Location History:
- Sakai, JP (1994 - 2000)
- Osaka, JP (1994 - 2002)
Company Filing History:
4 out of 4,279 
2 out of 140 
Years Active: 1994-2002
Title: Shigeki Hagiwara: Innovator in Scroll Compressor Technology
Introduction
Shigeki Hagiwara is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of compressor technology, holding a total of 5 patents. His innovative designs have advanced the efficiency and functionality of scroll compressors, which are widely used in various applications.
Latest Patents
One of Hagiwara's latest patents is a multi-stage capacity-controlled scroll compressor. This invention features a first bypass valve that sets the discharge capacity to 60% in the first scroll of an asymmetrical spiral-type scroll compressor. Additionally, a second bypass valve is provided outside the scroll, allowing communication between the suction and discharge sides to set the compressor load to 50%. By manipulating these valves, the effective load of the compressor can be adjusted to 100%, 60%, or 30%, depending on the operational requirements.
Career Highlights
Throughout his career, Hagiwara has worked with notable companies such as Daikin Industries, Ltd. and Arthur D. Little, Inc. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking advancements in compressor technology.
Collaborations
Hagiwara has collaborated with esteemed colleagues, including Yoshitaka Shibamoto and Hiromichi Ueno. These partnerships have fostered a creative environment that has led to innovative solutions in the field.
Conclusion
Shigeki Hagiwara's contributions to scroll compressor technology exemplify his dedication to innovation and efficiency. His patents reflect a deep understanding of mechanical engineering and a commitment to advancing the industry.