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Showa Shell Sekiyu K.k.

USPTO Granted Patents = 46

EPO Patents = 1

Trademarks = 4

Forward Citations = 923

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77 inventors (with patents filed for the assignee):

Yoshiichi Suzuki (13 out of 29 patents)

Katsumi Kushiya (11 out of 11 patents)

Noriko Yamakawa (7 out of 15 patents)

4. Ichiro Kawamura (6 out of 13 patents)

5. Hideki Hakuma (5 out of 8 patents)

6. Takashi Hagiwara (5 out of 29 patents)

7. Hiroyuki Mogamiya (5 out of 13 patents)

8. Porponth Sichanugrist (5 out of 6 patents)

9. Tetsuo Tsuchiya (4 out of 6 patents)

10. Takahisa Kase (4 out of 5 patents)

11. Takahiro Ozaki (3 out of 8 patents)

12. Muneyori Tachiyuki (3 out of 3 patents)

13. Koichi Numazawa (3 out of 3 patents)

14. Shigenori Sakuma (3 out of 5 patents)

15. Tomoo Munakata (3 out of 3 patents)

Core Competencies:

Thin Film Solar Cell

CIS Based Solar Cell

Photovoltaic Device

Liquid Crystal Compounds

Gas Oil Desulfurization Catalyst

Electro-Luminescence Device

Quick Charging System

Durability Testing

Heat Exchanger Fouling Prevention

N-Type Window Layer

Lubricating Grease Composition

Ultra Fine Particles

46 patents: Sort by Forward Citations

1. 9450116 - Thin film solar cell and manufacturing method therefor (2016-09-20),

2. 9413183 - Quick charging system, control device, method of controlling amount of the stored electrical power, and program (2016-08-09),

3. 8691619 - Laminated structure for CIS based solar cell, and integrated structure and manufacturing method for CIS based thin-film solar cell (2014-04-08),

4. 8614114 - Process for producing light absorbing layer in CIS based thin-film solar cell (2013-12-24),

5. 8603853 - Method for manufacturing a solar cell module provided with an edge space (2013-12-10),

6. 8575478 - Integrated structure of CIS based solar cell (2013-11-05),

7. 8501519 - Method of production of CIS-based thin film solar cell (2013-08-06),

8. 8242795 - Method of testing durability of CIS based thin-film solar cell module (2012-08-14),

9. 8093096 - Method of successive high-resistance buffer layer/window layer (transparent conductive film) formation for CIS based thin-film solar cell and apparatus for successive film formation for practicing the method of successive film formation (2012-01-10),

10. 7989256 - Method for manufacturing CIS-based thin film solar cell (2011-08-02),

11. 7977139 - Method for manufacturing CIS based thin film solar cell device (2011-07-12),

12. 7960642 - CIS based thin-film photovoltaic module and process for producing the same (2011-06-14),

13. 7799212 - Method for preventing fouling of a heat exchanger for cooling residue from a hydrodesulfurization/hydrocracking process (2010-09-21),

14. 7629301 - Grease composition (2009-12-08),

15. 6092669 - Equipment for producing thin-film solar cell (2000-07-25),

Showa Shell Sekiyu K.K. is a Japanese energy company engaged in the refining, marketing, and distribution of petroleum products. The company operates a range of businesses, including oil refining, gas stations, lubricant production, electric power generation, and solar power generation. Showa Shell Sekiyu focuses on sustainable energy solutions and has been actively involved in the development of biofuels and other eco-friendly technologies.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

46 Patents

#734 in Tokyo

#1,770 in Japan

#14,689 in the World

Showa Shell Sekiyu K.k.

Forward Citations = 923

77 inventors:

Yoshiichi Suzuki (13 out of 29 patents)

Katsumi Kushiya (11 out of 11 patents)

Noriko Yamakawa (7 out of 15 patents)

4. Ichiro Kawamura (6 out of 13 patents)

5. Hideki Hakuma (5 out of 8 patents)

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