Location History:
- Santa Rosa, CA (US) (2002 - 2006)
- Windsor, CA (US) (2007 - 2009)
Company Filing History:
2 out of 92 
2 out of 144 
2 out of 851 
Years Active: 2002-2009
Title: Innovations of Donald M Friedrich
Introduction
Donald M Friedrich is a notable inventor based in Windsor, CA, who has made significant contributions to the field of optical waveguide devices. With a total of six patents to his name, Friedrich's work has advanced the manufacturing processes and verification systems for optical technologies.
Latest Patents
Friedrich's latest patents include a wafer scale method of manufacturing optical waveguide devices. This invention focuses on a process that achieves sub-micron control of an optical waveguiding layer thickness. It involves creating a dimensionally stable wafer assembly that allows for the introduction of adhesive without altering the planar relationship between a carrier wafer and an optically transmissive wafer. This innovative process enables the wafer scale manufacture of optical waveguide devices, including thin optically transmissive layers. Another significant patent is for an automated verification system for authenticating objects with optical security features. This system includes an optical setup, a transport staging apparatus, and an analyzing device that verifies the authenticity of objects by analyzing the optical characteristics of light beams at various angles and wavelengths.
Career Highlights
Throughout his career, Friedrich has worked with reputable companies such as Flex Products, Inc. and Optical Coating Laboratory, Inc. His experience in these organizations has contributed to his expertise in optical technologies and manufacturing processes.
Collaborations
Friedrich has collaborated with notable professionals in the field, including Paul G Coombs and Ken D Cardell. These collaborations have likely enriched his work and led to further innovations in optical devices.
Conclusion
Donald M Friedrich's contributions to the field of optical waveguide devices and verification systems highlight his innovative spirit and technical expertise. His patents reflect a commitment to advancing technology in optical manufacturing and security.