo

#2,059 in Japan

#18,299 in the World

Iwaki Co., Ltd.

Forward Citations = 447

55 inventors:

Toshiki Oniduka (9 out of 9 patents)

Hiroyuki Onuma (4 out of 4 patents)

Toshinori Yanagihara (3 out of 3 patents)

4. Tsuyoshi Watanabe (3 out of 3 patents)

5. Tsutomu Sawada (3 out of 3 patents)

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