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For the Inventor, By the Inventor

Wallington, NJ, United States of America

Walter Parfomak

This inventor holds 11 USPTO granted patents. Top assignees: Alliedsignal Inc., Allied Corporation, Other. Active years: 1985-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Walter Parfomak. Retrieved from https://idiyas.com/inventor/walter-parfomak

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 11

% Patents Active = 100.0

Average Co-Inventor Count = 3.1

ph-index = 6

Forward Citations = 141(Granted Patents)


Company Filing History:

goldMedal8 out of 3,002 
 
Alliedsignal Inc.
 patents
silverMedal2 out of 1,393 
 
Allied Corporation
 patents
bronzeMedal1 out of 834,601 
Other
 patents

Years Active: 1985-1999

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11 patents (USPTO):Explore Patents
1. 5953491 - Control system for a permanent magnet motor (1999-09-14),
2. 5796227 - Initialization damping for a permanent magnet motor (1998-08-18),
3. 5751131 - Dynamic rate feedback PM motor starting technique (1998-05-12),
4. 5559417 - Electronically commutated two-axis gyro control system (1996-09-24),
5. 5321986 - Polar loop implementation for a two degree of freedom gyro (1994-06-21),
6. 5321635 - Synchro drive stabilization system (1994-06-14),
7. 5313148 - Electronically commutated two-axis gyro control system (1994-05-17),
8. 4862050 - Optical commutation and tilt sensing for a permanent magnet gyro (1989-08-29),
9. 4818922 - Optical commutation for permanent magnet motors (1989-04-04),
10. 4673849 - Permanent magnet motor closed loop restarting system (1987-06-16),
11. 4492902 - Permanent magnetic motor common leg impedance compensation means (1985-01-08),

Title: The Innovations of Walter Parfomak: A Pioneer in Motor Control Systems

Introduction

Walter Parfomak, an inventive mind located in Wallington, NJ, has made significant contributions to the field of motor control systems, holding a total of 11 patents to his name. His work has paved the way for advancements in permanent magnet motor technology, showcasing his talent in engineering and innovation.

Latest Patents

Among his latest patents, Parfomak has developed a "Control System for a Permanent Magnet Motor" that allows for precise control of rotor speed using a dual-polarity pulse width modulation drive signal. This system compares the phase back electromotive force (emf) signal generated in the non-excited winding to a command signal, allowing adjustments to the duty cycle of the drive signal. Additionally, his patent for "Initialization Damping for a Permanent Magnet Motor" addresses the challenges faced during the initialization phase of a gyroscope rotor. By applying an alignment pulse and utilizing the back emf signal from the non-excited winding, the innovation effectively minimizes oscillation, ensuring that the rotor aligns quickly and accurately.

Career Highlights

Parfomak has worked for esteemed companies such as AlliedSignal Inc. and Allied Corporation, where his skills and insights have significantly contributed to the advancements in motor technology. His innovative approach and comprehensive understanding of engineering challenges have led to substantial improvements in the efficiency and functionality of motor systems.

Collaborations

Throughout his career, Walter Parfomak has collaborated with talented individuals such as Jerome Sears and Walter J. Kluss. These collaborations have fostered an environment of innovation, allowing for the exchange of ideas and the development of cutting-edge solutions in the field of motor control.

Conclusion

Walter Parfomak’s dedication to innovation and his impressive portfolio of patents reflect his status as a noteworthy inventor in the realm of motor control systems. His latest patents not only demonstrate his technical expertise but also highlight the potential for future advancements in this essential area of engineering.

Profile summary based on public USPTO records.
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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