Location History:
- Sagamihara, JP (2003 - 2006)
- Machida, JP (2011)
Company Filing History:
Years Active: 2003-2011
Title: Hiroyuki Minamikawa: Innovator in Glass-Ceramics
Introduction
Hiroyuki Minamikawa is a prominent inventor based in Sagamihara, Japan. He has made significant contributions to the field of glass-ceramics, holding a total of 4 patents. His innovative work focuses on the development of materials with unique thermal and optical properties.
Latest Patents
Minamikawa's latest patents include advancements in glass-ceramics and methods for their manufacturing. One notable patent describes glass-ceramics that consist of 50-60% SiO, 22-26% AlO, and 3-5% LiO, featuring an average crystal grain diameter exceeding 100 nm. These materials exhibit a linear thermal expansion coefficient of 30×10/°C or below within a temperature range of 0°C to 50°C. The manufacturing process involves multiple steps, including melting glass raw materials, forming the molten glass, and subjecting it to specific heat treatments.
Another significant patent focuses on low expansion transparent glass-ceramics. These materials are produced by heat treating a base glass at a relatively low melting temperature of 1530°C or below. The resulting glass-ceramics have an average linear thermal expansion coefficient ranging from +6×10/°C to +35×10/°C, with an 80% transmittance wavelength of 700 nm or below. They also demonstrate excellent internal transmittance and heat resistance, making them suitable for optical applications.
Career Highlights
Hiroyuki Minamikawa is associated with Kabushiki Kaisha Ohara, where he continues to push the boundaries of glass-ceramic technology. His work has garnered attention for its practical applications in various industries, particularly in optics and materials science.
Collaborations
Minamikawa has collaborated with notable colleagues, including Kazuo Ohara and Naoyuki Goto. Their combined expertise has contributed to the advancement of innovative glass-ceramic solutions.
Conclusion
Hiroyuki Minamikawa's contributions to the field of glass-ceramics exemplify the spirit of innovation. His patents reflect a commitment to developing materials with enhanced properties, paving the way for future advancements in technology.