Company Filing History:
3 out of 5 
1 out of 8 Years Active: 2012-2017
Title: David Francois Guillou: Innovator in MEMS Resonator Technology
Introduction
David Francois Guillou is a notable inventor based in Pittsburgh, PA (US), recognized for his contributions to the field of microelectromechanical systems (MEMS) resonators. He holds a total of four patents, showcasing his innovative approach to solving complex engineering challenges.
Latest Patents
Among his latest patents is the "Temperature drift compensation of MEMS resonators." This invention involves a resonator device that incorporates a piezoelectric material and at least one electrode. The device is designed with a material that has a positive coefficient of stiffness, which is strategically placed as an electrode or as a separate layer adjacent to the piezoelectric material. The temperature compensating material is selected from a group that includes ferromagnetic metal alloys, shape-memory metal alloys, and polymers, ensuring optimal performance under varying temperature conditions.
Another significant patent is the "Protected resonator," which describes a bulk acoustic wave resonator structure that effectively isolates the core resonator from environmental and aging effects. This innovative structure features a piezoelectric layer positioned between two electrodes, providing protection against contamination and package leaks. The design includes protective elements that limit aging effects, ensuring the resonator's stability across its entire bandwidth.
Career Highlights
David has worked with several companies, including Cymatics Laboratories Corp. and Resonance Semiconductor Corporation. His experience in these organizations has contributed to his expertise in MEMS technology and resonator design.
Collaborations
Throughout his career, David has collaborated with talented individuals such as Rajarishi Sinha and Anthony Tsangaropoulos, further enhancing his innovative capabilities and expanding his professional network.
Conclusion
David Francois Guillou is a distinguished inventor whose work in MEMS resonators has made a significant impact in the field. His patents reflect a deep understanding of engineering principles and a commitment to advancing technology.
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