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For the Inventor, By the Inventor

Tokyo, Japan

Showa Denko Kabushiki Kaisha


USPTO Granted Patents = 405



Trademarks = 14

Forward Citations = 4,695

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684 inventors (with patents filed for the assignee):

goldMedal Kazumi Naito (24 out of 112 patents)

silverMedal Takashi Udagawa (19 out of 74 patents)

bronzeMedal Hiroshi Sakai (14 out of 72 patents)

4.  Masahiro Ohmori (11 out of 27 patents)

5.  Nobuyuki Nagato (10 out of 26 patents)

6.  Takashi Ueshima (10 out of 14 patents)

7.  Yukio Kobayashi (9 out of 48 patents)

8.  Ryosuke Kamei (9 out of 18 patents)

9.  Atsushi Sakai (8 out of 90 patents)

10.  Hidenori Nakamura (8 out of 19 patents)

11.  Yuji Furuta (8 out of 27 patents)

12.  Jun Tanaka (8 out of 76 patents)

13.  Akira Sakawaki (7 out of 60 patents)

14.  Masahiko Maeda (7 out of 8 patents)

15.  Kazuhiro Omori (7 out of 29 patents)


Core Competencies:
Packaging Method
Group-III Nitride Semiconductor
Photo-Functional Powder
Niobium Powder
Perovskite Titanium-Type Composite Oxide
Magnetic Recording Medium
Solid Electrolytic Capacitor
Polishing Particle
Compound Semiconductor Device
Boron Phosphide-Based Semiconductor
High Activity Photo-Catalyst
Electrical Insulating Carbon Fiber

405 patents:

1. 8622234 - Packaging method and packaging container (2014-01-07),
2. 8293936 - Method for producing n-propyl acetate (2012-10-23),
3. 7332628 - Process for producing carbonyl fluoride (2008-02-19),
4. 7211836 - Group-III nitride semiconductor light-emitting device and production method thereof (2007-05-01),
5. 7169728 - Photo-functional powder and applications thereof (2007-01-30),
6. 7150911 - Electrical insulating vapor grown carbon fiber and method for producing the same, and use thereof (2006-12-19),
7. 7132006 - Niobium powder for capacitor, sintered body using the powder and capacitor using the same (2006-11-07),
8. 7091154 - Perovskite titanium-type composite oxide particle and production process thereof (2006-08-15),
9. 7087325 - Magnetic recording medium and production process thereof (2006-08-08),
10. 7084179 - Titanium oxide dispersion, thin film and process for producing these (2006-08-01),
11. 7060643 - Photo-functional powder and applications thereof (2006-06-13),
12. 7060205 - Solid electrolytic capacitor and method for producing the same (2006-06-13),
13. 7037355 - Niobium powder for capacitor, sintered body using the powder and capacitor using the same (2006-05-02),
14. 7037352 - Polishing particle and method for producing polishing particle (2006-05-02),
15. 7034330 - Group-III nitride semiconductor device, production method thereof and light-emitting diode (2006-04-25),
Showa Denko Kabushiki Kaisha is a leading Japanese chemical company operating in various sectors including petrochemicals, electronics, inorganic materials, advanced chemicals, and aluminum. With a focus on sustainability and innovation, Showa Denko aims to contribute to a sustainable society through its diverse range of products and services.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 23 2025

405 Patents

#191 in Tokyo

#420 in Japan

#2,246 in the World

...
Tokyo, Japan

Showa Denko Kabushiki Kaisha

Forward Citations = 4,695

684 inventors:

goldMedal Kazumi Naito (24 out of 112 patents)

silverMedal Takashi Udagawa (19 out of 74 patents)

bronzeMedal Hiroshi Sakai (14 out of 72 patents)

4.  Masahiro Ohmori (11 out of 27 patents)

5.  Nobuyuki Nagato (10 out of 26 patents)

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