San Diego, CA, United States of America

William J Walsh

This inventor holds 3 USPTO granted patents and 1 published patent application. Top assignee: Hewlett-Packard Company. Active years: 1988-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: William J Walsh. Retrieved from https://idiyas.com/inventor/william-j-walsh-lksxzcf4

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

Calculating rank
USPTO Granted Patents = 3 

% Patents Active = 100.0

Average Co-Inventor Count = 1.8

ph-index = 3

Forward Citations = 171(Granted Patents)


Location History:

  • San Diego, CA (US) (1988)
  • Baltimore, MD (US) (1991)

Company Filing History:


Years Active: 1988-1991

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3 patents (USPTO):Explore Patents

Title: The Innovations of William J Walsh

Introduction

William J Walsh is a notable inventor based in San Diego, CA. He has made significant contributions to the field of technology, particularly in the area of thermal inkjet printheads. With a total of 3 patents to his name, Walsh has demonstrated a commitment to innovation and problem-solving in his work.

Latest Patents

Among his latest patents is the "Dropper tip or similar article," which showcases his ingenuity in design and functionality. Another significant patent is related to "Thermal inkjet printhead temperature control." This invention provides a temperature control system that responds to printhead temperature. In cases of overheating, the system selectively causes the printhead to stand idle or shifts to a cooler nozzle. This innovative approach ensures that the printing process remains efficient, even when faced with potential issues such as nozzle blockage due to evaporated dye transport agents. The system employs warm-up pulsing and nozzle spitting to clear the nozzles, ensuring optimal performance before beginning any printing operation.

Career Highlights

William J Walsh is currently employed at Hewlett-Packard Company, where he continues to develop and refine his inventions. His work at HP has allowed him to be at the forefront of technological advancements in printing technology.

Collaborations

Throughout his career, Walsh has collaborated with talented individuals such as James C Smith and Hatem E Mostafa. These partnerships have contributed to the success of his projects and innovations.

Conclusion

William J Walsh's contributions to the field of thermal inkjet technology highlight his innovative spirit and dedication to improving printing processes. His patents reflect a deep understanding of the challenges faced in the industry and offer practical solutions that enhance performance.

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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