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For the Inventor, By the Inventor

Kanagawa, Japan

Toshimitsu Hagiwara

This inventor holds 58 USPTO granted patents, primarily in Fragrance Chemistry (CPC class 430 ). Top assignees: Takasago International Corporation, Semiconductor Energy Laboratory Co., Ltd., Takasago Koryo Kogyo Kabushiki Kaisha (Takasago International. Active years: 1992-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshimitsu Hagiwara. Retrieved from https://idiyas.com/inventor/toshimitsu-hagiwara

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

USPTO Granted Patents = 58

% Patents Active = 79.3

Average Co-Inventor Count = 4.2

ph-index = 9

Forward Citations = 313(Granted Patents)

Forward Citations (Not Self Cited) = 303(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Tokyo, JP (1993 - 2000)
  • Yokohama, JP (1992 - 2004)
  • Hiratsuka, JP (1995 - 2005)
  • Kanagawa, JP (1993 - 2012)

Company Filing History:

goldMedal53 out of 511 
 
Takasago International Corporation
 patents
silverMedal4 out of 16,652 
 
Semiconductor Energy Laboratory Co., Ltd.
 patents
bronzeMedal2 out of 3 
 
Takasago Koryo Kogyo Kabushiki Kaisha (Takasago International
 patents
4. 1 out of 357 
 
Shindengen Electric Manufacturing Company Limited
 patents
5. 1 out of 18 
 
Yamanashi Electronics Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1992-2012

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Areas of Expertise:
Ceramide Composition
Fragrance Diffusivity
Chemical Resistance
Melanin Production Inhibitors
Liquid Crystal Structure
Aromatic Bleaching Agents
Optically Active Compounds
Ruthenium Catalysts
Electrophotographic Photoreceptors
Biodegradable Compositions
Diene Compounds
Charge-Transporting Materials
58 patents (USPTO):Explore Patents
1. 8313755 - Clear aqueous ceramide composition (2012-11-20),
2. 7538081 - Method and agent for enhancing diffusivity and long-lasting property of fragrance (2009-05-26),
3. 6930083 - Isomer composition excellent in chemical resistance containing optically active trans-1-(2,2,6-trimethylcyclohexyl)-2-buten-1-one and fragrance compositions containing the isomer composition (2005-08-16),
4. 6833481 - Process for producing 2-alkyl-2cyclopentenones (2004-12-21),
5. 6822121 - Production process of cyclohexenyl ketones (2004-11-23),
6. 6770618 - (1S,6R)-2,2,6-Trimethylcyclohexyl methyl ketone and/or (1R,6S)-2,2,6-trimethylcyclohexyl methyl ketone, process for producing the same, and perfume composition containing the same (2004-08-03),
7. 6759557 - Melanin production inhibitors and skincare products containing such inhibitors (2004-07-06),
8. 6645254 - Aromatic bleaching agent composition (2003-11-11),
9. 6570035 - Process for producing pivaloyl-acetic acid ester (2003-05-27),
10. 6548711 - Process for producing 2-vinylcyclododecanone (2003-04-15),
11. 6545112 - Process for producing &bgr;-butyrolactone homopolymer or copolymer (2003-04-08),
12. 6528074 - Lipid composition containing a liquid crystal structure (2003-03-04),
13. 6515188 - Method for producing 3-l-menthoxypropane-1,2-diol (2003-02-04),
14. 6489522 - Process for producing optically active 3,7-dimethyl-6-octenol and process for producing intermediate therefor (2002-12-03),
15. 6486353 - Process for producing optically active 3,7-dimethyl-6-octenol and process for producing intermediate therefor (2002-11-26),

Title: The Innovative Mind of Toshimitsu Hagiwara

Introduction:

Toshimitsu Hagiwara, a prolific inventor hailing from Kanagawa, Japan, has made significant contributions to the fields of cosmetics, fragrances, and skincare products. With an impressive portfolio of 58 patents, his inventive spirit and commitment to excellence shine through in his groundbreaking work.

Latest Patents:

1. Clear Aqueous Ceramide Composition: Hagiwara's clear aqueous ceramide composition offers a unique blend of ingredients, including ceramides, long-chain fatty acids, and nonionic surface active agents. This formulation finds applications in cosmetics, bath agents, hair-care products, and medical external preparations for skin treatment and protection.

2. Method and Agent for Enhancing Diffusivity and Long-lasting Property of Fragrance: Hagiwara's innovation in fragrance composition involves incorporating a compound represented by a specific formula to improve diffusivity and longevity. This breakthrough has implications for cosmetics, toiletries, bath products, food, and pharmaceuticals, ensuring a superior sensory experience without compromising safety.

Career Highlights:

Throughout his career, Hagiwara has lent his expertise to esteemed companies such as Takasago International Corporation and Semiconductor Energy Laboratory Co., Ltd. His innovative solutions have propelled these organizations to the forefront of the industry, showcasing his technical prowess and creative vision.

Collaborations:

Collaborating with esteemed colleagues like Yoshimasa Matsushima and Hiroshi Sugiyama, Hagiwara has fostered a culture of innovation and excellence. Together, they have explored new frontiers in product development and enhanced the quality and effectiveness of their inventions.

Conclusion:

In conclusion, Toshimitsu Hagiwara stands as a beacon of innovation in the realm of cosmetics, fragrances, and skincare. His patents and collaborations underscore his dedication to pushing boundaries and creating products that enhance the daily lives of consumers worldwide. Hagiwara's inventive spirit continues to inspire future generations of inventors to think beyond conventions and strive for excellence in their pursuits.

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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