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For the Inventor, By the Inventor

Ube, Japan

Takashi Doi

This inventor holds 18 USPTO granted patents and 5 EPO patents, primarily in Chemical Production. Top assignees: Ube Industries, Inc., Ems-Chemie Ag. Active years: 1998-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Doi. Retrieved from https://idiyas.com/inventor/takashi-doi-wjl3jvm3

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 = 72.2

 

Average Co-Inventor Count = 6.1

ph-index = 3

Forward Citations = 21(Granted Patents)


Location History:

  • Yamaguchi, JP (1998 - 2013)
  • Ube, JP (1998 - 2015)

Company Filing History:

goldMedal18 out of 1,432 
 
Ube Industries, Inc.
 patents
silverMedal1 out of 62 
 
Ems-Chemie Ag
 patents
where one patent can have more than one assignee

Years Active: 1998-2015

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Areas of Expertise:
Alkanediol
1,5-Pentanediol
Aromatic Aldehyde
Cyclododecanone
Diaryl Carbonate
Laurolactam
Decarbonylation
Synthesis Process
Quality Retention
Production Method
18 patents (USPTO):Explore Patents
1. 9051234 - Method for producing alkanediol (2015-06-09),
2. 8940946 - Method for producing high-purity 1,5-pentanediol (2015-01-27),
3. 8618335 - Process for preparing aromatic aldehyde compound (2013-12-31),
4. 8450508 - Method of retaining the quality of 2-methyl-3-(3,4-methylenedioxyphenyl)propanal and process for producing the same (2013-05-28),
5. 8344166 - Method of retaining the quality of 2-methyl-3-(3,4-methylenedioxyphenyl) propanal and process for producing the same (2013-01-01),
6. 8338589 - Process for producing laurolactam (2012-12-25),
7. 8168809 - 2-methyl-3-(3,4-methylenedioxyphenyl)propanal, and method for production thereof (2012-05-01),
8. 8039649 - Method of retaining the quality of 2-methyl-3-(3,4-methylenedioxyphenyl)propanal and process for producing the same (2011-10-18),
9. 6861563 - Process for preparation of cyclododecanone (2005-03-01),
10. 6518461 - Method of continuously producing a cyclododecanone compound (2003-02-11),
11. 6472498 - Diaryl carbonate product and production of polycarbonate (2002-10-29),
12. 6417404 - Process for continuously producing a cyclododecanone compound (2002-07-09),
13. 6388140 - Method and producing cyclododecanone compound (2002-05-14),
14. 5892091 - Catalyst for decarbonylation reaction (1999-04-06),
15. 5892089 - Process for preparing diaryl carbonate (1999-04-06),

Title: Takashi Doi: Innovator in Alkanediol Production

Introduction

Takashi Doi is a prominent inventor based in Ube, Japan. He has made significant contributions to the field of chemical engineering, particularly in the production of alkanediols. With a total of 18 patents to his name, Doi has established himself as a key figure in innovative chemical processes.

Latest Patents

Doi's latest patents include a method for producing alkanediol, specifically 1,5-pentanediol. This method involves reacting a cyclic ether group-containing methanol, such as tetrahydrofurfuryl alcohol, using a non-chromium catalyst. The process aims to achieve high reaction selectivity and efficiency. Another notable patent is for a method of producing high-purity 1,5-pentanediol. This method includes a hydrogenolysis reaction of tetrahydrofurfuryl alcohol in the presence of a copper-containing catalyst, followed by a distillation process to obtain high-purity product.

Career Highlights

Throughout his career, Doi has worked with notable companies such as Ube Industries, Inc. and Ems-Chemie AG. His work has focused on developing efficient methods for chemical production, contributing to advancements in the industry.

Collaborations

Doi has collaborated with esteemed colleagues, including Satoru Fujitsu and Ryoji Sugise. These partnerships have fostered innovation and have been instrumental in the development of his patented methods.

Conclusion

Takashi Doi's contributions to the field of chemical engineering, particularly in alkanediol production, highlight his innovative spirit and dedication to advancing technology. His patents reflect a commitment to efficiency and purity in chemical processes.

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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