This inventor holds 4 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1978-1987.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1978-1987
Title: Akio Sakazume: Compressor and Air-Conditioning Innovations
Introduction
Akio Sakazume is an inventor associated with Yokohama, Japan, and Hitachi, Ltd. His patent work includes technologies for compressor motors, heat pumps, and compressor lubrication. He holds 4 patents.
Latest Patents
One of Sakazume’s latest patents describes a control system for a compressor motor used in an air-conditioning unit. The system supplies current that generates a non-rotating magnetic field to preheat the compressor, and combines it with current that generates a rotating magnetic field to provide additional heat. This approach is designed to help a heat pump deliver sufficient heat soon after operation begins.
Another patent concerns a rotary compressor with tapered valve ports for a lubricating pump. The compressor uses tapered suction and discharge ports to manage lubricant flow through a pump chamber. Its design also provides a space communicating with the suction port’s narrow section, supporting the compressor’s lubrication arrangement.
Career Highlights
Sakazume’s disclosed inventions address practical challenges in heating and compressor operation. His work includes improving heat delivery at startup and refining lubricant flow in horizontal compressors.
Collaborations
Sakazume is associated with Hitachi, Ltd. His listed coworkers include Hiroshi Iwata and Masahiro Takebayashi.
Conclusion
Akio Sakazume’s patent portfolio reflects engineering work focused on compressor performance, lubrication, and heat-pump operation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile