This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignee: Hewlett-Packard Company. Active years: 1985-1990.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1985-1990
Title: Harold W. Levie: Innovator in Thermal Ink Jet Technology
Introduction
Harold W. Levie is a notable inventor based in Livermore, CA, who has made significant contributions to the field of thermal ink jet technology. With a total of 2 patents, Levie's work has focused on enhancing the efficiency and reliability of ink jet printing systems.
Latest Patents
One of Levie's latest patents is titled "Ink jet head incorporating a thick unpassivated TaAl resistor." This invention features a thermal ink jet head that incorporates bubble-generating resistors made from a relatively thick layer of unpassivated resistive material, such as TaAl. The design includes an ink source, ink channels, respective orifices, and circuitry that provides the electrical energy necessary for the resistors to generate heat, forming bubbles that expel ink through the orifices. The preferred thickness range for the resistive material is between 3,000 .ANG. and 5,000 .ANG., which minimizes failure rates while addressing thermal, electrical, and manufacturing limitations associated with passivated resistors.
Another significant patent by Levie is "Barriers for thermal ink jet printers." This patent presents a thermal ink jet print head with an innovative barrier design. Each resistor is partially surrounded by two barriers that are spaced apart to create ink feed channels. This arrangement imparts angular momentum to the ink relative to the resistor during the refill process, enhancing the overall performance of the ink jet system.
Career Highlights
Harold W. Levie has had a distinguished career at Hewlett-Packard Company, where he has been instrumental in advancing ink jet technology. His expertise and innovative approach have led to the development of key technologies that have improved the functionality and reliability of ink jet printers.
Collaborations
Throughout his career, Levie has collaborated with notable colleagues, including Alfred I. Pan and Howard H. Taub. These collaborations have contributed to the successful development of various technologies in the field of thermal ink jet printing.
Conclusion
Harold W. Levie's contributions to thermal ink jet technology have significantly impacted the printing industry. His innovative patents and collaborative efforts continue to influence advancements in this field.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile