This inventor holds 2 USPTO granted patents. Top assignees: Matsushita Electric Industrial Co., Ltd., Nippon Oil Company. Active years: 1981-1982.
Location History:
- Kadoma, JP (1981)
- Kusatsu, JP (1982)
Company Filing History:

Years Active: 1981-1982
Title: The Innovations of Kaichi Yamada
Introduction
Kaichi Yamada is a notable inventor based in Kadoma, Japan. He has made significant contributions to the field of rotary compressors, holding 2 patents that showcase his innovative spirit and technical expertise. His work has had a lasting impact on refrigeration technology.
Latest Patents
Yamada's latest patents include a rotary vane compressor with valve control of oil to bias the vanes. This invention features an improved vane type rotary compressor equipped with a control mechanism for the lubricating oil supply passage. This mechanism ensures that the oil supply passage is opened during the compressor's operation and closed during shut-down, allowing for sufficient lubrication while preventing reverse rotation. Another significant patent is for refrigeration lubricating oil compositions. This oil composition is designed for effective lubrication of rotary-type compressors used in refrigeration equipment. It primarily consists of a polyglycol oil blended with specific additives, including glycidyl ether type epoxy compounds and epoxidized vegetable oils.
Career Highlights
Throughout his career, Yamada has worked with prominent companies such as Matsushita Electric Industrial Co., Ltd. and Nippon Oil Company. His experience in these organizations has contributed to his development as an inventor and has provided him with valuable insights into the industry.
Collaborations
Yamada has collaborated with several talented individuals, including Yoshiyuki Morikawa and Umekichi Sasaki. These partnerships have likely fostered a creative environment that has led to innovative solutions in their respective fields.
Conclusion
Kaichi Yamada's contributions to the field of rotary compressors and refrigeration technology are commendable. His patents reflect a deep understanding of engineering principles and a commitment to innovation. His work continues to influence the industry and inspire future inventors.