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For the Inventor, By the Inventor

Minamiashigara, Japan

Seiki Sakanoue

This inventor holds 12 USPTO granted patents. Top assignee: Fuji Photo Film Company, Limited. Active years: 1976-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seiki Sakanoue. Retrieved from https://idiyas.com/inventor/seiki-sakanoue

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

USPTO Granted Patents = 12

% Patents Active = 100.0

Average Co-Inventor Count = 3.3

ph-index = 5

Forward Citations = 53(Granted Patents)


Location History:

  • Minami-ashigara, J (1976)
  • Minami-ashigara, JA (1976 - 1977)
  • Minami Ashigara, JP (1978 - 1981)
  • Kanagawa, JP (1989 - 1990)

Company Filing History:

goldMedal12 out of 16,458 
 
Fuji Photo Film Company, Limited
 patents

Years Active: 1976-1990

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12 patents (USPTO):Explore Patents
1. 4946770 - Silver halide color photographic material (1990-08-07),
2. 4865963 - Silver halide color photographic materials containing novel magenta (1989-09-12),
3. 4308336 - Color photographic sensitive materials (1981-12-29),
4. 4267250 - Color diffusion transfer photographic element (1981-05-12),
5. 4179293 - Color photographic light-sensitive material (1979-12-18),
6. 4124393 - Shifted anthraquinone dye developing agents (1978-11-07),
7. 4032349 - High molecular weight mercapto compound in color diffusion transfer (1977-06-28),
8. 4014700 - Furan containing azo dye developers (1977-03-29),
9. 3999991 - Thioindioxyl azo dye developer for diffusion transfer process (1976-12-28),
10. 3994731 - Azo dye developers comprising furan rings (1976-11-30),
11. 3982946 - Bis-azo pyrazolone type dye developer and light-sensitive material (1976-09-28),
12. 3953211 - Dye developer for diffusion transfer elements (1976-04-27),

Title: Seiki Sakanoue: Innovator in Silver Halide Color Photographic Materials

Introduction

Seiki Sakanoue is a prominent inventor based in Minami-ashigara, Japan. He has made significant contributions to the field of photography, particularly in the development of silver halide color photographic materials. With a total of 12 patents to his name, Sakanoue's work has greatly influenced the quality and durability of photographic products.

Latest Patents

One of Sakanoue's latest patents involves a silver halide color photographic material that comprises a support with at least one silver halide emulsion layer. This emulsion layer contains a dispersion of oleophilic fine particles, which include an oil-soluble cyan coupler capable of forming non-diffusible cyan dye. The material is designed to provide excellent preservability, particularly in resisting dark and light discoloration. Another notable patent features a silver halide color photographic material that includes a pyrazoloazole series magenta coupler. This innovative coupler enhances light fastness and coloring properties, making it a valuable addition to photographic technology.

Career Highlights

Sakanoue is associated with Fuji Photo Film Company, Limited, where he has played a crucial role in advancing photographic technology. His expertise in silver halide materials has positioned him as a key figure in the industry, contributing to the development of high-quality photographic products.

Collaborations

Throughout his career, Sakanoue has collaborated with notable coworkers, including Yukio Maekawa and Shinsaku Fujita. These partnerships have fostered innovation and have led to the successful development of various photographic materials.

Conclusion

Seiki Sakanoue's contributions to the field of photography through his innovative patents have significantly enhanced the quality of silver halide color photographic materials. His work continues to influence the industry, ensuring that photographic products meet high standards of durability and performance.

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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