This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignees: Taiho Kogyo Co., Ltd., Denso Corporation. Active years: 1996-2011.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 288 
1 out of 20,407 
Years Active: 1996-2011
Title: Hiroaki Hayakawa: Innovator in Lead-Free Bearing Technology
Introduction
Hiroaki Hayakawa is a notable inventor based in Aichi, Japan. He has made significant contributions to the field of materials science, particularly in the development of lead-free bearing technologies. With a total of two patents to his name, Hayakawa's work is recognized for its innovative approach to enhancing the performance of fuel injection systems.
Latest Patents
One of Hayakawa's latest patents is focused on a lead-free bearing used for fuel-injection pumps. This invention utilizes a Cu–Bi based sintered alloy, which incorporates hard particles such as FeP. The main components of the microstructure include a Cu matrix, Bi phase, and hard particles. The sintering method he developed suppresses the flow of the Bi phase to a minimal level. The novel structure ensures that the contact between the Bi phase and hard particles is maintained at a low ratio. The lead-free bearing contains between 1 to 30 mass % of Bi and from 0.1 to 10 mass % of hard particles with an average particle diameter ranging from 10 to 50 micrometers, with the balance being Cu and unavoidable impurities. This innovative design allows the sliding properties to be comparable to those of traditional Pb-containing Cu-based sintered alloys.
Career Highlights
Throughout his career, Hayakawa has worked with prominent companies in the automotive and manufacturing sectors. Notable among these are Taiho Kogyo Co., Ltd. and Denso Corporation. His experience in these organizations has contributed to his expertise in developing advanced materials for automotive applications.
Collaborations
Hayakawa has collaborated with several professionals in his field, including Keiichi Shimasaki and Hiroshi Ito. These partnerships have facilitated the exchange of ideas and innovations, further enhancing the impact of his work.
Conclusion
Hiroaki Hayakawa's contributions to lead-free bearing technology exemplify his commitment to innovation in materials science. His patents reflect a significant advancement in the performance of fuel injection systems, paving the way for more environmentally friendly solutions in the automotive industry.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile