This inventor holds 36 USPTO granted patents and 11 published patent applications and 25 EPO patents, primarily in Synthetic Quartz Glass. Top assignees: Shin-Etsu Chemical Co., Ltd., Shin-Etsu Chemical C O., Ltd., Shin-Etsu Chemical Ltd.. Active years: 2012-2026.
Company Filing History:
32 out of 5,989 
2 out of 42 
2 out of 134 Years Active: 2012-2026
Areas of Expertise:
Title: Daijitsu Harada: Innovator in Optical Materials
Introduction: Daijitsu Harada is a prominent inventor based in Joetsu, Japan, known for his significant contributions to the field of optical materials. With an impressive portfolio of 33 patents, he has established himself as a key figure in the development of advanced substrates and optical elements.
Latest Patents: Harada's latest innovations include several notable patents that advance the technology of optical components. His work includes the development of a synthetic quartz glass substrate with an antireflection film. This substrate features a contact angle measured by the sessile drop method of JIS R 3257:1999, which is kept within 5 degrees. The antireflection film consists of a first layer containing AlO, a second layer with HfO, and a third layer featuring Mg, all sequentially laminated on the substrate's main surface. Additionally, he has patented a mask blank glass substrate characterized by a maximum value of a circularly averaged power spectral density of 1,000 nm or less at a specified spatial frequency.
Career Highlights: Throughout his career, Daijitsu Harada has been associated with reputable companies such as Shin-Etsu Chemical Co., Ltd. His extensive work with the company has equipped him with the skills and knowledge necessary to push the boundaries of optical material technology.
Collaborations: Harada has collaborated with esteemed colleagues, including Masaki Takeuchi and Harunobu Matsui. Their partnerships have fostered innovation and allowed for the successful development of cutting-edge optical products.
Conclusion: Daijitsu Harada continues to be a driving force in the realm of optical materials, with his innovative patents paving the way for advancements in technology. His expertise and collaborative efforts highlight the importance of collaboration in pushing the frontiers of science and invention.