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Kabushiki Kaisha Csk

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USPTO Granted Patents = 18

Forward Citations = 88

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15 inventors (with patents filed for the assignee):

Kiyoshi Horie (8 out of 28 patents)

Fumio Kimura (2 out of 20 patents)

Tomoharu Ishijima (2 out of 2 patents)

4. Akira Takagi (1 out of 22 patents)

5. Hidefumi Suzuki (1 out of 7 patents)

6. Koichi Sugimura (1 out of 1 patent)

7. Shigeru Izawa (1 out of 1 patent)

8. Horie Kiyoshi (1 out of 2 patents)

9. Minoru Yukawa (1 out of 1 patent)

10. Jun Takada (1 out of 1 patent)

11. Kiyotaka Ouchi (1 out of 1 patent)

12. Masaaki Nishioka (1 out of 1 patent)

13. Shunzo Takahashi (1 out of 1 patent)

14. Yukitaka Kunimoto (1 out of 1 patent)

15. Kagawa Hirofumi (1 out of 1 patent)

18 patents: Sort by Forward Citations

1. 5261075 - Optical recording medium access system (1993-11-09),

2. 5212602 - Magnetic head having fuse within head case (1993-05-18),

3. 5198646 - System for detecting punched holes of magnetic cards (1993-03-30),

4. 5187698 - Data reading apparatus for identifying position of data tracks (1993-02-16),

5. 5182737 - System for reading optical recording medium using reference liners which (1993-01-26),

6. 5181194 - Writing device for optical memory card (1993-01-19),

7. 5164577 - Optical recording medium with region for identifying defective written (1992-11-17),

8. 5142524 - Optical recording medium (1992-08-25),

9. 5142519 - Optical recording medium and device for writing and reading information (1992-08-25),

10. 5138597 - Apparatus for detecting a read error of an optical recording medium (1992-08-11),

11. 5136588 - Interleaving method and apparatus (1992-08-04),

12. 5136503 - Machine translation system (1992-08-04),

13. 5128917 - Tracking device for optical memory card (1992-07-07),

14. 5113378 - Optical tracking system for an optical recording arrangement with (1992-05-12),

15. 5070491 - Error signal generating circuit (1991-12-03),

Company Overview

Kabushiki Kaisha Csk is a prominent technology company based in Tokyo, Japan, specializing in software development and IT services. The organization focuses on delivering innovative solutions across various sectors, including cloud computing, cybersecurity, and enterprise resource planning. With a commitment to advancing technology, Csk plays a significant role in enhancing digital transformation for businesses, leveraging its expertise to create tailored solutions that meet the evolving needs of its clients in a competitive global market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

18 Patents

#1,414 in Tokyo

#3,125 in Japan

#34,263 in the World

Kabushiki Kaisha Csk

Forward Citations = 88

15 inventors:

Kiyoshi Horie (8 out of 28 patents)

Fumio Kimura (2 out of 20 patents)

Tomoharu Ishijima (2 out of 2 patents)

4. Akira Takagi (1 out of 22 patents)

5. Hidefumi Suzuki (1 out of 7 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kabushiki Kaisha Csk. Retrieved from https://idiyas.com/company/kabushiki-kaisha-csk

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

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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