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For the Inventor, By the Inventor

Minamiashigara, Japan

Akio Okumura

This inventor holds 15 USPTO granted patents. Top assignee: Fuji Photo Film Company, Limited. Active years: 1976-1983.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Akio Okumura. Retrieved from https://idiyas.com/inventor/akio-okumura

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

USPTO Granted Patents = 15

% Patents Active = 100.0

Average Co-Inventor Count = 4.4

ph-index = 7

Forward Citations = 113(Granted Patents)


Location History:

  • Kanagawa, JA (1976)
  • Minami-ashigara, JA (1976 - 1978)
  • Minami-ashigara, JP (1979 - 1983)

Company Filing History:

goldMedal15 out of 16,458 
 
Fuji Photo Film Company, Limited
 patents

Years Active: 1976-1983

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15 patents (USPTO):Explore Patents
1. 4404274 - Photographic light sensitive element containing yellow color coupler and (1983-09-13),
2. 4269936 - Process of forming yellow photographic images (1981-05-26),
3. 4163670 - Color photographic material (1979-08-07),
4. 4138258 - Multi-layered color photographic materials (1979-02-06),
5. 4095984 - Development inhibitor releasing coupler and photographic element (1978-06-20),
6. 4086094 - Photographic couplers with N-heterocyclic development inhibiting (1978-04-25),
7. 4083721 - Photographic phenolic couplers with amido coupling-off groups (1978-04-11),
8. 4046573 - Color photographic materials (1977-09-06),
9. 4032345 - Silver halide materials containing photographic color couplers with (1977-06-28),
10. 4022620 - Method of forming color photographic images (1977-05-10),
11. 4012259 - Photographic silver halide emulsion and element and method of forming (1977-03-15),
12. 3996055 - Color photographic light-sensitive material (1976-12-07),
13. 3990896 - Color photographic light sensitive element and method of forming color (1976-11-09),
14. 3960571 - Silver halide color photographic light-sensitive material (1976-06-01),
15. 3935015 - Silver halide color photographic materials containing (1976-01-27),

Title: Akio Okumura: Innovator in Photographic Technology

Introduction

Akio Okumura is a prominent inventor based in Minami-ashigara, Japan. He has made significant contributions to the field of photographic technology, holding a total of 15 patents. His work has advanced the development of photographic light-sensitive elements, which are crucial in the imaging process.

Latest Patents

Among his latest patents is a photographic light-sensitive element that contains a yellow color coupler. This invention includes a silver halide emulsion layer that utilizes an alpha-diacylamino substituted (aliphatic acyl) acetamide yellow dye forming coupler. The method for forming yellow dye images involves processing a silver halide photographic emulsion with an aromatic primary amino developing agent in the presence of this compound. This coupler is recognized as an excellent two-equivalent coupler. Another notable patent details the process of forming a dye image by developing an image-exposed silver halide photographic emulsion layer using an aromatic primary amine color developing agent alongside the yellow dye forming coupler.

Career Highlights

Akio Okumura is associated with Fuji Photo Film Company, Limited, where he has contributed to various innovative projects. His expertise in photographic technology has positioned him as a key figure in the industry.

Collaborations

He has collaborated with notable coworkers, including Keisuke Shiba and Yukio Yokota, to further enhance the advancements in photographic technology.

Conclusion

Akio Okumura's contributions to photographic technology through his patents and collaborations have significantly impacted the field. His innovative work continues to influence the development of imaging technologies.

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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