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For the Inventor, By the Inventor

Himeji, Japan

Yasuteru Kajikawa

This inventor holds 18 USPTO granted patents and 6 published patent applications, primarily in Chemical Production. Top assignees: Daicel Chemical Industries, Ltd., Daicel Corporation, Osaka University. Active years: 1997-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuteru Kajikawa. Retrieved from https://idiyas.com/inventor/yasuteru-kajikawa

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

USPTO Granted Patents = 18 

% Patents Active = 77.8

Average Co-Inventor Count = 2.7

ph-index = 4

Forward Citations = 82(Granted Patents)


Location History:

  • Hyogo, JP (1997 - 1998)
  • Himeji, JP (2003 - 2022)

Company Filing History:

goldMedal9 out of 1,165 
 
Daicel Chemical Industries, Ltd.
 patents
silverMedal9 out of 696 
 
Daicel Corporation
 patents
bronzeMedal3 out of 1,044 
 
Osaka University
 patents
where one patent can have more than one assignee

Years Active: 1997-2026

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Areas of Expertise:
1,3-Butylene Glycol
Acetic Acid
Aliphatic Copolyester
Hydrogenation Catalyst
Olefin Production
Dicarboxylic Acids
Organic Compound Oxidation
Silanol Compound
Cyclic N-Hydroxy Imide
Alcohol Production
Ether Production
Reduction Reaction
18 patents (USPTO):Explore Patents
1. 12728083 - 1,3-butylene glycol product (2026-09-08),
2. 12577186 - Method for producing ether (2026-03-17),
3. 12521328 - 1,3-butylene glycol product (2026-01-13),
4. 12458571 - 1,3-butylene glycol product (2025-11-04),
5. 12410109 - Method for producing olefin and olefination reaction catalyst (2025-09-09),
6. 12172949 - Method for producing alcohol (2024-12-24),
7. 11505460 - Method for producing silanol compound and hydrogen (2022-11-22),
8. 11040334 - Catalyst for reduction reaction of 3,4-dihydroxytetrahydrofuran, and method for producing 3,4-dihydroxytetrahydrofuran reduced product (2021-06-22),
9. 10751704 - Hydrogenation reaction catalyst for 1,4-anhydroerythritol, method for producing 3-hydroxytetrahydrofuran, and method for producing 1,3-butane diol (2020-08-25),
10. 8217182 - Process for producing cyclic N-hydroxy imide compounds (2012-07-10),
11. 7910749 - Methods for oxidizing organic compounds (2011-03-22),
12. 7582774 - Process for producing cyclic N-hydroxy imide compounds (2009-09-01),
13. 7371444 - Aliphatic copolyester resin, a preparation method, an aliphatic polyester resin composition, uses thereof, a coating composition, a particle-state composition for agriculture and gardening coated by degradable layer (2008-05-13),
14. 7220469 - Aliphatic copolyester resin, a preparation method, an aliphatic polyester resin composition, uses thereof, a coating composition, a particle-state composition for agriculture and gardening coated by degradable layer (2007-05-22),
15. 7015356 - Process for producing dicarboxylic acids (2006-03-21),

Title: Yasuteru Kajikawa: Innovator in Chemical Engineering

Introduction

Yasuteru Kajikawa is a prominent inventor based in Himeji, Japan. He has made significant contributions to the field of chemical engineering, particularly in the development of high-purity chemical products and innovative production methods. With a total of 18 patents to his name, Kajikawa's work has had a notable impact on various industrial applications.

Latest Patents

One of Kajikawa's latest patents is for a high-purity 1,3-butylene glycol product. This product is colorless and odorless, ensuring it remains stable over time without discoloration or an increase in acid concentration when in a water-containing state. The patent specifies that the product has a peak ratio of 2000 ppm or lower, as determined by gas chromatographic analysis under specific conditions. Another significant patent involves a method for producing olefins and an olefination reaction catalyst. This method allows for the production of olefins with high selectivity and yield using vicinal diols as raw materials. The process occurs in the presence of a catalyst, which includes a carrier and specific metal oxides, under conditions that are substantially solvent-free.

Career Highlights

Throughout his career, Yasuteru Kajikawa has worked with notable companies such as Daicel Chemical Industries, Ltd. and Daicel Corporation. His experience in these organizations has allowed him to refine his expertise in chemical processes and product development.

Collaborations

Kajikawa has collaborated with talented individuals in his field, including Yuuichirou Hirai and Keisuke Ono. These partnerships have contributed to the advancement of his innovative projects and patents.

Conclusion

Yasuteru Kajikawa is a distinguished inventor whose work in chemical engineering continues to influence the industry. His patents reflect a commitment to innovation and excellence in product development.

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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