Takuji Itoh

This inventor holds 17 USPTO granted patents, primarily in Catalyst Technology. Top assignees: Toa Nenryo Kogyo Kabushiki Kaisha, Tonen Corporation. Active years: 1976-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takuji Itoh. Retrieved from https://idiyas.com/inventor/takuji-itoh

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

USPTO Granted Patents = 17

% Patents Active = 100.0

Average Co-Inventor Count = 3.3

ph-index = 12

Forward Citations = 328(Granted Patents)

Location History:

Ohi, JA (1976 - 1977)
Sayama, JA (1977)
Sayama, JP (1978 - 1989)
Ooi, JP (1990)
Saitama, JP (1985 - 1992)

Company Filing History:

16 out of 220

Toa Nenryo Kogyo Kabushiki Kaisha

Years Active: 1976-1992

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Areas of Expertise:

Hydrotreating Catalysts

Hydrogenation Process

Nitrogen Oxide Reduction

Catalyst Carrier Moldings

Immobilized Electrolyte Membrane

Hydrocarbon Conversion

Flue Gas Treatment

Petroleum Wax Hydrofining

Inorganic Polysilazane

Lubricating Oils

Catalyst Production

Heat-Resistant Catalysts

17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5094993 - Hydrotreating catalysts (1992-03-10),

2. 4959338 - Heat-resistant catalyst carrier moldings and catalysts for combustion (1990-09-25),

3. 4849311 - Immobilized electrolyte membrane (1989-07-18),

4. 4840778 - Inorganic polysilazane and method of producing the same (1989-06-20),

5. 4497909 - Hydrogenation process (1985-02-05),

6. 4218308 - Hydrogenation catalyst (1980-08-19),

7. 4199555 - Catalyst for reducing nitrogen oxides (1980-04-22),

8. 4186078 - Catalyst and process for hydrofining petroleum wax (1980-01-29),

9. 4139494 - Catalyst for hydrofining petroleum wax (1979-02-13),

10. 4134856 - Catalyst for hydro-refining hydrocarbon oils (1979-01-16),

11. 4124536 - Catalyst for reducing nitrogen oxides (1978-11-07),

12. 4052337 - Catalyst for reduction of nitrogen oxides and process for preparing same (1977-10-04),

13. 4049581 - Method for preparing hydrocarbon conversion catalyst using acid amide (1977-09-20),

14. 4020011 - Method for preparing hydrocarbon conversion catalyst (1977-04-26),

15. 4016241 - Process for reducing nitrogen oxides from flue gas (1977-04-05),

Title: Takuji Itoh: Innovator in Catalyst Technology

Introduction

Takuji Itoh is a prominent inventor based in Sayama, Japan. He has made significant contributions to the field of catalyst technology, holding a total of 17 patents. His work focuses on developing advanced materials that enhance the efficiency and effectiveness of chemical processes.

Latest Patents

Among his latest patents, Itoh has developed innovative hydrotreating catalysts. These catalysts are designed for hydrotreating hydrocarbonaceous oils and consist of a hydrogenative-active metal component supported on a carrier material. This carrier material is composed of approximately 20 to 60 weight percent of amorphous silica-alumina and 40 to 80 weight percent of crystalline alumina, which has an average crystallite size of 35 Å or less. Another notable invention is a heat-resistant catalyst carrier and catalyst carrier molding that includes silica and alumina. This invention ensures that the catalyst retains a large pore volume and specific surface area even under high-temperature and humidity conditions, while maintaining high reactivity with limited deactivation.

Career Highlights

Throughout his career, Takuji Itoh has worked with several notable companies, including Toa Nenryo Kogyo Kabushiki Kaisha and Tonen Corporation. His experience in these organizations has allowed him to refine his expertise in catalyst development and innovation.

Collaborations

Itoh has collaborated with several professionals in his field, including Satoshi Sakurada and Shohei Okano. These collaborations have contributed to the advancement of catalyst technologies and have fostered a spirit of innovation in their projects.

Conclusion

Takuji Itoh's contributions to catalyst technology have made a significant impact in the industry. His innovative patents and collaborations highlight his dedication to advancing chemical processes through effective catalyst solutions.

Profile summary based on public USPTO records.

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]