Location History:
- Livermore, Alameda County, CA (US) (2000)
- Livermore, CA (US) (1985 - 2003)
Company Filing History:
3 out of 75 
1 out of 1,765 
1 out of 3,975 
Years Active: 1985-2003
Title: Innovations of Richard H Stulen
Introduction
Richard H Stulen is a notable inventor based in Livermore, CA (US). He has made significant contributions to the field of optics, particularly in extreme ultraviolet lithography. With a total of 6 patents to his name, Stulen's work has advanced the technology used in lithographic applications.
Latest Patents
Stulen's latest patents include groundbreaking innovations such as a self-cleaning optic for extreme ultraviolet lithography. This invention features a multilayer reflective optic or mirror designed to continuously clean carbon deposits from its surface. The cleaning process utilizes a metal capping layer that is oxidation resistant and capable of transmitting at least 90% of incident EUV radiation. The materials used for this capping layer include Ru, Rh, Pd, Ir, Pt, and Au, among others. Another significant patent addresses the mitigation of radiation-induced surface contamination. This process involves introducing a gas or a mixture of gases into the environment of surfaces exposed to radiation, effectively eliminating contaminants and degradation.
Career Highlights
Throughout his career, Richard H Stulen has worked with prominent organizations such as EUV LLC and Sandia Corporation. His expertise in optics and lithography has positioned him as a key figure in the development of advanced technologies in these fields.
Collaborations
Stulen has collaborated with notable individuals in his field, including Leonard Elliott Klebanoff and William C Sweatt. These partnerships have contributed to the success of his innovative projects and patents.
Conclusion
Richard H Stulen's contributions to the field of optics and lithography are significant and impactful. His innovative patents and collaborations highlight his expertise and dedication to advancing technology.