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For the Inventor, By the Inventor

Hachioji, Japan

Yoshio Nakajima

This inventor holds 19 USPTO granted patents, primarily in Optical Systems. Top assignee: Olympus Optical Company, Ltd.. Active years: 1978-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshio Nakajima. Retrieved from https://idiyas.com/inventor/yoshio-nakajima

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

Calculating rank
USPTO Granted Patents = 19

% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 7

Forward Citations = 165(Granted Patents)


Location History:

  • Hachiouji, JA (1978)
  • Hachiouji, JP (1979)
  • Hachioji, JP (1979 - 1983)
  • Higashimurayama, JP (1993 - 1995)

Company Filing History:

goldMedal19 out of 5,729 
 
Olympus Optical Company, Ltd.
 patents

Years Active: 1978-1995

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Areas of Expertise:
Optical Card
Information Recording
Photographing Apparatus
Optical Recording Medium
Image Processing
Photometric System
Film Detector
Automatic Cultivating
In-Focus Detection
Projection Apparatus
Reloadable Apparatus
Jitter Elimination
19 patents (USPTO):Explore Patents
1. 5461483 - Optical card having registered region for directory modified information (1995-10-24),
2. 5408531 - Information recording/reproducing apparatus for converting and (1995-04-18),
3. 5315572 - Information reproducing apparatus capable of eliminating jitters (1994-05-24),
4. 5280468 - Optical recording medium (1994-01-18),
5. 5237550 - Reloadable optical recording/reproducing apparatus (1993-08-17),
6. 4373796 - Film end detector for use in automatic film winding camera (1983-02-15),
7. 4363541 - Photographing apparatus (1982-12-14),
8. 4359273 - Photographing apparatus (1982-11-16),
9. 4339187 - Photographing apparatus (1982-07-13),
10. 4331864 - Apparatus for detecting an in-focused condition of optical systems (1982-05-25),
11. 4329030 - Integrating time detector for photographic apparatus (1982-05-11),
12. 4326217 - Reversed image sensing apparatus (1982-04-20),
13. 4314150 - Apparatus for detecting the in-focusing conditions (1982-02-02),
14. 4302780 - Photometric system (1981-11-24),
15. 4289959 - Apparatus for detecting the in-focusing conditions (1981-09-15),

Title: The Innovative Mind of Yoshio Nakajima

Introduction

Yoshio Nakajima, based in Hachioji, Japan, is a renowned inventor with a remarkable portfolio of 19 patents. His contributions to the field of optical technology have significantly advanced the way we handle data storage and directory management.

Latest Patents

Among his latest inventions is an optical card featuring a registered region for directory modified information. This innovation allows for the optical recording of write-once-information as a file, along with a directory information region that includes file names and sizes. The invention also introduces a method to delete and modify directory information, enhancing user flexibility. Another noteworthy patent includes an information recording/reproducing apparatus designed to convert data while also incorporating error-correcting codes. This dual process ensures the integrity and reliability of the recorded data, preventing errors that exceed corrective abilities during reproduction.

Career Highlights

Yoshio Nakajima currently works at Olympus Optical Company, Ltd., a leader in optical and imaging technologies. His work has been instrumental in developing innovative solutions that enhance data management and recording processes. His vast experience and dedication have made him a key figure in the field, particularly in advancements related to optical cards.

Collaborations

Throughout his career, Nakajima has collaborated with esteemed colleagues, including Kosaku Tsuboshima and Shuichi Takayama. Together, they have contributed to the ongoing evolution of optical technologies and data management systems, fostering a spirit of innovation and teamwork.

Conclusion

Yoshio Nakajima’s inventions continue to shape the future of optical technology. His dedication to innovation and collaboration, along with a strong foundation of patents, serves as an inspiration to aspiring inventors and researchers in the field.

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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