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For the Inventor, By the Inventor

Minami-ashigara, Japan

Toshio Kawagishi

USPTO Granted Patents = 55


Average Co-Inventor Count = 3.1

ph-index = 12

Forward Citations = 413(Granted Patents)

Forward Citations (Not Self Cited) = 381(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Ashigara, JP (1997)
  • Kanagawa, JP (1985 - 2004)
  • Minamiashigara, DE (2006)
  • Minami-ashigara, JP (1987 - 2007)

Company Filing History:

goldMedal53 out of 16,458 
 
Fuji Photo Film Company, Limited
 patents
silverMedal5 out of 3,603 
 
Kao Corporation
 patents
bronzeMedal1 out of 1,588 
 
Teijin Limited
 patents
4. 1 out of 832,880 
Other
 patents
where one patent can have more than one assignee

Years Active: 1985-2007

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Areas of Expertise:
Hair Dye Composition
Color Change Method
Silver Halide Photographic Material
Photosensitive Materials
Dye-Forming Method
Image Formation Method
Color Developing Compositions
Heat-Developable Light-Sensitive Material
Arylidene Compounds
Azomethine Compounds
Prostaglandin Production
Pyrazolo Derivatives
55 patents (USPTO):Explore Patents
1. 7198651 - Method of effecting a reversible color change of dyed hair (2007-04-03),
2. 7083655 - Hair dye composition (2006-08-01),
3. 7060424 - Method of increasing speed of silver halide color photosensitive material (2006-06-13),
4. 7056355 - Hair dye composition and dyeing method (2006-06-06),
5. 7029501 - Hair dye composition (2006-04-18),
6. 6962610 - Hair dye composition (2005-11-08),
7. 6783558 - Hair coloring method and composition (2004-08-31),
8. 6770431 - Silver halide color photosensitive material (2004-08-03),
9. 6645711 - Silver halide photographic light-sensitive material (2003-11-11),
10. 6596470 - Heat-developable light-sensitive material and image-forming method using the same (2003-07-22),
11. 6545157 - Dye-forming method, color developing compositions, photosensitive materials and color developing agent precursors (2003-04-08),
12. 6528243 - Silver halide color photographic light-sensitive material (2003-03-04),
13. 6432624 - Method of processing silver halide color photographic lightsensitive material (2002-08-13),
14. 6423484 - Silver halide color photographic light-sensitive material (2002-07-23),
15. 6372416 - Dye-forming method, color developing compositions, photosensitive materials and color developing agent precursors (2002-04-16),

Title: Toshio Kawagishi - Pioneering Innovator in Hair Dye Technology

Introduction:

Toshio Kawagishi, a visionary inventor hailing from Minami-ashigara, Japan, has made significant strides in the realm of hair dye technology. With an impressive portfolio of 55 patents under his belt, Kawagishi is renowned for his groundbreaking innovations that have revolutionized the hair care industry.

Latest Patents:

1. Method of effecting a reversible color change of dyed hair: Kawagishi's pioneering method allows for a simple and reversible change of hair color dyed with azo dyes. This innovation empowers both salon professionals and consumers to alter hair color effortlessly by using acid and alkaline treatment compositions.

2. Hair dye composition: Kawagishi's hair dyeing composition, featuring azo dyes with specific molecular structures, offers vibrant and long-lasting color results for human and animal hair. This revolutionary product ensures vivid coloration with minimal fading over time, enhancing the overall hair dyeing experience.

Career Highlights:

Throughout his illustrious career, Kawagishi has held positions at esteemed companies such as Fuji Photo Film Company, Limited and Kao Corporation. His innovative spirit and commitment to excellence have propelled him to the forefront of the hair care industry, earning him a reputation as a trailblazer in the field of hair dye technology.

Collaborations:

Kawagishi has collaborated with industry luminaries such as Nobuo Furutachi and Kiyoshi Nakazyo, pooling their expertise to drive forward cutting-edge research and development initiatives. These collaborations have paved the way for the creation of novel products and technologies that have redefined standards in the hair care market.

Conclusion:

In conclusion, Toshio Kawagishi's relentless dedication to innovation and his remarkable contributions to the field of hair dye technology have cemented his legacy as a pioneering inventor. His visionary work continues to inspire and shape the future of the hair care industry, setting new benchmarks for creativity and excellence in the realm of inventions and patents.

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