For the Inventor, By the Inventor

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Hamilton, NJ, United States of America

Princetel, Inc.

USPTO Granted Patents = 21

Trademarks = 2

Forward Citations = 95

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8 inventors (with patents filed for the assignee):

Boying Barry Zhang (21 out of 29 patents)

Hong Zhang (19 out of 22 patents)

Louis D Violante (9 out of 9 patents)

4. Joe Ritacco (6 out of 6 patents)

5. Jingrong Shen (4 out of 5 patents)

6. Hong Zhang (2 out of 2 patents)

7. Liangju Lu (1 out of 1 patent)

8. Zelei Guan (1 out of 1 patent)

21 patents: Sort by Forward Citations

1. 12092875 - Rotatable capsule for a fiber optic rotary joint (2024-09-17),

2. 11953126 - Fluid rotary joint assembly suitable for high rotational speed (2024-04-09),

3. 11309673 - Slip ring system for high speed applications (2022-04-19),

4. 11289865 - High frequency slip ring with through bore (2022-03-29),

5. 11143823 - Fiber optic slip ring with through bore (2021-10-12),

6. 10133006 - Soft contacting rotational interface system for transmitting RF and optical signals concurrently across thereof (2018-11-20),

7. 9927579 - De-rotating mechanism for off-axis fiber optic rotary joint (2018-03-27),

8. 9634449 - Soft contacting rotational interface for RF rotary joint (2017-04-25),

9. 9335485 - Using an optical expander/condenser to achieve a compact beam structure for a multi-channel optical rotary joint (2016-05-10),

10. 9263838 - Slip ring for high speed data transmission (2016-02-16),

11. 9102405 - Cable-tethered helicopter surveillance system (2015-08-11),

12. 9096302 - Hydrogen replenished lighter-than-air vehicle and method to replenish hydrogen (2015-08-04),

13. 8965151 - Low insertion loss, low back reflection fiber optic rotary joint with increased data throughput (2015-02-24),

14. 8944698 - Compact, tunable, submersible dry mate n-pin optical connector (2015-02-03),

15. 8693822 - Limited rotation fiber optic rotary joint (2014-04-08),

Company Overview

Princetel, Inc. is a technology company based in Hamilton, NJ, specializing in the development and manufacturing of advanced optical and fiber optic solutions. The company focuses on providing high-performance products for various industries, including telecommunications, aerospace, and medical applications. Princetel is known for its innovative approach to fiber optic connectivity, offering a range of products that enhance data transmission and communication reliability across diverse environments.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

21 Patents

#4 in Hamilton, NJ

#602 in New Jersey

#15,695 in US

#29,961 in the World

Hamilton, NJ, United States of America

Princetel, Inc.

Forward Citations = 95

8 inventors:

Boying Barry Zhang (21 out of 29 patents)

Hong Zhang (19 out of 22 patents)

Louis D Violante (9 out of 9 patents)

4. Joe Ritacco (6 out of 6 patents)

5. Jingrong Shen (4 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Princetel, Inc.. Retrieved from https://idiyas.com/company/princetel

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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