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Nippon Oil Seal Industry Co., Ltd.

USPTO Granted Patents = 25

Trademarks = 5

Forward Citations = 319

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42 inventors (with patents filed for the assignee):

Shohei Inoue (2 out of 14 patents)

Takeshi Jinnouchi (2 out of 18 patents)

Takeshi Miura (2 out of 4 patents)

4. Osamu Sudo (2 out of 2 patents)

5. Yasuo Mikami (2 out of 2 patents)

6. Tadamichi Takada (2 out of 2 patents)

7. Nobuyuki Miyazaki (2 out of 2 patents)

8. Masanori Yokokawa (2 out of 2 patents)

9. Tatsuaki Yukimasa (2 out of 2 patents)

10. Kenichi Yarimizu (1 out of 4 patents)

11. Shinji Nagasawa (1 out of 8 patents)

12. Noboru Matsushima (1 out of 9 patents)

13. Akira Nemoto (1 out of 8 patents)

14. Kikuo Ohura (1 out of 1 patent)

15. Nobuhito Fujita (1 out of 1 patent)

25 patents: Sort by Forward Citations

1. 4575104 - Radial type liquid seal with bend preventing means (1986-03-11),

2. 4550920 - Oil seal with main lip, subsidiary lip and dust lip (1985-11-05),

3. 4550486 - Method and apparatus for mounting oil seal in machine housing (1985-11-05),

4. 4531747 - Extended wear annular oil seal (1985-07-30),

5. 4468041 - Backup ring for hydraulic apparatus seals (1984-08-28),

6. 4437673 - Sealing device (1984-03-20),

7. 4306729 - Sealing material (1981-12-22),

8. 4287814 - Bellows apparatus (1981-09-08),

9. 4278261 - Sealing device (1981-07-14),

10. 4234196 - Roll neck sealing device (1980-11-18),

11. 4212476 - Hydrodynamic seal (1980-07-15),

12. 4195853 - Mechanical shaft seal (1980-04-01),

13. 4183289 - Bellows apparatus (1980-01-15),

14. 4179883 - Reed valve assembly (1979-12-25),

15. 4175332 - Method of measuring directional properties of surface of shafts (1979-11-27),

Nippon Oil Seal Industry Co., Ltd. manufactures and supplies high-quality oil seals, hydraulic seals, and other sealing products. With over 100 years of experience, the company is known for its expertise in sealing technology and focus on meeting customer needs. Nippon Oil Seal Industry Co., Ltd. serves various industries, including automotive, machinery, aerospace, and more. The company aims to provide reliable and innovative sealing solutions to enhance the performance and efficiency of their customers' applications.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

25 Patents

#1,045 in Tokyo

#2,515 in Japan

#24,950 in the World

Nippon Oil Seal Industry Co., Ltd.

Forward Citations = 319

42 inventors:

Shohei Inoue (2 out of 14 patents)

Takeshi Jinnouchi (2 out of 18 patents)

Takeshi Miura (2 out of 4 patents)

4. Osamu Sudo (2 out of 2 patents)

5. Yasuo Mikami (2 out of 2 patents)

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