This inventor holds 6 USPTO granted patents. Top assignee: Dainippon Ink and Chemicals, Incorporated. Active years: 1994-1998.
Company Filing History:
Years Active: 1994-1998
Title: Kiyoshi Suematsu: Innovator in Photographic Processes
Introduction
Kiyoshi Suematsu is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of photographic processes, particularly in the development of high-contrast images. With a total of 6 patents to his name, Suematsu's work has advanced the technology used in photographic materials.
Latest Patents
One of Suematsu's latest patents involves a process for forming super high-contrast negative images using silver halide. This innovative image-forming process develops previously image-exposed silver halide photographic material with an alkaline developer. The developer contains a reductone compound as the main developing agent, along with a 1,2,5-thiadiazole compound and/or a 2,1,3-benzothiadiazole compound. The combination of these compounds allows for the creation of super high-contrast images with a gamma higher than 15, while minimizing issues such as pepper and fog.
Career Highlights
Kiyoshi Suematsu is currently associated with Dainippon Ink and Chemicals, Incorporated. His work at this company has been instrumental in pushing the boundaries of photographic technology. Suematsu's innovative approaches have garnered attention in the industry, showcasing his expertise and dedication to advancing photographic processes.
Collaborations
Throughout his career, Suematsu has collaborated with notable colleagues, including Naoki Obi and Yasuhiko Kojima. These partnerships have contributed to the development of groundbreaking technologies in the field of photography.
Conclusion
Kiyoshi Suematsu's contributions to photographic processes have established him as a key figure in the industry. His innovative patents and collaborations reflect his commitment to advancing technology in photography.