Location History:
- Yokohama, JP (1990 - 1992)
- Kanagawa, JP (1991 - 1995)
- Fujinomiya, JP (2000)
Company Filing History:
5 out of 16,458 
3 out of 1,029 
3 out of 42 Years Active: 1990-2000
Title: Innovations of Hiroshi Hayakawa
Introduction
Hiroshi Hayakawa is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of photographic technology, holding a total of 8 patents. His work has had a lasting impact on the industry, particularly in the development of light-sensitive materials and darkroom equipment.
Latest Patents
One of Hayakawa's latest patents is for darkroom illumination equipment. This invention features a casing composed of a base assembly and a lid, which houses a substrate mounting light-emitting diodes, a milky colored plate, a filter, and a transparent plate. The light-emitting diode used emits light with a peak wavelength of 585 nm, ensuring that it does not affect photographic color paper. The filter is designed to eliminate light with wavelengths in the lower slope of the spectrum while allowing only the light at the peak and its proximity to pass through. Another significant patent is for a silver halide photographic light-sensitive material. This material is designed for plate making and boasts excellent rapid processing performance and high processing stability. It comprises a support with at least one silver halide light-sensitive emulsion layer, which contains a specific compound that enhances its properties.
Career Highlights
Throughout his career, Hayakawa has worked with prominent companies such as Fuji Photo Film Company, Limited and Sanden Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in photographic technology.
Collaborations
Hayakawa has collaborated with notable individuals in his field, including Yutaka Takahashi and Ikuo Harashima. These partnerships have fostered a creative environment that has led to the development of innovative solutions in photography.
Conclusion
Hiroshi Hayakawa's contributions to photographic technology through his patents and collaborations highlight his importance as an inventor. His work continues to influence the industry, showcasing the value of innovation in enhancing photographic processes.