This inventor holds 1 USPTO granted patent. Top assignee: Sakura Color Products Corporation. Active years: 2017.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2017
Title: Ryotaro Kaba and Oil-Based Pigment Ink Innovation.
Introduction
Ryotaro Kaba is an inventor associated with Osaka, Japan, and Sakura Color Products Corporation. His patent work focuses on an oil-based pigment ink composition designed to provide clear, reliable writing performance.
Latest Patents
Kaba is associated with 1 patent: “Oil-Based Pigment Ink Composition and Oil-Based Pigment Ink Writing Tool.” The invention combines titanium dioxide pigment, mica pigment, a dispersant, an oil-soluble resin, and an organic solvent. It specifies a viscosity of no more than 50 mPa·s at a shear velocity of 76 s⁻¹.
The composition is designed to produce legible writing with sufficient covering power, resist the formation of hard cakes, and release ink steadily from a writing tool’s tip.
Career Highlights
Kaba’s listed patent reflects work on practical ink formulation and writing-tool performance. His association with Sakura Color Products Corporation connects his invention to a company known for color products and writing materials.
Collaborations
Kaba’s listed coworkers include Hidetoshi Fukuo and Masamitsu Takahashi.
Conclusion
Ryotaro Kaba’s patent addresses key challenges in oil-based pigment inks by combining coverage and legibility with resistance to hard caking and stable ink delivery.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile