Company Filing History:
Years Active: 1986-1989
Title: Innovations of Johannes T Van Roosmalen
Introduction
Johannes T Van Roosmalen is a notable inventor based in Eindhoven, Netherlands. He has made significant contributions to the field of display technology, particularly in the manufacturing of color display tubes. With a total of 2 patents to his name, his work has had a lasting impact on the industry.
Latest Patents
One of his latest patents is a method of manufacturing a color display tube that utilizes a magnetic quadrupole post-focusing mask. This innovative method involves magnetizing the mask using magnetic field shaping means made of soft iron or a magnetic equivalent. The raised portions, such as strips placed against opposite sides of the mask sheet, are subjected to an external strong magnetic field by an electromagnet. This process induces magnetic poles through the thickness of the mask sheet, allowing the entire area to be magnetized in one operation. Additionally, he has developed a cathode-ray tube that features a ferromagnetic plate with numerous apertures, which forms a magnetic quadrupole lens in each aperture.
Career Highlights
Johannes T Van Roosmalen has worked with U.S. Philips Corporation, where he has been able to apply his innovative ideas in practical applications. His work has contributed to advancements in display technology, enhancing the quality and efficiency of color display tubes.
Collaborations
He has collaborated with notable coworkers such as Johannes T Klomp and Robert H Fastenau, further enriching his contributions to the field.
Conclusion
Johannes T Van Roosmalen's innovative work in the manufacturing of color display tubes has established him as a significant figure in the field of display technology. His patents reflect a commitment to advancing technology and improving product quality.