Location History:
- Tokyo, JP (2013 - 2014)
- New Delhi, IN (2014 - 2016)
Company Filing History:
8 out of 99 
1 out of 3 Years Active: 2013-2016
Title: Tomomi Usui: Innovator in Silica Container Technology
Introduction
Tomomi Usui is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of silica container technology, holding a total of nine patents. His innovative work focuses on the development of advanced silica containers that exhibit unique properties and production methods.
Latest Patents
One of Usui's latest patents is for a silica container that features a substrate with rotational symmetry, primarily composed of silica and containing gaseous bubbles in its peripheral part. This container includes a transparent silica glass in the inner peripheral part and an inner layer formed on the inner surface of the substrate. The substrate is designed to contain lithium (Li), sodium (Na), and potassium (K) at a total concentration of 50 or fewer parts per million by weight. The inner layer also contains these elements at a total concentration of 100 or fewer parts per billion by weight, along with calcium (Ca), strontium (Sr), or barium (Ba) at a concentration of 50 to 2000 parts per million by weight. The linear light transmittance of both the substrate and the inner layer is between 91.8% and 93.2% at a light wavelength of 600 nm.
Another notable patent involves a method for producing a silica container with rotational symmetry. This method includes forming a preliminarily molded article by feeding a powdered substrate's raw material to the inner wall of an outer frame while rotating the frame. The process controls humidity inside the outer frame and utilizes a discharge-heat melting method with carbon electrodes to create a sintered body on the outer peripheral part and a fused glass body on the inner peripheral part.
Career Highlights
Throughout his career, Tomomi Usui has worked with notable companies, including Shin-Etsu Quartz Products Co., Ltd. and Shin-Etsu Quartz Products Co., Ltd. His expertise in silica technology has positioned him as a key figure in the industry.
Collaborations
Usui has collaborated with various professionals in his field, including Shigeru Yamagata, who has contributed to his innovative projects.
Conclusion
Tomomi Usui's work in silica container technology showcases his inventive spirit and dedication to advancing materials science. His patents reflect a commitment to innovation and excellence in the field.
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.