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Nippon Valqua Industries, Ltd.

USPTO Granted Patents = 57

CIPO Patents = 5

EPO Patents = 8

Trademarks = 15

Forward Citations = 637

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97 inventors (with patents filed for the assignee):

Akira Muramatsu (8 out of 8 patents)

Yasushi Aburatani (8 out of 8 patents)

Toshikiyo Komazawa (7 out of 7 patents)

4. Tatsuo Takamure (7 out of 7 patents)

5. Ippei Nakagawa (5 out of 22 patents)

6. Tsutomu Yoshida (5 out of 21 patents)

7. Kazuaki Tsuji (5 out of 5 patents)

8. Yasuyuki Shirai (4 out of 37 patents)

9. Tadahiro Ohmi (4 out of 201 patents)

10. Hirohisa Imada (3 out of 4 patents)

11. Masayuki Noguchi (3 out of 14 patents)

12. Nobuhiro Yoshida (2 out of 26 patents)

13. Masamichi Iwaki (2 out of 4 patents)

14. Tomoaki Yokota (2 out of 2 patents)

15. Shinya Kurokawa (2 out of 2 patents)

Core Competencies:

Composite Seal

Fluorine Rubber Composition

Hydrophilic Sheet

Thermally Conductive Resin

Metal Gasket

Porous PTFE Layer

Sealing Material

Diffusion Film

Gland Packing

Functional Molded Article

Gate Valve

57 patents: Sort by Forward Citations

1. D822181 - Composite seal (2018-07-03),

2. D821552 - Composite seal (2018-06-26),

3. D819187 - Seal (2018-05-29),

4. D818089 - Composite seal (2018-05-15),

5. 9908980 - Fluorine rubber composition, crosslinked rubber molded body and method for producing same (2018-03-06),

6. 9892945 - Composite seal (2018-02-13),

7. 9890498 - Hydrophilic sheet and process for producing the same (2018-02-13),

8. 9859064 - Method for producing activated carbon sheet and method for improving impregnation of activated carbon sheet with electrolyte solution (2018-01-02),

9. 9688896 - Thermally conductive resin composition and thermally conductive sheet including the same (2017-06-27),

10. 9611940 - Gate valve (2017-04-04),

11. 9587744 - Sealing material (2017-03-07),

12. 9447881 - Seal material (2016-09-20),

13. 9441107 - Shaped product suppressed in bleeding and production process therefor (2016-09-13),

14. 9321212 - Filled fluororesin sheet, process for producing the same, and gasket (2016-04-26),

15. D754308 - Composite sealing material (2016-04-19),

NIPPON VALQUA INDUSTRIES, LTD. is a leading manufacturer of industrial sealing solutions. With a rich history of over 100 years, the company specializes in designing and producing high-quality gaskets, packings, and sealing materials for various industries such as automotive, energy, and chemical. NIPPON VALQUA INDUSTRIES, LTD. is committed to providing innovative and reliable sealing solutions to meet the evolving needs of its global customers.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

57 Patents

#649 in Tokyo

#1,540 in Japan

#12,152 in the World

Nippon Valqua Industries, Ltd.

Forward Citations = 637

97 inventors:

Akira Muramatsu (8 out of 8 patents)

Yasushi Aburatani (8 out of 8 patents)

Toshikiyo Komazawa (7 out of 7 patents)

4. Tatsuo Takamure (7 out of 7 patents)

5. Ippei Nakagawa (5 out of 22 patents)

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