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Billerica, MA, United States of America

Unitrode Corporation

USPTO Granted Patents = 71

Forward Citations = 1,812

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49 inventors (with patents filed for the assignee):

Robert A Mammano (11 out of 13 patents)

Robert Allan Neidorff (10 out of 46 patents)

Mark G Jordan (10 out of 11 patents)

4. John A O'Connor (6 out of 10 patents)

5. Herman F Van Dyk Soerewyn (5 out of 5 patents)

6. Joseph Maurice Khayat (4 out of 35 patents)

7. Scott C Blackstone (4 out of 4 patents)

8. Richard Lee Valley (3 out of 22 patents)

9. Philip Leland Hower (3 out of 48 patents)

10. Burt Lee Price (3 out of 35 patents)

11. Larry J Wofford (3 out of 8 patents)

12. Varnum S Holland (3 out of 4 patents)

13. Jeffrey D Putsch (3 out of 3 patents)

14. John P Bazinet (3 out of 5 patents)

15. Winthrop H McClure (2 out of 3 patents)

Core Competencies:

Charge Pump Circuit

Battery Pack

Induction Motor

DC Motor Driver

Voltage Reference

Power Supply Controller

Switching Regulator

Transformer Isolated Drive

Current Sensor

SCR

Analog to Digital Converter

Digital to Analog Converter

71 patents: Sort by Forward Citations

1. 6344959 - Method for sensing the output voltage of a charge pump circuit without applying a load to the output stage (2002-02-05),

2. 6144245 - Adaptive leading edge blanking circuit to eliminate spike on power (2000-11-07),

3. 6115469 - Telephone line ring signal and DC power generator (2000-09-05),

4. 6114835 - Multi-cell battery pack charge balancing circuit (2000-09-05),

5. 5969498 - Induction motor controller (1999-10-19),

6. 5929577 - Brushless DC motor controller (1999-07-27),

7. 5886487 - DC motor driver having output FETS that conduct to rectify output (1999-03-23),

8. 5847942 - Controller for isolated boost converter with improved detection of RMS (1998-12-08),

9. 5767664 - Bandgap voltage reference based temperature compensation circuit (1998-06-16),

10. 5751139 - Multiplexing power converter (1998-05-12),

11. 5710697 - Power supply controller having frequency foldback and volt-second duty (1998-01-20),

12. 5691889 - Controller having feed-forward and synchronization features (1997-11-25),

13. 5663878 - Apparatus and method for generating a low frequency AC signal (1997-09-02),

14. 5652501 - Voltage sensor for detecting cell voltages (1997-07-29),

15. 5648780 - Digital to analog converter (1997-07-15),

Company Overview

Unitrode Corporation, based in Billerica, MA, specializes in the development and manufacturing of advanced power management circuits. The company focuses on innovative technologies such as charge pump circuits, battery packs, and various motor drivers, including induction and DC motor drivers. Unitrode's expertise extends to voltage references, power supply controllers, and switching regulators, positioning it as a key player in the power management sector. Their solutions cater to a diverse range of applications, enhancing efficiency and performance in electronic systems.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

71 Patents

#12 in Billerica, MA

#288 in Massachusetts

#5,160 in US

#10,495 in the World

Billerica, MA, United States of America

Unitrode Corporation

Forward Citations = 1,812

49 inventors:

Robert A Mammano (11 out of 13 patents)

Robert Allan Neidorff (10 out of 46 patents)

Mark G Jordan (10 out of 11 patents)

4. John A O'Connor (6 out of 10 patents)

5. Herman F Van Dyk Soerewyn (5 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Unitrode Corporation. Retrieved from https://idiyas.com/company/unitrode

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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