This inventor holds 7 USPTO granted patents. Top assignee: University of California. Active years: 1989-1998.
Location History:
- Simi Valley, CA (US) (1989)
- Westlake Village, CA (US) (1990 - 1998)
Company Filing History:
Years Active: 1989-1998
Title: The Innovative Contributions of Hans J. Doerr
Introduction
Hans J. Doerr is a notable inventor based in Westlake Village, CA (US). He has made significant contributions to the field of materials science, particularly in the development of diamond films. With a total of 7 patents, his work has paved the way for advancements in semiconductor technology and electron emission.
Latest Patents
One of his latest patents is the "Plasma Enhanced Chemical Transport Process for Forming Diamond Films." This innovative process utilizes a plasma formed in a substantially oxygen-free hydrogen environment to create microcrystalline diamond films at relatively low deposition temperatures. The process operates at 80 to 180 Torr and a current density of about 1 amp/cm² of substrate, allowing for the deposition of films on large areas. The resulting doped diamond films exhibit a well-faceted microcrystalline structure, functioning as both n-type and p-type semiconductors.
Another significant patent is the "Diamond Thin Film Electron Emitter." This invention involves doped and undoped polycrystalline and noncrystalline diamond films that emit electrons into a vacuum when subjected to an electrical field. The required field for emission is notably low, with doped polycrystalline films needing less than 20 V/μm, while undoped nanocrystalline films can operate at 5 to 8 volts/μm. These materials demonstrate continuous emission properties across the entire surface of the film.
Career Highlights
Throughout his career, Hans J. Doerr has worked with prestigious institutions, including the University of California and The Regents of the University of California. His research has significantly impacted the field of diamond film technology, leading to practical applications in electronics and materials science.
Collaborations
Hans has collaborated with notable individuals in his field, including Rointan F. Bunshah and Shyankay R. Jou. Their combined expertise has contributed to the advancement of diamond film technologies and their applications.
Conclusion
Hans J. Doerr's innovative work in the development of diamond films and electron emitters has established him as a prominent figure in materials science. His patents reflect a commitment to advancing technology and enhancing the capabilities of semiconductor materials.