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),

Phonemate, Inc. is a leading provider of telecommunications solutions, specializing in phone systems for businesses of all sizes. With a focus on innovation and customer service, Phonemate offers a range of products and services to help companies improve communication and efficiency. From traditional landline systems to cutting-edge VoIP technology, Phonemate has the expertise to meet the unique needs of each client.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

19 Patents

#34 in Torrance, CA

#3,964 in California

#16,592 in US

#31,670 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)

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