Company Filing History:
Years Active: 1999-2004
Title: Innovations by Hidekazu Uehara
Introduction
Hidekazu Uehara is a notable inventor based in Annaka, Japan. He has made significant contributions to the field of silica production, holding 2 patents that showcase his innovative approaches. His work primarily focuses on methods for producing and purifying fine particulate silica.
Latest Patents
Uehara's latest patents include a method for producing hydrophobic silica fine powder. This method involves pyrolyzing a silane compound to create silica fine powder, which is then hydrophobized using an organohalosilane in a fluidization vessel. A portion of the silica fine powder is bypassed to a waste gas line, where it is collected with a cyclone and bag filter. This process reduces the amount of unreacted organohalosilane in the waste gases, alleviating the burden on waste gas treatment. Additionally, the silica with unreacted organohalosilane is fed back into the fluidization vessel, enhancing the reaction efficiency.
Another significant patent by Uehara is a method for purifying fine particulate silica. In this process, crude fumed silica resulting from pyrogenic hydrolysis is purified by continuously feeding particulate silica and steam or a mixture of steam and air through an upright column. This method effectively removes halides from the particulate silica, allowing for the collection of pure fine particulate silica at a low energy cost.
Career Highlights
Uehara is currently associated with Shin-Etsu Chemical Co., Ltd., a leading company in the chemical industry. His work has contributed to advancements in silica production techniques, making them more efficient and environmentally friendly.
Collaborations
Throughout his career, Uehara has collaborated with notable colleagues, including Kiyoshi Shirasuna and Susumu Ueno. These collaborations have further enhanced the innovative processes developed in his patents.
Conclusion
Hidekazu Uehara's contributions to the field of silica production through his innovative patents demonstrate his expertise and commitment to advancing technology. His work not only improves production efficiency but also addresses environmental concerns in the industry.