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Memory-Tech Holdings Inc.

USPTO Granted Patents = 19

% Expired Patents = 68.4

EPO Patents = 4

Forward Citations = 9

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15 inventors (with patents filed for the assignee):

Takayuki Naka (15 out of 22 patents)

Masahito Konishi (15 out of 20 patents)

Masaki Yamamoto (15 out of 130 patents)

4. Hirohisa Yamada (15 out of 47 patents)

5. Hideharu Tajima (15 out of 80 patents)

6. Yoshihisa Adachi (4 out of 47 patents)

7. Hideki Kobayashi (2 out of 80 patents)

8. Makoto Suzuki (2 out of 77 patents)

9. Yoshihiro Takatani (2 out of 2 patents)

10. Mitsuro Satoh (2 out of 2 patents)

11. Masayoshi Tsuchiya (2 out of 17 patents)

12. Takuya Shiroto (2 out of 2 patents)

13. Masakazu Ogasawara (2 out of 56 patents)

14. Masayoshi Yoshida (2 out of 81 patents)

15. Takao Tagiri (2 out of 11 patents)

19 patents: Sort by Forward Citations

1. 11676634 - Method for playing back information recording medium (2023-06-13),

2. 10636445 - Information recording medium and reproduction device (2020-04-28),

3. 10381039 - Reproducing device (2019-08-13),

4. 10255941 - Optical disc having a plurality of recording layers (2019-04-09),

5. 10192581 - Reproducing device (2019-01-29),

6. 10068605 - Optical information recording medium having first and second pit row of identical reflectance (2018-09-04),

7. 10043545 - Information recording medium and reproduction device (2018-08-07),

8. 9978416 - Reproducing device (2018-05-22),

9. 9978415 - Optical information recording medium having first and second pit rows of identical reflectance (2018-05-22),

10. 9928868 - Optical disc having a plurality of recording layers (2018-03-27),

11. 9805761 - Reproducing device (2017-10-31),

12. 9767838 - Optical information recording medium and reproduction method (2017-09-19),

13. 9697863 - Information recording medium and reproduction device (2017-07-04),

14. 9666222 - Optical information recording medium having first and second pit row of identical reflectance (2017-05-30),

15. 9633688 - Reproducing device (2017-04-25),

Memory-Tech Holdings Inc. is a prominent player in the semiconductor industry, specializing in the development and manufacturing of advanced memory solutions. The company focuses on innovative technologies that enhance data storage and retrieval processes, catering to a diverse range of applications across various sectors. With its headquarters in Tokyo, Japan, Memory-Tech is committed to driving progress in memory technology, contributing to advancements in computing, telecommunications, and consumer electronics.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

19 Patents

#1,381 in Tokyo

#3,037 in Japan

#32,623 in the World

Memory-Tech Holdings Inc.

Forward Citations = 9

15 inventors:

Takayuki Naka (15 out of 22 patents)

Masahito Konishi (15 out of 20 patents)

Masaki Yamamoto (15 out of 130 patents)

4. Hirohisa Yamada (15 out of 47 patents)

5. Hideharu Tajima (15 out of 80 patents)

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