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For the Inventor, By the Inventor

Tokyo, Japan

Petroleum Energy Center


USPTO Granted Patents = 61



Forward Citations = 843

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156 inventors (with patents filed for the assignee):

goldMedal Hirokazu Takahashi (6 out of 121 patents)

silverMedal Osami Yokota (6 out of 11 patents)

bronzeMedal Tadao Nakatsuji (6 out of 31 patents)

4.  Akinori Hayashi (5 out of 31 patents)

5.  Hiromitsu Shimizu (5 out of 22 patents)

6.  Nobuyuki Hokari (5 out of 13 patents)

7.  Shinichi Inage (5 out of 6 patents)

8.  Masanori Suzuki (5 out of 64 patents)

9.  Jin Konishi (5 out of 5 patents)

10.  Yoshitaka Ishii (5 out of 5 patents)

11.  Ritsu Yasukawa (5 out of 5 patents)

12.  Shigeki Matsui (4 out of 30 patents)

13.  Shinichi Shirahama (4 out of 16 patents)

14.  Mitsunori Tabata (4 out of 8 patents)

15.  Kazushi Usui (4 out of 14 patents)


Core Competencies:
Catalytic Cracking
Hydrodesulfurization
Lubricant Composition
Gas Turbine Systems
Desulfurization Enzymes
Photocatalysts
Heavy Oil Treatment
Fluid Catalytic Cracking
High-Temperature Desulfurization
Aromatic Polyimides
Nitrogen Oxide Reduction
Gas Oil Desulfurization

61 patents:

1. 9861966 - Catalytic cracking catalyst, process for producing the same, and method of catalytic cracking of hydrocarbon oil (2018-01-09),
2. 9012380 - Lubricant base oil, lubricant composition for internal combustion engine and lubricant composition for driving force transmitting device (2015-04-21),
3. 8394745 - Lube base oil, process for production thereof, and lubricating oil composition (2013-03-12),
4. 8148285 - Method for manufacturing zeolite Y with aluminum and titanium inserted therein (2012-04-03),
5. 8105990 - Lube base oil, lubricating oil composition for internal combustion engine, and lubricating oil composition for drive transmission device (2012-01-31),
6. 7926288 - Reformed-fuel-burning gas turbine system and method of operating the same (2011-04-19),
7. 7838709 - Lubricating base oil and lubricating oil composition (2010-11-23),
8. 7776784 - Hydrodesulfurization catalyst and hydrodesulfurization process for gasoline fractions (2010-08-17),
9. 7707816 - Gas turbine system burning heavy-oil modified fuel and method of operating same (2010-05-04),
10. 7691774 - Hydrogenation desulfurization isomerization catalyst, process for producing the same and method of desulfurization isomerization for sulfurous hydrocarbon oil (2010-04-06),
11. 7658078 - System for reforming heavy oil, method therefor, and combined cycle power system (2010-02-09),
12. 7611676 - Method for producing gas turbine fuel, and method and system for generating electric power by gas turbine (2009-11-03),
13. 7594387 - Modified fuel burning gas turbine (2009-09-29),
14. 7591983 - Heavy oil treating method and heavy oil treating system (2009-09-22),
15. 7585677 - Method of evaluating corrosion resistance of material under ammonium bisulfide environment (2009-09-08),
Petroleum Energy Center is a leading global energy company, dedicated to providing reliable and efficient petroleum products and services. With years of experience in the industry, we are committed to delivering high-quality energy solutions that meet the needs of our customers. Our state-of-the-art facilities and advanced technology enable us to explore, produce, refine, and distribute petroleum products with utmost safety and sustainability. With a strong focus on innovation and customer satisfaction, we strive to be a trusted partner in the energy sector.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

61 Patents

#622 in Tokyo

#1,482 in Japan

#11,622 in the World

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Tokyo, Japan

Petroleum Energy Center

Forward Citations = 843

156 inventors:

goldMedal Hirokazu Takahashi (6 out of 121 patents)

silverMedal Osami Yokota (6 out of 11 patents)

bronzeMedal Tadao Nakatsuji (6 out of 31 patents)

4.  Akinori Hayashi (5 out of 31 patents)

5.  Hiromitsu Shimizu (5 out of 22 patents)

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