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For the Inventor, By the Inventor

Fukuoka, Japan

Akihiro Tamaki

This inventor holds 12 USPTO granted patents. Top assignee: Mitsui Toatsu Chemicals, Incorporated. Active years: 1986-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Akihiro Tamaki. Retrieved from https://idiyas.com/inventor/akihiro-tamaki

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

USPTO Granted Patents = 12

% Patents Active = 100.0

Average Co-Inventor Count = 3.9

ph-index = 6

Forward Citations = 146(Granted Patents)


Location History:

  • Ohmuta, JP (1986 - 1990)
  • Omuta, JP (1987 - 1990)
  • Fukuoka, JP (1988 - 1994)
  • Yokohama, JP (1997)

Company Filing History:

goldMedal12 out of 1,379 
 
Mitsui Toatsu Chemicals, Incorporated
 patents

Years Active: 1986-1997

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12 patents (USPTO):Explore Patents
1. 5616806 - Process for preparing high-purity aniline (1997-04-01),
2. 5283365 - Process for preparing high-purity aniline (1994-02-01),
3. 4978792 - Process for producing aminobenzylamine (1990-12-18),
4. 4952731 - Process for producing diphenylamines or N,N'-diphenyl-phenylenediamines (1990-08-28),
5. 4922005 - Preparation process of hexamethylene (1990-05-01),
6. 4871875 - Process for producing diphenylamines or N,N'-diphenylphenylenediamines (1989-10-03),
7. 4804783 - Process for producing diphenylamines or N,N'-diphenyl-phenylenediamines (1989-02-14),
8. 4780522 - Sulfur-containing polyurethane base lens resin (1988-10-25),
9. 4731453 - Process for producing 1, 3-dialkyl-2-imidazolidinone (1988-03-15),
10. 4689387 - S-alkyl thiocarbamate base lens resin (1987-08-25),
11. 4680369 - Sulfur-containing polyurethane base lens resin (1987-07-14),
12. 4625062 - Process for producing 4-alkoxyanilines (1986-11-25),

Title: Akihiro Tamaki: Innovator in High-Purity Aniline Production

Introduction

Akihiro Tamaki is a prominent inventor based in Fukuoka, Japan. He has made significant contributions to the field of chemical engineering, particularly in the production of high-purity aniline. With a total of 12 patents to his name, Tamaki's work has had a substantial impact on industrial processes.

Latest Patents

Tamaki's latest patents focus on innovative processes for preparing high-purity aniline. One of his notable inventions involves a continuous preparation method that hydrogenates nitrobenzene using a palladium or palladium-platinum catalyst. This process is characterized by the suspension of the catalyst in an aniline solvent and the reaction occurring at temperatures between 150°C and 250°C. The method ensures that aniline and water formed during the reaction are continuously distilled off, while maintaining a low concentration of nitrobenzene in the reaction solution. Additionally, a zinc compound is introduced as a promotor, enhancing the efficiency of the process.

Career Highlights

Tamaki is currently employed at Mitsui Toatsu Chemicals, Incorporated, where he continues to develop innovative chemical processes. His expertise in the field has led to advancements that improve the quality and efficiency of aniline production.

Collaborations

Throughout his career, Tamaki has collaborated with notable colleagues, including Teruyuki Nagata and Nobuyuki Kajimoto. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Akihiro Tamaki's contributions to the field of chemical engineering, particularly in the production of high-purity aniline, highlight his role as a leading inventor. His innovative processes and collaborations with esteemed colleagues continue to shape the industry.

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]
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