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Iwatani Sangyo Kabushiki Kaisha

USPTO Granted Patents = 26

Forward Citations = 309

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40 inventors (with patents filed for the assignee):

Etsuji Kawaguchi (4 out of 4 patents)

Mitsuyori Inoue (3 out of 3 patents)

Masayoshi Yanai (3 out of 3 patents)

4. Hiroaki Hasegawa (2 out of 21 patents)

5. Yoshifumi Nishiura (2 out of 5 patents)

6. Yoshio Yasukuri (2 out of 3 patents)

7. Nobuo Honami (2 out of 3 patents)

8. Yoshimasa Kidowaki (2 out of 3 patents)

9. Tsutomu Mizuno (2 out of 2 patents)

10. Haruhiko Murase (2 out of 2 patents)

11. Tomoaki Taira (2 out of 2 patents)

12. Fumio Kobayashi (2 out of 2 patents)

13. Hiroshi Takigawa (2 out of 2 patents)

14. Osamu Kurokoshi (2 out of 2 patents)

15. Tomio Nishitani (2 out of 2 patents)

26 patents: Sort by Forward Citations

1. D446991 - Portable gas burner (2001-08-29),

2. D426662 - Portable gas lantern (2000-06-13),

3. 5524386 - Method and apparatus for uniting a scion to a stock (1996-06-11),

4. 5522223 - Pulse tube refrigerator (1996-06-04),

5. 5515685 - Pulse tube refrigerator (1996-05-14),

6. 5414958 - Method and apparatus for uniting a scion to a stock (1995-05-16),

7. 5382214 - Method for fabricating a cardboard pallet and an apparatus for (1995-01-17),

8. 5327729 - Simplified apparatus for producing liquid nitrogen (1994-07-12),

9. 5267852 - Gas cylinder (1993-12-07),

10. 5230889 - Enriched nutritious food product comprising powder of ginseng and method (1993-07-27),

11. D336008 - Portable gas cooking stove (1993-06-01),

12. 5212953 - Apparatus for preventing evaporation of liquefied gas in liquefied gas (1993-05-25),

13. 5168710 - Slush hydrogen production apparatus (1992-12-08),

14. 4944324 - Fuel gas supply equipment with abnormal offensive odor suppressing filter (1990-07-31),

15. D295598 - Gas lighter (1988-05-10),

Iwatani Sangyo Kabushiki Kaisha is a leading Japanese company specializing in the industrial gas, energy, chemicals, and food products sectors. With a history dating back to 1920, Iwatani has established a strong presence both domestically and internationally. The company is committed to providing innovative solutions and high-quality products to meet the needs of various industries.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

26 Patents

#5 in both of

#2,454 in Japan

#24,087 in the World

Iwatani Sangyo Kabushiki Kaisha

Forward Citations = 309

40 inventors:

Etsuji Kawaguchi (4 out of 4 patents)

Mitsuyori Inoue (3 out of 3 patents)

Masayoshi Yanai (3 out of 3 patents)

4. Hiroaki Hasegawa (2 out of 21 patents)

5. Yoshifumi Nishiura (2 out of 5 patents)

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