This inventor holds 4 USPTO granted patents. Top assignee: U.S. Philips Corporation. Active years: 1978-1987.
Company Filing History:
Years Active: 1978-1987
Title: The Innovations of Petrus J Janssen
Introduction
Petrus J Janssen is a notable inventor based in Eindhoven, Netherlands. He has made significant contributions to the field of optical fibers, holding a total of 4 patents. His work has advanced the technology used in fiber optics, which is crucial for telecommunications and data transmission.
Latest Patents
Janssen's latest patents include a groundbreaking design for a glass optical fiber that features both a primary and a secondary coating. The primary coating consists of two layers, with a total thickness of 50-70 µm. The first layer is made of UV cured acrylate resin, which has a modulus of elasticity at 25°C of less than or equal to 5 N/mm². The second layer is also a UV cured acrylate resin, but it has a modulus of elasticity at 25°C ranging from 25 to 1500 N/mm². The ratio of the thickness of the first layer to the second layer is maintained between 0.5 and 2. Another significant patent involves a method and device for drawing optical fibers from a solid preform, which consists primarily of SiO₂ and doped SiO₂. This method ensures that the fiber is guided through a space with a laminar gas flow to minimize temperature drops and prevent extra stresses during cooling.
Career Highlights
Petrus J Janssen is associated with U.S. Philips Corporation, where he has been instrumental in developing innovative optical fiber technologies. His expertise in the field has led to advancements that enhance the performance and reliability of optical fibers.
Collaborations
Janssen has collaborated with notable colleagues, including Victor A Van Der Hulst and Peter C Janssens. These partnerships have contributed to the successful development of his patented technologies.
Conclusion
Petrus J Janssen's contributions to optical fiber technology have made a lasting impact on the industry. His innovative patents and collaborations reflect his dedication to advancing the field of telecommunications.