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Osaka Sanso Kogyo Ltd.

USPTO Granted Patents = 20

% Expired Patents = 5.0

Forward Citations = 196

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45 inventors (with patents filed for the assignee):

Akira Makihara (6 out of 6 patents)

Takahiko Kijima (5 out of 5 patents)

Edward Frederick Ezell (3 out of 6 patents)

4. Shigeki Hayashi (3 out of 19 patents)

5. Yoshiro Matsumoto (3 out of 3 patents)

6. Junichi Nishizawa (3 out of 48 patents)

7. Yasuyuki Kamei (2 out of 2 patents)

8. Minoru Sasabe (2 out of 3 patents)

9. Toshio Nagatsuka (2 out of 2 patents)

10. Taichi Tagawa (2 out of 3 patents)

11. Shigeo Matsui (2 out of 2 patents)

12. Hiroshi Nakamura (1 out of 45 patents)

13. Tadahiro Ohmi (1 out of 201 patents)

14. Yoshihiko Kawai (1 out of 24 patents)

15. Ken Ohmae (1 out of 1 patent)

20 patents: Sort by Forward Citations

1. 7025870 - Method for analyzing the oxygen concentration of a gas (2006-04-11),

2. 6165275 - Atmospheric gas generator for heat treatment (2000-12-25),

3. 616527 - Atmospheric gas generator for heat treatment (2000-12-26),

4. 6024922 - Method of controlling an oxygen analyzer of the Hersch galvanic type (2000-02-15),

5. 5971609 - Method of measuring the dew point or frost point of a gas having low (1999-10-26),

6. 5827949 - Method and system for measuring external leakage (1998-10-27),

7. 5667133 - Method and apparatus for forming an oxide passivation film on a weld (1997-09-16),

8. 5615954 - Apparatus for measuring the dew point or frost point of a gas having low (1997-04-01),

9. 5482371 - Method and apparatus for measuring the dew point and/or frost point of a (1996-01-09),

10. 5470154 - Method of cleaning the reflector mirror in an optical dew point meter (1995-11-28),

11. 5407492 - Process for forming passivated film (1995-04-18),

12. 5393403 - Probe using a mixed sub-electrode for measuring the activity of carbon (1995-02-28),

13. 5385611 - Apparatus for forming resin coating on surface of article having (1995-01-31),

14. 5295621 - Method of soldering using a special atmospheric gas (1994-03-22),

15. 5052818 - Method of and apparatus for measuring very low water content in gas (1991-10-01),

Company Overview

Osaka Sanso Kogyo Ltd. is a prominent company based in Osaka, Japan, specializing in the development and manufacturing of industrial gases and related equipment. The organization focuses on providing high-quality gas solutions for various sectors, including healthcare, electronics, and manufacturing. With a commitment to innovation, Osaka Sanso Kogyo engages in advanced research and technology to enhance the efficiency and safety of gas applications, contributing significantly to industrial processes and environmental sustainability.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

20 Patents

#321 in Osaka

#2,945 in Japan

#31,295 in the World

Osaka Sanso Kogyo Ltd.

Forward Citations = 196

45 inventors:

Akira Makihara (6 out of 6 patents)

Takahiko Kijima (5 out of 5 patents)

Edward Frederick Ezell (3 out of 6 patents)

4. Shigeki Hayashi (3 out of 19 patents)

5. Yoshiro Matsumoto (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Osaka Sanso Kogyo Ltd.. Retrieved from https://idiyas.com/company/osaka-sanso-kogyo

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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