logo

For the Inventor, By the Inventor

Toyonaka, Japan

Kohichi Aketa

This inventor holds 6 USPTO granted patents. Top assignee: Sumitomo Chemical Company, Limited. Active years: 1980-1982.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kohichi Aketa. Retrieved from https://idiyas.com/inventor/kohichi-aketa

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

USPTO Granted Patents = 6

% Patents Active = 100.0

Average Co-Inventor Count = 3.5

ph-index = 4

Forward Citations = 35(Granted Patents)


Location History:

  • Toyonaka, JP (1980 - 1982)
  • Kawanishi, JP (1981 - 1982)

Company Filing History:

goldMedal6 out of 6,960 
 
Sumitomo Chemical Company, Limited
 patents

Years Active: 1980-1982

Loading Chart...
6 patents (USPTO):Explore Patents
1. 4343953 - Method for preparing 4-hydroxy-3-methyl-2-(2-propynyl)-2-cyclopentenolone (1982-08-10),
2. 4312816 - Process for preparing optically active .alpha.-cyano-3-phenoxybenzyl (1982-01-26),
3. 4307036 - Method for preparing a mixture of stereoisomers of (1981-12-22),
4. 4293504 - Process for preparing optically active (1981-10-06),
5. 4279924 - Mixture of stereoisomers of .alpha.-cyano-3-(4-halogenophenoxy)benzyl (1981-07-21),
6. 4238406 - Method for preparing a mixture of stereoisomers of (1980-12-09),

Title: Kohichi Aketa: Innovator in Agricultural Chemistry

Introduction

Kohichi Aketa is a notable inventor based in Toyonaka, Japan. He has made significant contributions to the field of agricultural chemistry, holding a total of 6 patents. His innovative methods have paved the way for advancements in the production of useful chemical intermediates.

Latest Patents

Among his latest patents is a method for preparing 4-hydroxy-3-methyl-2-(2-propynyl)-2-cyclopentenolone. This invention relates to a novel method for producing cyclopentenolone, which serves as a valuable intermediate for agricultural chemicals. The process involves reacting an acetonedicarboxylic ester with 2-propynyl chloride in the presence of magnesium alkoxide and alkali iodide. This reaction leads to the formation of a mono-(2-propynyl)-substituted acetonedicarboxylic ester, which is then hydrolyzed under alkaline conditions. The hydrolyzed product is subsequently reacted with methylglyoxal to obtain a novel γ-diketone, which is then ring-closed under alkaline conditions.

Another significant patent involves a process for preparing optically active α-cyano-3-phenoxybenzyl. This process focuses on isomerizing optically active α-cyano-3-phenoxybenzyl 2-(4-chlorophenyl)isovalerate at the asymmetric carbon atom of the 3-phenoxybenzyl moiety. It also details a method for obtaining (S)-α-cyano-3-phenoxybenzyl (S)-2-(4-chlorophenyl)isovalerate from its racemic counterpart.

Career Highlights

Kohichi Aketa is currently associated with Sumitomo Chemical Company, Limited, where he continues to innovate in the field of chemical production. His work has been instrumental in developing methods that enhance the efficiency and effectiveness of agricultural chemicals.

Collaborations

He has collaborated with notable coworkers such as Yukio Suzuki and Kiyoshi Kasamatsu, contributing to the advancement of their shared goals in agricultural chemistry.

Conclusion

Kohichi Aketa's contributions to agricultural chemistry through his innovative patents highlight his role as a significant inventor in the field. His work continues to influence the production of essential chemical intermediates

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]
Loading…