This inventor holds 3 USPTO granted patents and 1 published patent application. Top assignees: National Institute of Advanced Industrial Science and Technology, Japan Science and Technology Agency, Japan Science and Technology Corporation. Active years: 2006-2010.
Location History:
- Ibaraki, JP (2007)
- Tsukuba, JP (2006 - 2010)
Company Filing History:
3 out of 1,762 
1 out of 1,328 
1 out of 373 
Years Active: 2006-2010
Title: Takeyoshi Sugaya: Innovator in Negative Resistance Field Effect Devices
Introduction
Takeyoshi Sugaya is a prominent inventor based in Tsukuba, Japan. He has made significant contributions to the field of electronics, particularly in the development of negative resistance field effect devices. With a total of 3 patents to his name, Sugaya's work has advanced the understanding and application of high-frequency oscillation devices.
Latest Patents
Sugaya's latest patents include innovative designs for negative resistance field effect devices. One of his notable inventions is a 3-terminal negative differential resistance field effect element that boasts high output and frequency characteristics while requiring low power consumption. This device utilizes a compound hetero structure and forms a dual channel layer by connecting a high-transfer degree quantum well layer to a low-transfer degree quantum dot layer via a barrier layer on a substrate. The element operates by changing a carrier accelerated by a drain voltage from a high-transfer degree channel to a low-transfer degree channel, thereby exhibiting negative differential resistance for the drain current.
Another significant patent is a negative resistance field-effect element capable of achieving negative resistance at low power supply voltages. This invention is formed on an InP substrate with an asymmetrical V-groove and includes an InAlAs barrier layer. The design features an InGaAs quantum wire that serves as a high-mobility channel, allowing for the development of a negative resistance field-effect element that operates effectively at low power supply voltages.
Career Highlights
Throughout his career, Takeyoshi Sugaya has worked with esteemed organizations such as the National Institute of Advanced Industrial Science and Technology and the Japan Science and Technology Corporation. His work in these institutions has allowed him to push the boundaries of electronic device technology.
Collaborations
Sugaya has collaborated with notable colleagues, including Mutsuo Ogura and Kee-Youn Jang. These partnerships have contributed to the advancement of his research and the successful development of his patents.
Conclusion
Takeyoshi Sugaya's innovative work in the field of negative resistance field effect devices has made a significant impact on electronics. His patents reflect a deep understanding of complex electronic systems and a commitment to advancing technology.