This inventor holds 4 USPTO granted patents. Top assignee: U.S. Philips Corporation. Active years: 1981-1984.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Eindhoven, NL (1982 - 1983)
- Roosendaal, NL (1981 - 1984)
Company Filing History:
Years Active: 1981-1984
Title: The Innovative Contributions of Petrus J Willemsen
Introduction
Petrus J Willemsen is a notable inventor based in Roosendaal, Netherlands. He has made significant contributions to the field of lighting technology, particularly in the development of low-pressure mercury vapor discharge lamps. With a total of 4 patents to his name, Willemsen's work has had a considerable impact on photo-therapy applications.
Latest Patents
Willemsen's latest patents include a low-pressure mercury vapor discharge lamp with internal glass fibers. This invention features a tubular discharge vessel that is sealed in a vacuum-tight manner. It incorporates a filamentary body, such as glass wool, which is distributed throughout the discharge vessel to enhance radiance near the electrodes. Another significant patent is a low-pressure mercury vapor discharge lamp designed for photo-therapy. This lamp has a glass discharge tube that is opaque to shorter wavelength ultraviolet radiation and includes a luminescent layer on its inside surface. The luminescent layer is made from a material that emits characteristic lines of gadolinium at 312 nm, while the glass has an absorption edge between 280 and 305 nm. This design aims to produce a useful quantity of radiation effective for photo-therapy while minimizing erythema-producing radiation.
Career Highlights
Willemsen has had a distinguished career at U.S. Philips Corporation, where he has been instrumental in advancing lighting technologies. His innovative designs and patents have contributed to the company's reputation as a leader in the field.
Collaborations
Throughout his career, Willemsen has collaborated with notable colleagues, including Robert C Peters and Willem L Konijnendijk. These partnerships have fostered a creative environment that has led to groundbreaking advancements in lighting technology.
Conclusion
Petrus J Willemsen's contributions to the field of lighting, particularly through his patents on low-pressure mercury vapor discharge lamps, demonstrate his innovative spirit and commitment to improving photo-therapy applications. His work continues to influence the industry and enhance the effectiveness of therapeutic lighting solutions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile