Hiroyuki Ishikawa

Title: Hiroyuki Ishikawa: Innovator in Pigment Dispersion and Ink Composition

Introduction

Hiroyuki Ishikawa is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of ink compositions and pigment dispersions. With a total of 3 patents to his name, Ishikawa's work has had a considerable impact on the printing industry.

Latest Patents

Ishikawa's latest patents include innovative formulations for pigment dispersion and offset printing ink compositions. One of his patents discloses a pigment dispersion that comprises a pigment dispersant, a nonaqueous solvent, and optionally a binder resin. This dispersion includes at least 0.2 parts by weight of a modified novolak resin relative to 100 parts weight of the pigment. The modified novolak resin features an aromatic ring and a ring structure formed by the ring opening of an epoxy group by a carboxyl group of a hydroxycarboxylic acid or its derivative. Another patent focuses on ink compositions for ink-jet recording, designed to prevent clogging of nozzles. This composition includes a pigment and a compound containing 5 to 90 moles of ethylene oxide per 1 mole of polyglycerin, which has a polymerization degree of 2 to 10 in an aqueous medium.

Career Highlights

Hiroyuki Ishikawa is currently associated with Sakata Inx Corporation, where he continues to develop innovative solutions in the field of printing inks. His expertise in pigment dispersion and ink formulations has positioned him as a key player in the industry.

Collaborations

Ishikawa collaborates with Koji Iwase, contributing to advancements in their shared field of expertise. Their partnership has fostered innovation and development in ink technology.

Conclusion

Hiroyuki Ishikawa's contributions to pigment dispersion and ink compositions highlight his role as a significant inventor in the printing industry. His innovative patents and ongoing work at Sakata Inx Corporation continue to influence the field positively.