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For the Inventor, By the Inventor

Hirakata, Japan

Masao Nishikuri

This inventor holds 8 USPTO granted patents. Top assignee: Sumitomo Chemical Company, Limited. Active years: 1976-1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masao Nishikuri. Retrieved from https://idiyas.com/inventor/masao-nishikuri

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 = 3.5

ph-index = 3

Forward Citations = 21(Granted Patents)


Location History:

  • Hirakata, JA (1976 - 1978)
  • Hirakata, JP (1981 - 1987)
  • Yokohama, JP (1989)

Company Filing History:

goldMedal8 out of 6,961 
 
Sumitomo Chemical Company, Limited
 patents

Years Active: 1976-1989

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8 patents (USPTO):Explore Patents
1. 4826505 - Monoazo pyridone compounds and application thereof for dyeing of (1989-05-02),
2. 4710320 - Method for producing 1-amino-2-phenoxy-4-hydroxyanthraquinones (1987-12-01),
3. 4690686 - Light-fast yellow disperse dye composition for polyester (1987-09-01),
4. 4607102 - Dioxazine fiber reactive compound (1986-08-19),
5. 4331584 - Styryl compounds and coloring synthetic resins therewith (1982-05-25),
6. 4292247 - Process for producing anthraquinone intermediates (1981-09-29),
7. 4089648 - Process for dry dyeing synthetic or semi-synthetic, or natural materials (1978-05-16),
8. 3980678 - Anthraquinone disperse dyes (1976-09-14),

Title: The Innovative Contributions of Masao Nishikuri

Introduction

Masao Nishikuri is a prominent inventor based in Hirakata, Japan. He has made significant contributions to the field of dye chemistry, holding a total of 8 patents. His work focuses on developing innovative compounds that enhance dyeing processes for various materials.

Latest Patents

Nishikuri's latest patents include the development of monoazo pyridone compounds, which are useful for dyeing hydrophobic fiber materials. These compounds provide dyed products with deep, fast, and brilliant colors ranging from greenish yellow to orange. Another notable patent involves a method for producing 1-amino-2-phenoxy-4-hydroxyanthraquinones, which serve as red disperse dyes for polyester fibers. This method allows for high yield and purity, making it an essential process in dye production.

Career Highlights

Masao Nishikuri is associated with Sumitomo Chemical Company, Limited, where he has been able to apply his expertise in dye chemistry. His innovative approaches have contributed to advancements in the dyeing industry, particularly in the production of high-quality dyes.

Collaborations

Throughout his career, Nishikuri has collaborated with notable colleagues, including Hirohito Kenmochi and Akira Takeshita. These collaborations have further enhanced his research and development efforts in the field of dye chemistry.

Conclusion

Masao Nishikuri's contributions to dye chemistry through his patents and collaborations have significantly impacted the industry. His innovative work continues to influence the development of new dyeing processes and materials.

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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