Location History:
- Ashiya, JP (1995)
- Kobe, JP (2002)
- Hyogo, JP (1998 - 2013)
Company Filing History:
3 out of 22 
2 out of 30 
2 out of 1,714 
Years Active: 1995-2013
Title: **Hidekazu Hashima: Innovator in Optical Glass Technology**
Introduction
Hidekazu Hashima, an accomplished inventor based in Hyogo, Japan, has made significant contributions to the field of optical glass manufacturing. With a total of six patents to his name, he has pioneered advancements that enhance the performance and application of optical materials in various industries.
Latest Patents
Among his latest innovations, Hashima has developed several types of optical glass that are noteworthy for their unique compositions and properties. One of his patents describes a type of optical glass that includes 25-50 wt. % PO, 15-35 wt. % BaO, 1-25 wt. % ZnO, and 3-10 wt. % NbO. This formulation results in a high refractive index of 1.6 or more, low dispersion with an Abbe number of 42 or more, and improved resistance to devitrification during molding processes. This glass is particularly suitable for precision-mold press molding and transferring fine structures.
Another significant patent focuses on an optical glass with a slightly different composition, comprising 1.0-4.5 wt. % SiO, 30.5-50.0 wt. % BO, 1.1-8.0 wt. % LiO, 10.1-19.5 wt. % BaO, 15.5-30.0 wt. % ZnO, 3.0-15.0 wt. % YO, and 10.0-19.5 wt. % LaO. This variant also boasts a high refractive index of 1.6 or more and a low deformation point, which enhances its suitability for precision engineering applications in optical devices.
Career Highlights
Hashima has a noteworthy background in the industry, having worked with prestigious companies such as Yamamura Glass Co., Ltd. and Nihon Yamamura Glass Co., Ltd. His expertise in optical glass technology has led to groundbreaking enhancements in material properties that have wide-ranging applications.
Collaborations
Throughout his career, Hashima has collaborated with notable individuals in the field, including colleagues Akio Konishi and Hideki Kawai. These collaborations have undoubtedly enriched his research and development initiatives, fostering an environment of innovation that has propelled advancements in optical materials.
Conclusion
Hidekazu Hashima stands as a prominent figure in the realm of optical glass innovation. His patents not only reflect his ingenuity but also contribute to the ongoing evolution of materials that are critical in various technological applications. As he continues to push the boundaries of what is possible in optical glass technology, the industry watches with keen interest for his future contributions.