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Research Association for Residual Oil Processing

USPTO Granted Patents = 16

Forward Citations = 180

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41 inventors (with patents filed for the assignee):

Ryuichiro Iwamoto (4 out of 11 patents)

Kinya Tawara (3 out of 6 patents)

Satoshi Nakai (3 out of 6 patents)

4. Teruo Suzuka (3 out of 9 patents)

5. Shirou Aizawa (3 out of 8 patents)

6. Yukio Inoue (3 out of 5 patents)

7. Akira Iino (2 out of 9 patents)

8. Kazushi Usui (2 out of 14 patents)

9. Ikusei Nakamura (2 out of 2 patents)

10. Takashi Ino (2 out of 2 patents)

11. Tomonori Shioiri (2 out of 2 patents)

12. Kenji Mori (1 out of 6 patents)

13. Hiroshi Aida (1 out of 19 patents)

14. Shigenori Nakashizu (1 out of 9 patents)

15. Tomohiro Yoshinari (1 out of 10 patents)

16 patents: Sort by Forward Citations

1. 5338437 - Method for hydrocracking a heavy hydrocarbon oil utilizing a faujasite (1994-08-16),

2. 5207893 - Hydrocracking process employing a novel iron-containing aluminosilicate (1993-05-04),

3. 5141737 - Iron-containing aluminosilicate (1992-08-25),

4. 5139984 - Faujasite-type aluminosilicates, a method of producing the same, and (1992-08-18),

5. 4981832 - Catalyst composition for hydrogenation of heavy hydrocarbon oil and (1991-01-01),

6. 4836909 - Process of thermally cracking heavy petroleum oil (1989-06-06),

7. 4732886 - Hydrogen treating catalyst for hydrodesulfurization-cracking of mineral (1988-03-22),

8. 4622127 - Method for the hydrogenation treatment of a heavy hydrocarbon oil (1986-11-11),

9. 4585748 - Crystalline catalyst compositions for the conversion of hydrocarbons (1986-04-29),

10. 4556478 - Hydrocarbon conversion process and catalyst composition (1985-12-03),

11. 4515902 - Hydrocarbon conversion catalyst and process for preparing same (1985-05-07),

12. 4446008 - Process for hydrocracking of heavy oils with iron containing (1984-05-01),

13. 4421635 - Process for simultaneously cracking heavy hydrocarbons into light oils (1983-12-20),

14. 4420332 - Process for the production of reduced iron and thermal cracking of heavy (1983-12-13),

15. 4399023 - Process for simultaneously cracking heavy hydrocarbons into light oils (1983-08-16),

Company Overview

The Research Association for Residual Oil Processing is a prominent organization based in Tokyo, Japan, dedicated to advancing technologies related to the processing and utilization of residual oils. This association focuses on research and development initiatives that enhance the efficiency and sustainability of oil processing methods. By fostering collaboration among industry stakeholders, it aims to drive innovation in refining processes, promote best practices, and contribute to the overall advancement of energy resource management.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

16 Patents

#1,500 in Tokyo

#3,343 in Japan

#37,868 in the World

Research Association for Residual Oil Processing

Forward Citations = 180

41 inventors:

Ryuichiro Iwamoto (4 out of 11 patents)

Kinya Tawara (3 out of 6 patents)

Satoshi Nakai (3 out of 6 patents)

4. Teruo Suzuka (3 out of 9 patents)

5. Shirou Aizawa (3 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Research Association for Residual Oil Processing. Retrieved from https://idiyas.com/company/research-association-for-residual-oil-processing

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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