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Hisaka Works, Ltd.

USPTO Granted Patents = 46

% Expired Patents = 4.3

EPO Patents = 15

Forward Citations = 356

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60 inventors (with patents filed for the assignee):

Hiroyuki Sumitomo (23 out of 23 patents)

Akira Horiguchi (9 out of 13 patents)

Kenzo Masutani (7 out of 7 patents)

4. Osamu Ishimaru (5 out of 5 patents)

5. Isamu Hiwatashi (3 out of 3 patents)

6. Seiichi Matsumura (3 out of 5 patents)

7. Mana Iwaki (3 out of 3 patents)

8. Kiyoshi Ishihama (3 out of 3 patents)

9. Kenji Kusunoki (3 out of 3 patents)

10. Haruo Uehara (3 out of 18 patents)

11. Yoshiharu Sakai (3 out of 3 patents)

12. Kazuyuki Kobayashi (3 out of 3 patents)

13. Ken'ichi Yamada (3 out of 3 patents)

14. Masafumi Inoue (2 out of 32 patents)

15. Mitsuhiko Tanahashi (2 out of 2 patents)

Core Competencies:

Plate Heat Exchanger

Vapor Contact-Type Heating

Sterilizing Method

Textile Material Treatment

Thin Film Concentrating Apparatus

Heat Recovery System

Fried Food Production

Evaporating Apparatus

Ball Valve

Wood Treating Method

Spray Sterilization

46 patents: Sort by Forward Citations

1. 9933211 - Plate heat exchanger (2018-04-03),

2. 9927186 - Plate heat exchanger (2018-03-27),

3. 9772146 - Plate heat exchanger (2017-09-26),

4. 8262066 - Vapor contact-type heating device (2012-09-11),

5. 7775502 - Ball valve with a rotatable body capable of being kept out of substantial contact with a seat member (2010-08-17),

6. 5988268 - Plate type heat exchanger (1999-11-23),

7. 5895626 - Sterilizing method, apparatus and container of solid matter or liquid (1999-04-20),

8. 5850651 - Air jet flow type apparatus and method for treating textile material (1998-12-22),

9. 5849246 - Apparatus for spray sterilization and method therefor (1998-12-15),

10. 5721001 - Fried food producing method and apparatus therefor (1998-02-24),

11. 5538593 - Thin film flow-down type concentrating apparatus (1996-07-23),

12. 5527516 - Spray type retort sterilizer (1996-06-18),

13. 5343913 - Wood treating method and apparatus (1994-09-06),

14. 5247975 - Wood treating method and apparatus (1993-09-28),

15. 5178212 - Plate-type heat exchanger (1993-01-12),

Hisaka Works, Ltd. is a prominent manufacturer based in Osaka, Japan, specializing in advanced thermal management solutions. The company focuses on the development and production of plate heat exchangers, vapor contact-type heating devices, and sterilization apparatuses, catering to various industries including food processing and energy recovery. With a commitment to innovation, Hisaka also explores technologies such as air jet flow treatment and thin film concentrating apparatuses, enhancing efficiency and sustainability in thermal applications.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

46 Patents

#193 in Osaka

#1,803 in Japan

#15,096 in the World

Hisaka Works, Ltd.

Forward Citations = 356

60 inventors:

Hiroyuki Sumitomo (23 out of 23 patents)

Akira Horiguchi (9 out of 13 patents)

Kenzo Masutani (7 out of 7 patents)

4. Osamu Ishimaru (5 out of 5 patents)

5. Isamu Hiwatashi (3 out of 3 patents)

Please report any incorrect information to [email protected]

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