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For the Inventor, By the Inventor

Nara, Japan

Katsumasa Otake

This inventor holds 8 USPTO granted patents. Top assignee: Sumitomo Chemical Company, Limited. Active years: 1985-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsumasa Otake. Retrieved from https://idiyas.com/inventor/katsumasa-otake

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

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 5

Forward Citations = 64(Granted Patents)


Company Filing History:

goldMedal8 out of 6,960 
 
Sumitomo Chemical Company, Limited
 patents

Years Active: 1985-1990

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8 patents (USPTO):Explore Patents
1. 4937326 - Reactive scarlet dyes having both monochlorotriazinyl and vinylsulfone (1990-06-26),
2. 4935500 - Metallized formazan compounds having two fiber reactive groups linked by (1990-06-19),
3. 4841031 - Reactive dye having both monochlorotriazinyl and vinylsulfone type (1989-06-20),
4. 4631341 - Anthraquinone compound having both monohalogenotriazinyl and (1986-12-23),
5. 4626589 - Organic dye compound having both pyridiniotriazinyl and vinylsulfone (1986-12-02),
6. 4551150 - Method for dyeing cellulose fiber material using fiber-reactive disazo (1985-11-05),
7. 4540418 - Reactive dye composition (1985-09-10),
8. 4511507 - Monoazo compound having both monochlorotriazinyl and vinylsulfone type (1985-04-16),

Title: The Innovative World of Katsumasa Otake

Introduction:

Katsumasa Otake, a visionary inventor based in Nara, Japan, has left a profound impact on the technological landscape with his exceptional creations and inventive spirit. With 8 patents to his name, Otake's drive for innovation has led him to develop groundbreaking solutions that push the boundaries of possibility.

Latest Patents:

Among his latest patents is a revolutionary reactive monoazo dye known as "Reactive scarlet dyes having both monochlorotriazinyl and vinylsulfone," aimed at enhancing the color properties of cellulose fiber materials. Additionally, Otake has introduced metallized formazan compounds with two fiber reactive groups, enabling deep blue dyeing with exceptional fastness qualities.

Career Highlights:

Having contributed significantly to the field of technology, Katsumasa Otake is a proud member of Sumitomo Chemical Company, Limited, where his inventive mind thrives. His work at Sumitomo Chemical Company, Limited, has been instrumental in driving forward innovative solutions that cater to a wide range of industries.

Collaborations:

In his pursuit of excellence, Otake has collaborated closely with esteemed coworkers such as Takashi Omura and Yutaka Kayane, pooling their expertise to further advance the realm of invention. Together, they have fostered an environment of creativity and shared knowledge, leading to remarkable breakthroughs in the field.

Conclusion:

In conclusion, Katsumasa Otake stands as a shining example of ingenuity and perseverance in the world of invention, leaving an indelible mark on the landscape of technology with his remarkable creations. His dedication to innovation and collaboration serves as an inspiration to aspiring inventors worldwide, showcasing the transformative power of visionary thinking and relentless pursuit of excellence in the realm of patents and inventions.

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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