For the Inventor, By the Inventor

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Torrance, CA, United States of America

Phonemate, Inc.

USPTO Granted Patents = 19

Forward Citations = 526

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17 inventors (with patents filed for the assignee):

Stephen B Knuth (6 out of 14 patents)

David A Sharbaugh (5 out of 11 patents)

Kenneth R Core (4 out of 6 patents)

4. Mark Karnowski (3 out of 6 patents)

5. Alastair W Jarrett (3 out of 4 patents)

6. Mark J Karnowski (3 out of 17 patents)

7. Oded Yossifor (2 out of 3 patents)

8. Eskandar Afshar (2 out of 3 patents)

9. Michinari Ueki (2 out of 2 patents)

10. James W Oblak (2 out of 2 patents)

11. James W Mazzolini (1 out of 5 patents)

12. Benjamin H Stansbury, Jr (1 out of 29 patents)

13. Pierluigi Pacciardi (1 out of 1 patent)

14. Sanford M Brown, Iii (1 out of 4 patents)

15. Neal Buglewicz (1 out of 1 patent)

19 patents: Sort by Forward Citations

1. D372717 - Telephone answering device base unit (1996-08-13),

2. 5432844 - Shared line answering system with enhanced extension device features (1995-07-11),

3. 5432836 - Interchangeable base arrangement for wall mount/desk mount telephone (1995-07-11),

4. 5418839 - Environmental adaptive mechanism for channel utilization in cordless (1995-05-23),

5. 5406618 - Voice activated, handsfree telephone answering device (1995-04-11),

6. 5400393 - Voice mail digital telephone answering device (1995-03-21),

7. D356087 - Combined telephone, telephone handset and telephone answering device (1995-03-07),

8. 5392332 - Shared line telephone answering system with a telephone line-powered (1995-02-21),

9. 5313516 - Telephone answering device with automatic function (1994-05-17),

10. 5289529 - Means for improving the dynamic range of an analog/digital converter in (1994-02-22),

11. 5197093 - Enviromental adaptive mechanism for channel utilization in cordless (1993-03-23),

12. 5111500 - Handset or speaker message retrieval system (1992-05-05),

13. D316409 - Cordless handset telephone (1991-04-23),

14. D316024 - All digital telephone answering device (1991-04-09),

15. D315730 - Cordless telephone answering set (1991-03-26),

Company Overview

Phonemate, Inc. is a technology company based in Torrance, California, specializing in advanced telecommunications solutions. The organization focuses on developing innovative products that enhance communication efficiency and accessibility. With a commitment to quality and user-friendly design, Phonemate offers a range of devices and systems tailored for both residential and commercial applications. Their expertise spans various aspects of telephony, ensuring reliable and effective communication tools for diverse user needs.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

19 Patents

#31 in Torrance, CA

#4,105 in California

#17,150 in US

#32,693 in the World

Torrance, CA, United States of America

Phonemate, Inc.

Forward Citations = 526

17 inventors:

Stephen B Knuth (6 out of 14 patents)

David A Sharbaugh (5 out of 11 patents)

Kenneth R Core (4 out of 6 patents)

4. Mark Karnowski (3 out of 6 patents)

5. Alastair W Jarrett (3 out of 4 patents)

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

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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