This inventor holds 2 USPTO granted patents. Top assignee: Tamura Kaken Co., Ltd.. Active years: 1998-2000.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1998-2000
Title: Kohichi Ishida: Innovator in Photosensitive Resin Compositions
Introduction
Kohichi Ishida is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of photosensitive resin compositions, particularly in applications related to circuit substrates. With a total of 2 patents, Ishida's work has garnered attention for its innovative approach to improving soldering processes.
Latest Patents
Ishida's latest patents focus on photosensitive resin compositions and the cured films derived from them. These compositions are designed to enhance the soldering process by utilizing a washing-free yet low-residue type of flux. This innovation allows for soldering to be performed without the presence of solder balls on circuit substrates. The photosensitive resin composition includes a photopolymerizable and photosensitive resin that contains at least one of a carboxyl group and an onium group, along with a photopolymerizable reactive diluent, a photopolymerization initiator, a thermosetting component, and an inorganic powder with an average particle size ranging from 2 µm to 20 µm. The resulting cured film serves as a solder resist film, improving various properties such as heat and chemical resistance, while also allowing for development using only water when the onium group is present.
Career Highlights
Kohichi Ishida is associated with Tamura Kaken Co., Ltd., where he has been able to apply his expertise in the development of advanced materials. His work has contributed to the reliability and productivity of circuit substrate fabrication, making significant strides in the electronics industry.
Collaborations
Ishida has collaborated with notable coworkers, including Makoto Yanagawa and Rinzo Tachibana. Their combined efforts have furthered the advancements in the field of photosensitive materials.
Conclusion
Kohichi Ishida's innovative work in photosensitive resin compositions has made a lasting impact on the electronics industry. His patents reflect a commitment to enhancing soldering processes and improving the reliability of circuit substrates.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile