Company Filing History:
Years Active: 1988-1990
Title: Innovations of Yoshihiro Harakawa
Introduction
Yoshihiro Harakawa is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of solid electrolytic capacitors, holding a total of four patents. His work focuses on advanced manufacturing methods that enhance the performance and reliability of electronic components.
Latest Patents
Harakawa's latest patents include a method of manufacturing a solid electrolytic capacitor. This invention features a capacitor element that comprises a metal plate capable of having a dielectric oxidation layer formed thereon. The design includes a dielectric oxidation layer on the metal plate's surface, a polymer layer of a heterocyclic compound, and a conductive layer. Notably, the polymer layer near a defect interface of the dielectric oxidation layer is converted into an insulator, with terminals provided on the metal plate and conductive layer. Another significant patent is a method of manufacturing an organic semiconductor solid electrolytic capacitor. This method involves forming a conductive polymer thin film layer of a heterocyclic compound on a metal substrate with a dielectric oxide film. The process utilizes electrolytic oxidation polymerization in an electrolytic solution containing specific heterocyclic compounds and supporting electrolytes.
Career Highlights
Throughout his career, Harakawa has worked with reputable companies, including Nitsuko Corporation and Niksuko Corporation. His experience in these organizations has allowed him to develop and refine his innovative techniques in capacitor manufacturing.
Collaborations
Some of his notable coworkers include Koji Izawa and Hidemitsu Takeuchi. Their collaboration has contributed to the advancement of technology in the field of solid electrolytic capacitors.
Conclusion
Yoshihiro Harakawa's contributions to the field of solid electrolytic capacitors through his innovative patents and collaborations highlight his importance as an inventor. His work continues to influence the development of electronic components, showcasing the impact of his inventions on the industry.