IDiyas

For the Inventor, By the Inventor

Minami-ashigara, Japan

Reiichi Ohi

USPTO Granted Patents = 18

Average Co-Inventor Count = 2.9

ph-index = 8

Forward Citations = 137(Granted Patents)


Location History:

  • Kanagawa, JA (1976)
  • Minami-ashigara, JA (1976 - 1977)
  • Tokyo, JA (1977)
  • Minami-ashigara, JP (1978)
  • Kanagawa, JP (1991)

Company Filing History:

goldMedal18 out of 16,458 
 
Fuji Photo Film Company, Limited
 patents

Years Active: 1976-1991

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18 patents (USPTO):Explore Patents
1. 5017466 - Color-forming aminopyrimidine couplers and silver halide color (1991-05-21),
2. 4105452 - Multi-layered color photographic light-sensitive material (1978-08-08),
3. 4054580 - Process for producing 2,2,4-trimethyl-6-hydroxy-7-substituted chromans (1977-10-18),
4. 4054458 - Gelatino silver halide photosensitive material (1977-10-18),
5. 4021248 - Color photographic light-sensitive material (1977-05-03),
6. 4009038 - Silver halide color photographic materials (1977-02-22),
7. 4002480 - Photographic silver halide emulsion (1977-01-11),
8. 3994733 - Silver halide photographic emulsion (1976-11-30),
9. 3982044 - Silver halide photographic emulsions used for electron beam recording (1976-09-21),
10. 3975395 - Aryl-tetrazol-5-ylthio- and thioether-substituted hydroquinone compounds (1976-08-17),
11. 3960570 - Color photographic silver halide light-sensitive materials (1976-06-01),
12. 3960568 - Photographic material containing fine silver halide particles and (1976-06-01),
13. 3957491 - Silver halide photographic material containing an organic compound (1976-05-18),
14. 3954478 - Silver halide emulsion containing an alkenyl benzothiazolium salt as (1976-05-04),
15. 3953531 - Alkylhydroquinone and process for producing the same (1976-04-27),

Title: The Innovative Contributions of Reiichi Ohi

Introduction

Reiichi Ohi is a prominent inventor based in Minami-ashigara, Japan. He has made significant contributions to the field of photography through his innovative patents. With a total of 18 patents to his name, Ohi has played a crucial role in advancing photographic technology.

Latest Patents

Among his latest patents are the "Color-forming aminopyrimidine couplers" and "Multi-layered color photographic light-sensitive material." The first patent describes a color-forming aminopyrimidine coupler represented by a specific formula, which incorporates various chemical groups to enhance the quality of color images in photographic materials. This invention ensures high heat-fastness in the resulting images. The second patent focuses on a multi-layered color photographic light-sensitive material that includes multiple light-sensitive silver halide emulsion layers, providing images with substantially different hues. This innovation incorporates advanced couplers and hydroquinone derivatives to improve the performance of photographic materials.

Career Highlights

Reiichi Ohi is associated with Fuji Photo Film Company, Limited, where he has contributed to the development of cutting-edge photographic technologies. His work has been instrumental in enhancing the quality and durability of photographic images, making significant strides in the industry.

Collaborations

Ohi has collaborated with notable coworkers such as Keisuke Shiba and Tadao Shishido. Their combined expertise has fostered innovation and progress within the field of photography.

Conclusion

Reiichi Ohi's contributions to photographic technology through his patents have had a lasting impact on the industry. His innovative spirit continues to inspire advancements in photography, ensuring high-quality images for future generations.

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