This inventor holds 2 USPTO granted patents. Top assignees: Etat Francais Represente Par Le Ministre, France Telecom Etablissement Autonome De Droit Public. Active years: 1991-1993.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
1 out of 1 
1 out of 60 
Years Active: 1991-1993
Title: Jean Landreau: Innovator in Anti-Reflection Coatings
Introduction
Jean Landreau is a notable inventor based in Antony, France. He has made significant contributions to the field of semiconductor technology, particularly in the area of anti-reflection coatings. With a total of 2 patents to his name, Landreau's work has had a considerable impact on the development of efficient laser amplifiers.
Latest Patents
Landreau's latest patents include a "Process and apparatus for the deposition of anti-reflection coatings" and a "Method to control the thickness of an antireflection coating." The first patent describes a method and apparatus for depositing and measuring anti-reflective coatings on non-resonating semiconductor laser amplifiers. In this process, two faces of the amplifier alternately receive sputtered material in small quantities. The semiconducting structure is supplied with a constant current, and the voltage is measured at the terminals. The voltage increases as coatings are deposited, reaching a maximum at the reflectivity minimum, at which point the deposition is halted. The second patent outlines a method for controlling the thickness of an antireflection coating, where the semi-conductive structure is fed with a constant current, and the voltage is measured to determine the optimal thickness based on reflectivity.
Career Highlights
Throughout his career, Jean Landreau has worked with prominent organizations, including the French State represented by the Minister and France Telecom, an autonomous public establishment. His expertise in semiconductor technology has been instrumental in advancing the field.
Collaborations
One of his notable collaborators is Hisao Nakajima, with whom he has worked on various projects related to semiconductor technology.
Conclusion
Jean Landreau's innovative work in anti-reflection coatings has significantly contributed to the advancement of semiconductor laser technology. His patents reflect a deep understanding of the complexities involved in this field, showcasing his role as a key inventor in the industry.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile