Richard C Keezer

Title: Richard C. Keezer: Optical Storage and Materials Patents

Introduction

Richard C. Keezer is an inventor associated with Los Altos, California, and Xerox Corporation. His work includes inventions in optical information storage and chemical materials. He holds 4 patents.

Latest Patents

One of Keezer’s patents, “Optical Storage Medium Using the Frequency Domain,” describes an optical medium that stores information through optical interference. Heating selected areas permanently changes the wavelength and intensity of interference fringes, producing reflectivity changes that create a detectable optical pattern. The patent identifies alloys from the Ge-Se-S-Te group layered over a metallic surface as preferred materials.

Another patent, “Method for the Preparation of X-Form Metal-Free Phthalocyanine,” presents a process for producing X-form metal-free phthalocyanine and related compounds. The method heats another metal-free phthalocyanine polymorph or compound to approximately 540–580°C, then cools the resulting product.

Career Highlights

Keezer’s listed work connects optical storage technology with materials science and chemical processing. His patents describe approaches to recording information through changes in optical properties and preparing a specific form of metal-free phthalocyanine.

Collaborations

Keezer’s listed coworkers include Clifford H. Griffiths and Ronald H. Geils. His work is associated with Xerox Corporation.

Conclusion

Richard C. Keezer’s patent record reflects contributions to optical information storage and materials preparation, with inventions associated with Xerox Corporation.