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For the Inventor, By the Inventor

Osaka, Japan

Bunji Sawano

This inventor holds 5 USPTO granted patents. Top assignees: Yamamoto Chemicals, Inc., Mitsui Toatsu Chemicals, Incorporated. Active years: 1996-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Bunji Sawano. Retrieved from https://idiyas.com/inventor/bunji-sawano

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

Calculating rank
USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 4.8

ph-index = 2

Forward Citations = 7(Granted Patents)


Location History:

  • Minamikawachi-gun, JP (1997)
  • Osaka-fu, JP (1996 - 1998)
  • Osaka, JP (1997 - 1999)

Company Filing History:

goldMedal5 out of 73 
 
Yamamoto Chemicals, Inc.
 patents
silverMedal3 out of 1,379 
 
Mitsui Toatsu Chemicals, Incorporated
 patents
where one patent can have more than one assignee

Years Active: 1996-1999

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5 patents (USPTO):Explore Patents
1. 5990353 - Process for producing arylsulfonylureide compounds (1999-11-23),
2. 5710335 - Process for preparing 3-(N,N-disubstituted amino)phenol (1998-01-20),
3. 5691272 - Carboxylate and heat-sensitive recording material using same (1997-11-25),
4. 5627287 - Phthalide compound and a near infrared absorber and a recording material (1997-05-06),
5. 5559247 - Carboxylate and heat-sensitive recording material using same (1996-09-24),

Title: The Innovations of Bunji Sawano

Introduction

Bunji Sawano is a notable inventor based in Osaka-fu, Japan. He has made significant contributions to the field of chemistry, particularly in the development of arylsulfonylureide compounds and amino phenols. With a total of five patents to his name, Sawano's work has garnered attention for its practical applications in various industries.

Latest Patents

Among his latest patents, Sawano has developed a process for producing arylsulfonylureide compounds. This innovative method allows for the production of these compounds in high yield and high purity through a simple procedure. Additionally, he has disclosed a process for preparing 3-(N,N-disubstituted amino)phenol, which involves reacting resorcin with a primary amine. These advancements highlight his commitment to enhancing chemical processes and product quality.

Career Highlights

Throughout his career, Bunji Sawano has worked with reputable companies such as Yamamoto Chemicals, Inc. and Mitsui Toatsu Chemicals, Incorporated. His experience in these organizations has contributed to his expertise and the successful development of his patented technologies.

Collaborations

Sawano has collaborated with notable individuals in his field, including Mansuke Matsumoto and Nobuaki Sasaki. These partnerships have likely played a role in the refinement and success of his inventions.

Conclusion

Bunji Sawano's contributions to the field of chemistry through his patents and collaborations demonstrate his innovative spirit and dedication to advancing chemical processes. His work continues to impact the industry positively.

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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