Company Filing History:
2 out of 6 
1 out of 2,899 
1 out of 15 Years Active: 2007-2008
Title: Nobukazu Koizumi: Innovator in Printed Wiring Board Manufacturing
Introduction
Nobukazu Koizumi is a notable inventor based in Fujisawa, Japan. He has made significant contributions to the field of electrical engineering, particularly in the manufacturing of printed wiring boards and electric devices. With a total of two patents to his name, Koizumi's work reflects a commitment to innovation and technological advancement.
Latest Patents
Koizumi's latest patents include a method for manufacturing printed wiring boards. This method involves several steps, such as providing numerous through holes in a substrate made of insulating material coated with copper foil. The process includes making the inside of the through holes electrically conductive, applying a photosensitive dry film, and developing it as a plating resist. Additionally, the method encompasses copper-plating the inside of the through holes and the surrounding areas, followed by the application of a metal protective film and the formation of a circuit pattern.
Another significant patent is a method for manufacturing electric devices. This method focuses on reducing moisture in a film substrate by heating it to a temperature between 80°C and 100°C before mounting an integrated circuit (IC) on the substrate. These innovations showcase Koizumi's expertise in enhancing manufacturing processes in the electronics industry.
Career Highlights
Throughout his career, Nobukazu Koizumi has worked with prominent companies such as Maruwa Corporation and Seiko Instruments Inc. His experience in these organizations has allowed him to refine his skills and contribute to various projects that push the boundaries of technology.
Collaborations
Koizumi has collaborated with notable colleagues, including Tsutomu Matsuhira and Hideaki Adachi. These partnerships have fostered an environment of creativity and innovation, leading to advancements in their respective fields.
Conclusion
Nobukazu Koizumi stands out as an influential inventor in the realm of electrical engineering. His patents and career achievements reflect a dedication to improving manufacturing techniques and contributing to technological progress. His work continues to inspire future innovations in the industry.