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Showa Denka K.k.

USPTO Granted Patents = 11

Forward Citations = 129

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32 inventors (with patents filed for the assignee):

Hitoshi Yokouchi (1 out of 6 patents)

Hisayuki Miki (1 out of 56 patents)

Masatoshi Kunisawa (1 out of 1 patent)

4. Kazumi Naito (1 out of 112 patents)

5. Takashi Udagawa (1 out of 74 patents)

6. Noritaka Muraki (1 out of 20 patents)

7. Munetaka Watanabe (1 out of 8 patents)

8. Akinori Sudoh (1 out of 1 patent)

9. Masataka Takeuchi (1 out of 1 patent)

10. Kazuhiro Omori (1 out of 29 patents)

11. Hitoshi Atobe (1 out of 12 patents)

12. Hirohiko Ohtsubo (1 out of 6 patents)

13. Yasushi Ohono (1 out of 1 patent)

14. Masahiro Ohmori (1 out of 27 patents)

15. Junichi Torisu (1 out of 4 patents)

11 patents: Sort by Forward Citations

1. 9478366 - Electric storage device and method for producing the same (2016-10-25),

2. 8080228 - Graphite material, carbon material for battery electrode, and battery (2011-12-20),

3. 7399994 - Transparent electrode (2008-07-15),

4. 7365366 - Boron phosphide-based semiconductor light-emitting device and production method thereof (2008-04-29),

5. 7012798 - Capacitor (2006-03-14),

6. 6955801 - High-purity fluorine gas, production and use thereof, and method for analyzing trace impurities in high-purity fluorine gas (2005-10-18),

7. 6504712 - Heat sinks for CPUs for use in personal computers (2003-01-07),

8. 5188956 - Thermostable amylase (1993-02-23),

9. 5000760 - CBN abrasive-grains, method for producing the same, and grinding wheel (1991-03-19),

10. 4879192 - Secondary cell (1989-11-07),

11. 4278820 - Process for preparing monoalkylene glycol monoethers (1981-07-14),

Showa Denko K.K. is a leading Japanese chemical company, specializing in the production of chemicals, industrial gases, and electronic materials. With a history dating back to 1908, the company has a rich legacy of innovation and a strong reputation for quality and reliability. Showa Denko's diverse product portfolio caters to a wide range of industries, including electronics, automotive, and healthcare, with a focus on sustainability and environmental responsibility.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

11 Patents

#1,591 in Tokyo

#4,045 in Japan

#50,229 in the World

Showa Denka K.k.

Forward Citations = 129

32 inventors:

Hitoshi Yokouchi (1 out of 6 patents)

Hisayuki Miki (1 out of 56 patents)

Masatoshi Kunisawa (1 out of 1 patent)

4. Kazumi Naito (1 out of 112 patents)

5. Takashi Udagawa (1 out of 74 patents)

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