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For the Inventor, By the Inventor

Yokohama, Japan

Masaaki Ura

This inventor holds 9 USPTO granted patents. Top assignee: Mitsui Toatsu Chemicals, Incorporated. Active years: 1976-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaaki Ura. Retrieved from https://idiyas.com/inventor/masaaki-ura

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

USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 6.9

ph-index = 4

Forward Citations = 45(Granted Patents)


Location History:

  • Kamakura, JA (1976)
  • Yokohama, JA (1977)
  • Yokohama, JP (1981 - 1983)
  • Kanagawa, JP (1985)
  • Omuta, JP (1994)

Company Filing History:

goldMedal9 out of 1,379 
 
Mitsui Toatsu Chemicals, Incorporated
 patents

Years Active: 1976-1994

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9 patents (USPTO):Explore Patents
1. 5296017 - Method and apparatus for concentrating chlorine gas (1994-03-22),
2. 4515628 - Diphenyl ether derivatives and herbicides containing same (1985-05-07),
3. 4385189 - Diphenyl ethers (1983-05-24),
4. 4323389 - Herbicidal compounds and compositions (1982-04-06),
5. 4308051 - Tetrahydrofuran derivatives (1981-12-29),
6. 4277624 - Process for preparing diphenyl ethers (1981-07-07),
7. 4264777 - Herbicidal diphenyl ether compound (1981-04-28),
8. 4062896 - Nitro-diphenyl ethers (1977-12-13),
9. 3969102 - Herbicides (1976-07-13),

Title: Masaaki Ura: Innovator in Chlorine Gas Concentration and Herbicide Development

Introduction

Masaaki Ura is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the fields of chemical engineering and herbicide development. With a total of 9 patents to his name, Ura's work has had a substantial impact on both industrial processes and agricultural practices.

Latest Patents

One of Ura's latest patents is a method and apparatus for concentrating chlorine gas. This innovative approach utilizes a pressure swing adsorption method to alternately repeat adsorbing and desorbing operations. By employing one or more adsorption towers packed with an adsorbent, Ura's method effectively purifies chlorine gas, resulting in a high-purity concentrated product. Additionally, the process generates an exhaust gas that contains virtually no chlorine gas, thereby minimizing environmental impact. Another notable patent involves novel diphenyl ether derivatives and herbicides containing these compounds. These derivatives, particularly 2-nitro-5 (nucleus-substituted phenoxy) phenylhydrazine derivatives, are recognized for their high herbicidal activity and residual efficacy, making them valuable in agricultural applications.

Career Highlights

Masaaki Ura is currently associated with Mitsui Toatsu Chemicals, Incorporated, where he continues to innovate and develop new technologies. His work has not only advanced the field of chemical engineering but has also contributed to sustainable agricultural practices.

Collaborations

Ura has collaborated with notable colleagues, including Takeo Yoshimoto and Teruhiko Toyama. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Masaaki Ura's contributions to the fields of chlorine gas concentration and herbicide development exemplify his commitment to innovation. His patents reflect a dedication to improving industrial processes and agricultural practices, making him a significant figure in his field.

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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