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For the Inventor, By the Inventor

San Francisco, CA, United States of America

Pacific Bell


USPTO Granted Patents = 43


Forward Citations = 1,370

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38 inventors (with patents filed for the assignee):

goldMedal Daniel P Lubarsky (7 out of 8 patents)

silverMedal James E Kohl (5 out of 11 patents)

bronzeMedal 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:
Fiber Optic Distribution
Packet Routing
Telephone Network Testing
Digital Service Unit
Piezoelectric Relay
Cross-Connect Switch
Error Correcting Code
Hybrid Database Structure
Telephone Lottery Play
Remote Multiplexer
Digital Network
Modulated Banyan Network

43 patents:

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, headquartered in San Francisco, CA, specializes in advanced telecommunications technologies. The company focuses on developing and optimizing telephone network testing methodologies, hybrid database structures, and digital network solutions. Its expertise extends to fiber optic distribution, error correcting codes, and innovative relay technologies such as piezoelectric relays. Additionally, Pacific Bell is involved in the design and implementation of packet routing and cross-connect switches, enhancing the efficiency and reliability of communication networks.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

43 Patents

#106 in San Francisco, CA

#1,899 in California

#8,093 in US

#16,025 in the World

San Francisco, CA (US)
San Francisco, CA, United States of America

Pacific Bell

Forward Citations = 1,370

38 inventors:

goldMedal Daniel P Lubarsky (7 out of 8 patents)

silverMedal James E Kohl (5 out of 11 patents)

bronzeMedal 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]
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