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Hsinchu, Taiwan

Ritek Corporation

USPTO Granted Patents = 49

% Expired Patents = 49.0

Trademarks = 7

Forward Citations = 386

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77 inventors (with patents filed for the assignee):

Chien-Hua Wu (9 out of 9 patents)

Shaw-Jong Wang (8 out of 8 patents)

Yu-Chuan Lin (6 out of 28 patents)

4. Chun-Chieh Chen (5 out of 5 patents)

5. Chwei-Jin Yeh (5 out of 5 patents)

6. Din Ping Tsai (4 out of 12 patents)

7. Hung-Ju Shen (4 out of 4 patents)

8. Sheng-Lin Chiu (4 out of 4 patents)

9. Huan-Tung Wang (4 out of 4 patents)

10. Hsin-Chih Hung (4 out of 4 patents)

11. Chwei-Jing Yeh (4 out of 7 patents)

12. Tzu-Feng Tseng (4 out of 4 patents)

13. Wei-Hsiang Wang (3 out of 9 patents)

14. Tien-Rong Lu (3 out of 22 patents)

15. Shyh-yeu Wang (3 out of 3 patents)

Core Competencies:

Optical Disc

Non-Volatile Memory

Phase Change Memory

Surface Plasmon

Electroluminescent Device

Recording Medium

Memory Card Adapter

Super-Resolution

Dye

Photolithography

Vibration-Activated

Organic Light Emitting

49 patents: Sort by Forward Citations

1. 8584918 - Fracturing apparatus (2013-11-19),

2. 8462607 - Optical disc with a discontinuous surface structure (2013-06-11),

3. 8435620 - Optical recording medium and recording material for the same (2013-05-07),

4. 8022382 - Phase change memory devices with reduced programming current (2011-09-20),

5. 7768864 - Non-volatile memory device capable of supplying power (2010-08-03),

6. 7357654 - Interface apparatus with a rotational mechanism (2008-04-15),

7. 7078149 - Optical recording medium and method for making the same (2006-07-18),

8. 7067183 - Write once recording medium (2006-06-27),

9. 7057523 - Non-volatile memory device with wireless control function (2006-06-06),

10. 7042715 - Information product with a rotational mechanism (2006-05-09),

11. 6961302 - Method and structure for intensifying track seeking signals from an optical disk (2005-11-01),

12. 6906993 - Hybrid optical disc having depths of pits as function of wavelength & pre-pits width which are function of track pitch within certain range (2005-06-14),

13. 6901601 - Optical recording medium protection cassette (2005-05-31),

14. 6896946 - Initiation-free super-resolution optical medium (2005-05-24),

15. 6838019 - Phosphorescent material and electroluminescent device using thereof (2005-01-04),

Ritek Corporation, headquartered in Hsinchu, Taiwan, specializes in the development and manufacturing of advanced optical recording media and non-volatile memory devices. The company is recognized for its innovations in phase change memory devices and hybrid optical discs, catering to a diverse range of applications. Additionally, Ritek is involved in the production of electroluminescent display panels and surface plasmon super-resolution layers, showcasing its commitment to cutting-edge technology and research in digital solutions.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

Ritek Corporation

49 Patents

#96 in Hsinchu

#407 in Taiwan

#14,256 in the World

Hsinchu, Taiwan

Ritek Corporation

Forward Citations = 386

77 inventors:

Chien-Hua Wu (9 out of 9 patents)

Shaw-Jong Wang (8 out of 8 patents)

Yu-Chuan Lin (6 out of 28 patents)

4. Chun-Chieh Chen (5 out of 5 patents)

5. Chwei-Jin Yeh (5 out of 5 patents)

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