Tehachapi, CA, United States of America

Clifford K Friend

This inventor holds 5 USPTO granted patents. Top assignee: Xerox Corporation. Active years: 1981-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Clifford K Friend. Retrieved from https://idiyas.com/inventor/clifford-k-friend

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


% Patents Active = 100.0

Average Co-Inventor Count = 2.1

ph-index = 3

Forward Citations = 36(Granted Patents)


Location History:

  • Tarzana, CA (US) (1981)
  • Pittsford, NY (US) (1993 - 1994)
  • Tehachapi, CA (US) (1996 - 2000)

Company Filing History:


Years Active: 1981-2000

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5 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Clifford K. Friend

Introduction

Clifford K. Friend is a notable inventor based in Tehachapi, CA (US). He has made significant contributions to the field of technology, particularly in the area of acoustic systems and power supply circuits. With a total of 5 patents to his name, his work has had a considerable impact on various applications, especially in printing technology.

Latest Patents

One of his latest patents is the "Acoustic Transfer Assist Driver System." This invention features a piezoelectric acoustic transducer designed for a printer photoreceptor toner transfer assist system. The system operates by utilizing a driver circuit that automatically varies its frequency to detect the resonant frequency of the transducer. This innovative approach allows for enhanced efficiency in the toner transfer process.

Another significant patent is the "Power Supply Topology Enabling Bipolar Voltage Output from a Single." This power supply circuit converts an A.C. signal into an output that combines both A.C. and D.C. voltage components. By employing a voltage doubler topology with transistors, the circuit can adjust the duty cycle of pulses to create the necessary voltage signals for controlling the operation of a scavengeless developer in a xerographic machine.

Career Highlights

Clifford K. Friend has spent a considerable part of his career at Xerox Corporation, where he has been able to apply his innovative ideas and technical expertise. His work has contributed to advancements in printing technology, making processes more efficient and effective.

Collaborations

Throughout his career, Clifford has collaborated with notable colleagues, including Robert J. Mead and David W. Richmond. These collaborations have fostered an environment of innovation and creativity, leading to the development of groundbreaking technologies.

Conclusion

Clifford K. Friend's contributions to technology through his patents and work at Xerox Corporation highlight his role as a significant inventor in the field. His innovative solutions continue to influence advancements in printing technology and beyond.

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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