Company Filing History:
9 out of 260 
1 out of 4 
1 out of 832,880 Years Active: 2003-2007
Title: Hiroaki Okamoto: Innovator in Multilayer Printed Wiring Boards
Introduction
Hiroaki Okamoto is a prominent inventor based in Yamaguchi-ken, Japan. He has made significant contributions to the field of electronics, particularly in the development of multilayer printed wiring boards and semiconductor devices. With a total of 10 patents to his name, Okamoto's work has paved the way for advancements in manufacturing processes and product design.
Latest Patents
One of Okamoto's latest patents is for a multilayer printed wiring board and method of manufacturing the same. This innovation features a wiring lead-out port with a signal circuit conductor perfectly covered by an earth circuit. The design allows for the efficient manufacturing of a large number of products with good size reproducibility. The multilayer printed wiring board is produced by selectively etching the copper of a cladding sheet, which is created by bonding a copper foil to a nickel foil with a reduction of 0.1-3%.
Another notable patent is for a semiconductor device and its fabrication method. This method focuses on efficiently and inexpensively creating a chip-size package with an expanded electrode pitch. It involves forming conductor wiring on the electrode forming surface side of a semiconductor chip, which facilitates wiring and bump forming. The semiconductor device comprises semiconductor elements and conductor wirings formed on these elements through the etching of wiring-forming metal foil.
Career Highlights
Throughout his career, Hiroaki Okamoto has worked with various companies, including Toyo Kohan Co., Ltd. His experience in the industry has allowed him to develop innovative solutions that address the challenges faced in electronics manufacturing.
Collaborations
Okamoto has collaborated with notable individuals in his field, including Kinji Saijo and Kazuo Yoshida. These partnerships have contributed to the success of his projects and the advancement of technology in the industry.
Conclusion
Hiroaki Okamoto's contributions to the field of electronics through his patents and innovations have significantly impacted the industry. His work continues to inspire future developments in multilayer printed wiring boards and semiconductor devices.