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Iwatani Corporation

USPTO Granted Patents = 33

% Expired Patents = 12.1

EPO Patents = 4

Trademarks = 5

Forward Citations = 60

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65 inventors (with patents filed for the assignee):

Koichi Izumi (12 out of 12 patents)

Kunihiko Koike (11 out of 13 patents)

Naohisa Makihira (7 out of 7 patents)

4. Takehiko Senoo (7 out of 8 patents)

5. Yu Yoshino (6 out of 7 patents)

6. Sadaki Nakamura (6 out of 6 patents)

7. Goichi Inoue (5 out of 7 patents)

8. Tadashi Shojo (4 out of 4 patents)

9. Kazuya Dobashi (4 out of 26 patents)

10. Kenichiro Inada (4 out of 4 patents)

11. Toshiki Manabe (3 out of 3 patents)

12. Masahiro Furutani (3 out of 3 patents)

13. Takeshi Sakamoto (2 out of 88 patents)

14. Takafumi Ogiwara (2 out of 21 patents)

15. Takehiko Orii (2 out of 63 patents)

Core Competencies:

Gas Cluster Processing

Ozone Concentration

Substrate Cleaning

Semiconductor Manufacturing

Hydrogen Gas Dispenser

Cartridge-Type Gas Grill

Suction Device

Cutting Method

Calcium Phosphate Complex

Film Forming Method

Combustible Gas

Igniter

33 patents: Sort by Forward Citations

1. 12172198 - Gas cluster processing device and gas cluster processing method (2024-12-24),

2. 11542585 - Method for treating inner wall surface of treatment object (2023-01-03),

3. 11482455 - Cutting method of workpiece by forming reformed region and dry etching process (2022-10-25),

4. 11380586 - Cutting method (2022-07-05),

5. 11371656 - Inspection apparatus for hydrogen gas dispenser (2022-06-28),

6. 11267021 - Gas cluster processing device and gas cluster processing method (2022-03-08),

7. 11130092 - Method for concentrating ozone gas and apparatus for concentrating ozone gas (2021-09-28),

8. 11123679 - Method for concentrating ozone gas and apparatus for concentrating ozone gas (2021-09-21),

9. 10597296 - Method for supplying ozone gas and system for supplying ozone gas (2020-03-24),

10. 9869614 - Sampling apparatus and sampling method (2018-01-16),

11. 9841143 - Suction device and suction method (2017-12-12),

12. 9638425 - Cartridge-type gas grill (2017-05-02),

13. 9533268 - Method and apparatus for supplying mixed gas (2017-01-03),

14. 9447502 - Calcium phosphate complex, and method for production thereof (2016-09-20),

15. 9425071 - Film forming method (2016-08-23),

Company Overview

Iwatani Corporation, headquartered in Osaka, Japan, specializes in the development and manufacturing of gas-related products and equipment. The company is a leader in the production of liquefied petroleum gas (LPG) and offers a diverse range of products including gas appliances, industrial equipment, and energy solutions. With a strong focus on innovation, Iwatani is committed to advancing technologies that enhance energy efficiency and sustainability, catering to both domestic and international markets.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

33 Patents

#233 in Osaka

#2,201 in Japan

#20,130 in the World

Iwatani Corporation

Forward Citations = 60

65 inventors:

Koichi Izumi (12 out of 12 patents)

Kunihiko Koike (11 out of 13 patents)

Naohisa Makihira (7 out of 7 patents)

4. Takehiko Senoo (7 out of 8 patents)

5. Yu Yoshino (6 out of 7 patents)

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

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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