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% Expired Patents = 62.5

Forward Citations = 81

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5 inventors (with patents filed for the assignee):

Yung-Chieh Hsieh (24 out of 40 patents)

Chiayu Ai (6 out of 10 patents)

Chiayu Al (1 out of 1 patent)

4. Dar-Yuan Song (1 out of 2 patents)

5. Chang-Tsung Lin (1 out of 1 patent)

24 patents: Sort by Forward Citations

1. 8953161 - Optical spectrum analyzer with continuously rotating tunable filter (2015-02-10),

2. 8929700 - Single-package dual optical-function device (2015-01-06),

3. 8885159 - Optical spectrum analyzer actuated by voice coil (2014-11-11),

4. 8705176 - Modified Michelson delay-line interferometer (2014-04-22),

5. 8270067 - Sagnac delay-line interferometer for DPSK demodulation (2012-09-18),

6. 8264764 - Multiple-FSR DPSK demodulator (2012-09-11),

7. 8174756 - Rhomb beam splitter in optical communication (2012-05-08),

8. 8111450 - Rhomb beam splitter in optical communication (2012-02-07),

9. 8014073 - Thin film coated optical hybrid (2011-09-06),

10. 8004750 - Multiple-FSR DPSK demodulator (2011-08-23),

11. 8004749 - Pseudo common-path DPSK demodulator (2011-08-23),

12. 7982960 - Co-package DQPSK demodulator by Michelson interferometer (2011-07-19),

13. 7961316 - Optical spectrum analyzer with continuously rotating tunable filter (2011-06-14),

14. 7924505 - Free-space hitlessly switchable optical interleaver (2011-04-12),

15. 7864433 - Free-space optical hybrid (2011-01-04),

Optoplex Corporation is a leading provider of advanced optical solutions for the telecommunications and sensing industries. With a focus on innovation, Optoplex designs and manufactures high-performance products such as optical switches, tunable filters, and DWDM transmission systems. Their cutting-edge technologies enable faster and more reliable optical networking solutions, helping businesses and service providers meet growing bandwidth demands. Visit their website to learn more about Optoplex and their optical solutions.

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USPTO Data Jan 1 1976 - Sep 15 2026

24 Patents

#89 in Fremont, CA

#3,277 in California

#13,840 in US

#26,551 in the World

Fremont, CA, United States of America

Optoplex Corporation