For the Inventor, By the Inventor

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Bothell, WA, United States of America

Teltone Corporation

USPTO Granted Patents = 16

Trademarks = 1

Forward Citations = 501

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18 inventors (with patents filed for the assignee):

Raymond Ma (5 out of 5 patents)

Daniel R Asmussen (3 out of 5 patents)

John E Trombly (2 out of 5 patents)

4. Barry C Breen (2 out of 3 patents)

5. John D Foulkes (2 out of 2 patents)

6. David K Worthington (2 out of 2 patents)

7. Alexander D Vdolek (1 out of 2 patents)

8. David M Rollins (1 out of 4 patents)

9. John D Hoskinson (1 out of 5 patents)

10. Stephen W Horton (1 out of 3 patents)

11. Arnold J Koster (1 out of 1 patent)

12. Richard W Soshea (1 out of 1 patent)

13. Ray Ma (1 out of 1 patent)

14. Scott P Masonholder (1 out of 1 patent)

15. Ardell T Dyste (1 out of 1 patent)

16 patents: Sort by Forward Citations

1. 5563938 - Subscriber telephone diverter switch (1996-10-08),

2. 5241587 - Polling controller (1993-08-31),

3. 5239570 - 9-1-1 Switched access system (1993-08-24),

4. 4412299 - Phase jitter detector (1983-10-25),

5. 4330687 - Audio and full duplex digital data carrier system (1982-05-18),

6. 4302629 - Digital data transmission system (1981-11-24),

7. 4214130 - Signal coupler (1980-07-22),

8. 4165912 - Offset adapter connector (1979-08-28),

9. 4146751 - Solid state pulsing apparatus for pulsing selected line relay terminals (1979-03-27),

10. 4145576 - DTMF and rotary dial signal receiver (1979-03-20),

11. 4121880 - Elongate electrical connector retaining device (1978-10-24),

12. 4009352 - Multiple link circuit for a port multiplexer (1977-02-22),

13. 3988687 - Step-servoed tone detector (1976-10-26),

14. 3961141 - Stop time-out until after first DTMF digit dialed circuit (1976-06-01),

15. 3959598 - Identification forwarding circuit for use with tone-to-pulse converters (1976-05-25),

Teltone Corporation is a leading provider of telecommunications products and solutions. With over 30 years of experience, Teltone offers a wide range of high-quality products including telephone headsets, conference phones, and voIP gateways. Their innovative solutions are trusted by businesses of all sizes to improve communication and productivity.

This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 15 2026

16 Patents

#32 in Bothell, WA

#433 in Washington

#19,880 in US

#37,726 in the World

Bothell, WA, United States of America

Teltone Corporation

Forward Citations = 501

18 inventors:

Raymond Ma (5 out of 5 patents)

Daniel R Asmussen (3 out of 5 patents)

John E Trombly (2 out of 5 patents)

4. Barry C Breen (2 out of 3 patents)

5. John D Foulkes (2 out of 2 patents)

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