This inventor holds 1 USPTO granted patent. Top assignee: Tokyo Ohka Kogyo Co., Ltd.. Active years: 1991.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1991
Title: Yasuyuki Takeda: Innovator in Positive-Working Resist Composition
Introduction
Yasuyuki Takeda is a notable inventor based in Atsugi, Japan. He has made significant contributions to the field of resist compositions, particularly in the development of solutions that enhance the performance of positive-working resist materials. His innovative work has led to the filing of a patent that showcases his expertise and creativity.
Latest Patents
Yasuyuki Takeda holds a patent for a developer solution for positive-working resist composition. This developer solution is designed to effectively develop a positive-working resist composition that includes an alkali-soluble novolac resin and a naphthoquinone diazide compound. The invention is capable of producing a patterned image of the resist layer with high contrast while increasing the effective depth of focus. The key ingredient in this developer solution is an alkali-soluble organic cyclic nitrogen compound, such as N-hydroxyethyl piperazine, N-methyl-4-piperidone, or 1,3-dimethyl-2-imidazolidinone, which is added in a specified concentration to a conventional developer solution containing tetramethyl ammonium hydroxide or choline.
Career Highlights
Yasuyuki Takeda is associated with Tokyo Ohka Kogyo Co., Ltd., a company known for its advancements in the field of chemical products for the semiconductor industry. His work at the company has been instrumental in developing innovative solutions that meet the evolving needs of technology.
Collaborations
Throughout his career, Yasuyuki has collaborated with talented individuals such as Hatsuyuki Tanaka and Toshimasa Nakayama. These collaborations have contributed to the successful development of his patented solutions and have fostered a creative environment for innovation.
Conclusion
Yasuyuki Takeda's contributions to the field of resist compositions highlight his role as an innovator in the industry. His patented developer solution demonstrates his commitment to enhancing the performance of resist materials, making a significant impact on technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile