Location History:
- Itami, JP (1989 - 1997)
- Tokyo, JP (1998 - 2001)
Company Filing History:
Years Active: 1989-2001
Title: Yuji Ohkura: Innovator in Semiconductor Laser Technology
Introduction
Yuji Ohkura, based in Tokyo, Japan, is an accomplished inventor recognized for his significant contributions to the field of semiconductor technology. With a total of 11 patents to his name, he is a leading figure in the innovation of high-power semiconductor laser devices.
Latest Patents
Ohkura's latest patents include a groundbreaking semiconductor laser device and the process for manufacturing it. This device features a forward mesa ridge-embedded design that provides high power output. The innovative structure includes a base portion of a forward mesa ridge with a narrow width that stabilizes transverse mode oscillation, along with an upper cladding layer designed to reduce beam loss.
Another notable patent is the semiconductor laser diode that comprises a p-type GaAs semiconductor substrate. This invention incorporates a p-type region with a p-type AlGaAs lower cladding layer, an active layer, and an n-type region with an n-type AlGaAs upper cladding layer. Notably, the n-type AlGaAs upper cladding is made with a carrier concentration tailored for optimal performance.
Career Highlights
Yuji Ohkura is currently associated with Mitsubishi Electric Corporation, a renowned leader in electrical and electronic equipment. His work at Mitsubishi has positioned him at the forefront of semiconductor innovation, driving forward the capabilities of laser technology.
Collaborations
Throughout his career, Ohkura has collaborated closely with fellow innovators, including Motoharu Miyashita and Hirotaka Kizuki. Their collective efforts have led to advancements in the field and the successful development of numerous patent applications.
Conclusion
Yuji Ohkura's contributions to semiconductor laser technology exemplify the cutting-edge innovations being developed in Japan. With his extensive patent portfolio and collaboration with esteemed colleagues, Ohkura continues to shape the future of laser devices, enhancing their efficiency and application across various sectors.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.