This inventor holds 2 USPTO granted patents. Top assignee: Canon Kabushiki Kaisha. Active years: 1989.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Yokohama, JP (1989)
- Kanagawa, JP (1989)
Company Filing History:
Years Active: 1989
Title: The Innovations of Tosiyuki Kumakura
Introduction
Tosiyuki Kumakura is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of photographic technology, holding two patents that showcase his innovative spirit. His work primarily focuses on enhancing the functionality and efficiency of flash photographic apparatuses.
Latest Patents
Kumakura's latest patents include a flash photographic apparatus and a light integrating circuit for use in light measuring devices. The flash photographic apparatus features a unique design where a flash device is arranged to slow the rise of its flashing characteristic at the initial stage of flashing. This is achieved by impressing the electric charge of a first capacitor via an inductance onto a flash tube initially. Subsequently, the electric charge of a second capacitor is directly impressed on the flash tube without passing through the inductance. The light integrating circuit includes a light sensing device that produces a signal representative of the light sensed. It also features a compressing circuit, a capacitor, a charging circuit, a detecting circuit, a switch, and a delay circuit, all working together to enhance the accuracy of light measurement.
Career Highlights
Kumakura is currently employed at Canon Kabushiki Kaisha, a leading company in imaging and optical products. His role at Canon has allowed him to develop and refine his inventions, contributing to the company's reputation for innovation in the photographic industry.
Collaborations
Throughout his career, Kumakura has collaborated with talented individuals such as Hiroyuki Kataoka and Kouichi Ohmori. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies in photography.
Conclusion
Tosiyuki Kumakura's contributions to the field of photography through his patents and work at Canon highlight his innovative approach to technology. His inventions continue to influence the way we capture and measure light in photography today.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile