Masasi Ogawa

Title: Masasi Ogawa: Photographic Materials and Gelatin-Hardening Innovations.

Introduction

Masasi Ogawa is an inventor associated with Minamiashigara, Japan, and Fuji Photo Film Company, Limited. The supplied information credits Ogawa with 8 patents concerning photographic materials and processes for hardening gelatin.

Latest Patents

One of Ogawa’s listed patents concerns photographic light-sensitive material. It describes a material with a layer containing a polymer that has a vinylsulfone group, or a functional group that can serve as its precursor. The polymer can be used as a mordant, an antistatic agent, or another photographic additive.

Another listed patent, “Method of Hardening Gelatin and Photographic Materials Produced Thereby,” describes a gelatin-hardening method combining a specified polymer, a polyvalent alcohol with at least two hydroxy groups, and a hardener with an active vinyl group. The stated benefits include faster hardening, reduced post-hardening, and less sensitivity to temperature and humidity during storage.

Career Highlights

Ogawa’s listed inventions address materials and processing needs in photographic technology. The patents describe polymer-based additives for photographic layers and a method intended to improve the hardening and storage properties of gelatin compositions.

Collaborations

The supplied information associates Ogawa with Fuji Photo Film Company, Limited, and identifies Kunio Ishigaki and Hidefumi Sera as coworkers. It does not specify their roles in the listed patents.

Conclusion

Masasi Ogawa’s listed patent work focuses on photographic light-sensitive materials and gelatin hardening, reflecting technical contributions to photographic materials and their processing.