This inventor holds 3 USPTO granted patents. Top assignee: Oki Electric Industry Co., Ltd.. Active years: 1993-2003.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1993-2003
Title: **Hiroshi Tohyama: Innovator in LED and Optical Technology**
Introduction
Hiroshi Tohyama is a prominent inventor based in Tokyo, Japan. With a strong focus on innovations in LED technology and optical systems, he holds three patents that contribute significantly to the fields of electronics and printing.
Latest Patents
Tohyama's most notable patents include an innovative LED array chip and a double-resolution optical system for electrophotographic printers.
The **LED array chip** patent describes a semiconductor substrate featuring a unique design where the front surface and side surface converge at an acute angle. This design enhances the efficiency of light-emitting elements. The manufacturing method involves forming grooves between LED arrays to create separate chips while maintaining the integrative structure of the array.
Another groundbreaking invention is the **double-resolution optical system for electrophotographic printers**. This technology employs a birefringent plate that manipulates light polarization, allowing for enhanced illumination of photosensitive media. By utilizing a polarization switching device, the system can illuminate two dots per light-emitting element, effectively doubling the resolution and improving print quality.
Career Highlights
Hiroshi Tohyama is an active member of Oki Electric Industry Co., Ltd., where he leverages his expertise to drive technological advancements. His contributions have positioned the company as a significant player in the electronics industry, particularly in printing solutions.
Collaborations
Throughout his career, Tohyama has collaborated with talented individuals such as Hiroshi Furuya and Susumu Ozawa. These collaborations have fostered an environment of innovation and creativity, leading to the development of cutting-edge technologies and solutions.
Conclusion
Hiroshi Tohyama stands out as a visionary inventor with a commitment to enhancing technology through his patents in LED arrays and optical systems. His work not only reflects his dedication to innovation but also significantly contributes to the advancement of the electronics and printing industries.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile