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Hirofumi Ohtani

This inventor holds 18 USPTO granted patents. Top assignees: Konica Corporation, Konishiroku Photo Industry Co., Ltd., Merck Patent Gmbh. Active years: 1987-2022.

USPTO Granted Patents = 18

% Patents Active = 100.0

Average Co-Inventor Count = 3.2

ph-index = 5

Forward Citations = 52(Granted Patents)

Location History:

Tokyo, JP (1991)
Hachioji, JP (1991)
Hino, JP (1987 - 2022)

Company Filing History:

Konishiroku Photo Industry Co., Ltd.

Years Active: 1987-2022

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18 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11507649 - Optical fingerprint authentication device (2022-11-22),

2. 10853465 - Optical fingerprint authentication device (2020-12-01),

3. 9929379 - Method for producing organic electroluminescent element (2018-03-27),

4. 5541052 - Silver halide photographic material having improved keeping quality (1996-07-30),

5. 5523202 - Silver halide emulsion and process for its preparation (1996-06-04),

6. 5518874 - Method of manufacturing a silver halide emulsion (1996-05-21),

7. 5362619 - High-speed halide photographic light-sensitive material (1994-11-08),

8. 5362470 - Ultrafine gold and/or silver chalcogenide and production thereof (1994-11-08),

9. 5358841 - Method for preparing a silver halide emulsion (1994-10-25),

10. 5340710 - Photosensitive silver halide photographic material (1994-08-23),

11. 5334359 - Apparatus for production of sparingly water-soluble salt crystal grains (1994-08-02),

12. H001196 - Color photographic light-sensitive material excellent in color (1993-05-31),

13. 5200308 - Color photographic material (1993-04-06),

14. 5041366 - Silver halide photographic material (1991-08-20),

15. 5039601 - Silver halide emulsions with silver halide grain groups of different (1991-08-13),

Title: Hirofumi Ohtani - Innovator in Optical Fingerprint Authentication

Introduction

Hirofumi Ohtani is a notable inventor located in Hino, Japan. With an impressive portfolio of 18 patents, he has made significant contributions to the field of optical fingerprint authentication technology.

Latest Patents

His latest innovation is an optical fingerprint authentication device, which integrates a light source and an image sensor to detect diffused light. This device utilizes an organic electroluminescence panel, which consists of a light-emitting portion and a light-transmitting non-light-emitting portion. The light-emitting region is configured by an organic electroluminescence element. Additionally, the device incorporates a fingerprint information reader with the image sensor positioned adjacent to the non-light-emitting portion, further enhancing its functionality.

Career Highlights

Hirofumi Ohtani has had a distinguished career, working for prestigious companies such as Konica Corporation and Konishiroku Photo Industry Co., Ltd. His experience in these organizations has greatly influenced his innovative endeavors in technology.

Collaborations

Throughout his career, Ohtani has collaborated with talented individuals, including Syoji Matsuzaka and Hiroshi Okusa. These collaborations have enriched his research and led to groundbreaking advancements in the field of fingerprint authentication.

Conclusion

In conclusion, Hirofumi Ohtani stands out as an accomplished inventor in the realm of optical fingerprint authentication. With a strong background and noteworthy collaborations, he continues to contribute to innovations that enhance security and technology. His work not only exemplifies his expertise but also sets the foundation for future advancements in this critical area.

Profile summary based on public USPTO records.

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