This inventor holds 3 USPTO granted patents. Top assignees: Ushio Denki Kabushiki Kaisha, Ushio Research Institute of Technology Inc.. Active years: 1999-2004.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Himeji, JP (1999)
- Oyama, JP (2003 - 2004)
Company Filing History:
2 out of 840 
1 out of 1 Years Active: 1999-2004
Title: Tatushi Igarashi: Innovator in Gas Laser Technology
Introduction
Tatushi Igarashi is a prominent inventor based in Oyama, Japan. He has made significant contributions to the field of laser technology, holding a total of 3 patents. His work focuses on developing advanced gas laser devices that enhance performance and efficiency.
Latest Patents
Igarashi's latest patents include a gas laser device designed to produce stable oscillation at high repetition rates of 4 kHz. This innovative device features a laser chamber filled with laser gas, main discharge electrodes, and a cross-flow fan that circulates the gas within the chamber. The design ensures that the diameter of the cross-flow fan is 150 mm or less, with a peripheral speed of 25.0 m/s or more.
Another notable patent is the narrow beam ArF excimer laser device. This invention relates to a semiconductor exposure ArF excimer laser device that achieves a narrow line width, containing 95% of the energy at 1.15 pm or less. The device utilizes a line-narrowing optical system formed of an echelle diffraction grating in a Littrow arrangement, along with a beam expansion prism system composed of at least three prisms. The specifications of this device include a blaze angle of 82° or less and a resonator length ranging from 1000 to 1350 mm.
Career Highlights
Throughout his career, Igarashi has worked with notable companies such as Ushio Denki Kabushiki Kaisha and Ushio Research Institute of Technology Inc. His experience in these organizations has contributed to his expertise in laser technology and innovation.
Collaborations
Igarashi has collaborated with esteemed colleagues, including Yoshihisa Yokokawa and Tatuhiro Hiraoka. These partnerships have fostered advancements in the field of laser technology and have led to the development of groundbreaking inventions.
Conclusion
Tatushi Igarashi is a distinguished inventor whose work in gas laser technology has made a significant impact on the industry. His innovative patents and collaborations highlight his dedication to advancing laser technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile