Company Filing History:
7 out of 22 
2 out of 9,638 
1 out of 847 
Years Active: 1977-1992
Title: The Innovations of Frederic J Kahn
Introduction
Frederic J Kahn is a notable inventor based in Palo Alto, California. He has made significant contributions to the field of liquid crystal technology, holding a total of 11 patents. His work has paved the way for advancements in optical devices and imaging systems.
Latest Patents
Among his latest patents is an "Apparatus for and method of operation of smectic liquid crystal light." This invention involves a liquid crystal light valve that utilizes a layer of liquid crystal for storing image information. It features a photoconductor aligned with the liquid crystal, which is positioned in close proximity to effectuate an electric field across the liquid crystal. The apparatus allows for the simultaneous application of an electric field while optical image information is impinged on the photoconductor. This combination produces a modified electric field across the liquid crystal, effectively impressing the image information into it. Another significant patent is for the "Fabrication of printed wiring boards by projection imaging." This process involves exposing a liquid crystal cell to radiation to create a desired pattern, which is then projected onto a substrate coated with a radiation-sensitive material. The exposure duration is controlled based on light intensity and coating material type, allowing for precise pattern creation.
Career Highlights
Frederic J Kahn has worked with several prominent companies throughout his career, including Greyhawk Systems, Inc. and Hewlett-Packard Company. His experience in these organizations has contributed to his expertise in liquid crystal technologies and imaging systems.
Collaborations
Throughout his career, Kahn has collaborated with notable individuals such as Jerry Leff and David E Stepner. These collaborations have further enriched his work and innovations in the field.
Conclusion
Frederic J Kahn's contributions to liquid crystal technology and imaging systems have had a lasting impact on the industry. His innovative patents and collaborations highlight his role as a significant figure in the field of inventions.