Location History:
- Sagamihara, JP (1991)
- Sohka, JP (2005)
- Tokyo, JP (1992 - 2017)
Company Filing History:
6 out of 2,152 
3 out of 338 
3 out of 5,294 
Years Active: 1991-2017
Title: Masato Shimamura: Innovator in Solder Technology
Introduction
Masato Shimamura is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of solder technology, particularly in developing lead-free solder alloys and low-temperature soldering methods. With a total of 9 patents to his name, Shimamura's work has had a substantial impact on the electronics industry.
Latest Patents
One of Shimamura's latest patents involves a lead-free solder alloy. This innovative solder alloy consists of 0.2-1.2 mass % of silver (Ag), 0.6-0.9 mass % of copper (Cu), 1.2-3.0 mass % of bismuth (Bi), 0.02-1.0 mass % of antimony (Sb), 0.01-2.0 mass % of indium (In), with the remainder being tin (Sn). This composition allows for the creation of portable devices that exhibit excellent resistance to drop impacts and heat cycle properties, even in extreme temperature conditions.
Another notable patent is a soldering method using a low-temperature solder paste. This method addresses the brittleness of solder compositions close to a SnBi eutectic composition, which often leads to interface peeling and device destruction in small electronic devices. By diffusing at least one type of solder composition, such as Sn-Ag, Sn-Cu, or Sn-Ag-Cu, into the solder paste, the resistance to drop impacts is significantly improved.
Career Highlights
Throughout his career, Masato Shimamura has worked with notable companies, including Japan Aviation Electronics Industry, Limited and Senju Metal Industry Co., Ltd. His expertise in solder technology has positioned him as a key figure in the development of advanced soldering solutions for electronic devices.
Collaborations
Shimamura has collaborated with esteemed colleagues, including Hiroyuki Sasaki and Juichi Noda. These partnerships have further enhanced his innovative contributions to the field.
Conclusion
Masato Shimamura's work in solder technology exemplifies the importance of innovation in the electronics industry. His patents and advancements continue to influence the design and durability of electronic devices, ensuring they meet the demands of modern technology.