Company Filing History:
Years Active: 1983-1989
Title: Hiroaki Shiozawa: Innovator in Photographic Technology
Introduction
Hiroaki Shiozawa, a notable inventor hailing from Hino, Japan, has significantly contributed to the field of photographic materials. With a remarkable portfolio of three patents, his innovations are recognized for advancing the technology of light-sensitive photographic emulsion.
Latest Patents
Among his latest contributions is a patent for a light-sensitive silver halide photographic material. This invention describes a light-sensitive photographic material that incorporates at least one silver halide emulsion layer supported by a medium. It notably consists of light-sensitive silver halide grains, metal salt grains exhibiting internal fog, and a polyhydric alcohol with multiple hydroxyl groups that has a melting point of 40°C or higher.
Another significant patent is a method for preparing silver halide photographic emulsion. This method utilizes an ammoniacal silver nitrate solution prepared in a double-jet manner, ensuring that the solubility ratio of silver halide in the emulsion remains at 3 or less after a specified quantity of the solution has been utilized. This technique results in a highly sensitive monodispersed silver halide photographic emulsion featuring relatively larger crystal sizes.
Career Highlights
Hiroaki Shiozawa is affiliated with Konishiroku Photo Industry Co., Ltd., where he engages in pioneering research and development in photographic technology. His inventions aim to enhance the quality and sensitivity of photographic materials, which has had a lasting impact on the industry.
Collaborations
Shiozawa's work has also involved collaborations with colleagues like Akio Suzuki and Takeo Koitabashi. These partnerships have fostered an environment of innovation, propelling advancements in photographic methodologies and materials.
Conclusion
Hiroaki Shiozawa stands as a prominent figure in the realm of photographic innovation. His patents not only reflect his expertise but also denote significant advancements in the quality of photographic materials, reinforcing his legacy as a key contributor to the industry.