Location History:
- Hitachi, JA (1977)
- Hitachi, JP (1978 - 1999)
Company Filing History:
14 out of 1,641 
4 out of 42,485 
Years Active: 1977-1999
Title: Toshiaki Ishimaru: Innovator in Printed Circuit Board Technology
Introduction
Toshiaki Ishimaru is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of printed circuit board technology, holding a total of 16 patents. His innovative approaches have simplified production processes and improved the efficiency of manufacturing.
Latest Patents
Ishimaru's latest patents include a process for producing printed wiring boards. This additive process utilizes a developer that comprises a chlorine-free organic solvent and an alkaline aqueous solution. By employing a copolymer of methacrylic acid and methyl methacrylate as the resist material, the production steps are simplified, even for large-area substrates. Another notable patent is a method for manufacturing printed circuit boards. This method involves forming a wiring pattern through chemical metal plating using a negative pattern made from a photosensitive resin composition layer as the plating resist. The photosensitive resin includes a linear high polymer and an organic compound, enhancing the manufacturing process.
Career Highlights
Throughout his career, Toshiaki Ishimaru has worked with notable companies such as Hitachi Chemical Company, Ltd. and Hitachi, Ltd. His experience in these organizations has allowed him to develop and refine his innovative techniques in printed circuit board technology.
Collaborations
Ishimaru has collaborated with esteemed colleagues, including Nobuyuki Hayashi and Katsushige Tsukada. These partnerships have contributed to the advancement of technology in their field.
Conclusion
Toshiaki Ishimaru's contributions to printed circuit board technology through his patents and collaborations highlight his role as a key innovator in the industry. His work continues to influence manufacturing processes and improve efficiency in electronics.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.