Hidetoshi Fukuo

Title: Hidetoshi Fukuo: Innovator in Ink and Crayon Technology

Introduction

Hidetoshi Fukuo is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of ink and crayon technology, holding a total of 18 patents. His innovative work focuses on improving the quality and usability of writing instruments.

Latest Patents

Fukuo's latest patents include an oil-based pigment ink composition and an oil-based pigment ink writing tool. The ink composition features titanium dioxide pigment, mica pigment, dispersant, oil-soluble resin, and organic solvent. This formulation ensures a viscosity of 50 mPa-s or lower at a shear velocity of 76 (l/s). The resulting ink provides excellent coverage and legibility, avoids hard cake formation, and allows for stable ink release from the writing tool's tip. Additionally, he has developed a crayon that utilizes alternative plasticizers instead of conventional phthalate ester plasticizers. This crayon includes a colorant, gelling agent, organic solvent, resin component, and a plasticizer selected from diisononyl adipate, acetyltributyl citrate, 1,2-cyclohexanedicarboxylic acid diisononyl, and alkylsulfonic acid phenyl ester, contained in an amount of 1 to 20% by weight.

Career Highlights

Fukuo is currently associated with Sakura Color Products Corporation, a company known for its high-quality art supplies and writing instruments. His work has significantly advanced the company's product offerings and has contributed to its reputation in the industry.

Collaborations

Throughout his career, Fukuo has collaborated with notable colleagues, including Masamitsu Takahashi and Kotaro Sumitomo. These partnerships have fostered innovation and creativity in their respective fields.

Conclusion

Hidetoshi Fukuo's contributions to ink and crayon technology exemplify his commitment to innovation and quality. His patents reflect a deep understanding of materials and their applications, making him a valuable figure in the industry.