For the Inventor, By the Inventor

Enter assignee name

San Francisco, CA, United States of America

Pacific Bell

USPTO Granted Patents = 43

CIPO Patents = 1

Forward Citations = 1,370

Loading Chart...

Loading Chart...

38 inventors (with patents filed for the assignee):

Daniel P Lubarsky (7 out of 8 patents)

James E Kohl (5 out of 11 patents)

John J Schembri (5 out of 5 patents)

4. Gregg D Carse (5 out of 5 patents)

5. Mark E Haisch (4 out of 4 patents)

6. William P Kornrumpf (3 out of 76 patents)

7. George A Weigt (3 out of 3 patents)

8. Ning Zhang (3 out of 3 patents)

9. Bernard N Daines (3 out of 3 patents)

10. John D Harnden, Jr (2 out of 29 patents)

11. Michael S Adler (2 out of 18 patents)

12. Dominic A Cusano (2 out of 34 patents)

13. Donald L Watrous (2 out of 21 patents)

14. Edward C Posner (2 out of 3 patents)

15. Robert S Scott (2 out of 7 patents)

Core Competencies:

Telephone Network Testing

Hybrid Database Structure

Digital Network

Fiber Optic Distribution

Error Correcting Code

Piezoelectric Relay

Packet Routing Switch

Cross-Connect Switch

Pay-Per-View CATV

Digital Service Unit

TDM Data Switching

Optical Fiber Bandwidth Limiting

43 patents: Sort by Forward Citations

1. 5848144 - Switch cutover with paced transition (1998-12-08),

2. 5452206 - Method for generating documentation for computer software (1995-09-19),

3. 5386525 - System for providing application programs with direct addressability (1995-01-31),

4. 5357556 - System and method for telephone network testing (1994-10-18),

5. 5327485 - Telephone lottery play system (1994-07-05),

6. 5295261 - Hybrid database structure linking navigational fields having a (1994-03-15),

7. 5216853 - Telephone enclosure (1993-06-08),

8. 5216668 - Modulated nonblocking parallel banyan network (1993-06-01),

9. 5132965 - Nonblocking parallel Banyan network (1992-07-21),

10. 5124943 - Digital network utilizing telephone lines (1992-06-23),

11. 5093600 - Piezo-electric relay (1992-03-03),

12. 5065394 - Packet routing switch (1991-11-12),

13. 5062104 - Digital service unit for connecting data processing equipment to a (1991-10-29),

14. 5058163 - Interface unit for transferring digital data between time-domain (1991-10-15),

15. 5023612 - Illegal sequence detection and protection circuit (1991-06-11),

Pacific Bell, also known as PacBell, is a telecommunications company based in California, USA. It is a subsidiary of AT&T Inc. and provides telecommunication services to residential and business customers. The company offers a range of services including voice, data, internet, and wireless communications. With a strong presence in California, Pacific Bell focuses on delivering reliable and advanced communication solutions to its customers.

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

Company Badge

USPTO Data Jan 1 1976 - Sep 15 2026

43 Patents

#106 in San Francisco, CA

#1,893 in California

#8,071 in US

#15,986 in the World

San Francisco, CA, United States of America

Pacific Bell

Forward Citations = 1,370

38 inventors:

Daniel P Lubarsky (7 out of 8 patents)

James E Kohl (5 out of 11 patents)

John J Schembri (5 out of 5 patents)

4. Gregg D Carse (5 out of 5 patents)

5. Mark E Haisch (4 out of 4 patents)

Please report any incorrect information to [email protected]

Loading…