This inventor holds 1 USPTO granted patent. Top assignee: Fuji Photo Film Company, Limited. Active years: 1985.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1985
Title: Shungi Ogawa and His Patent for Pigment Dispersion
Introduction
Shungi Ogawa is an inventor associated with Tokyo, Japan, and Fuji Photo Film Company, Limited. His listed patent concerns a process for preparing an aqueous dispersion of pigment, with particular relevance to carbon black and photographic materials.
Latest Patents
Ogawa’s listed patent, “Process for Preparing Aqueous Dispersion of Pigment,” describes dispersing a surface-active agent in water before adding the pigment. The agent is soluble in an organic solvent but has a water solubility of 0.1% or less at about 25°C. According to the patent description, this method helps reduce foaming, aggregation, and sedimentation during storage. It is especially suited to carbon black dispersions used in photographic materials, where the agent is intended to avoid unwanted secondary effects.
The available information lists 1 patent for Ogawa.
Career Highlights
Ogawa’s listed work connects his inventive activity with Fuji Photo Film Company, Limited. The patent addresses a practical materials-processing challenge: maintaining a stable pigment dispersion while limiting effects that could interfere with photographic applications.
Collaborations
The provided information names Osamu Takahashi and Nobuo Yamamura as Ogawa’s coworkers. Their specific roles in the patent or related work are not stated.
Conclusion
Shungi Ogawa’s listed invention presents a method for preparing more stable aqueous pigment dispersions, with an emphasis on carbon black and photographic materials.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile