Seoul, South Korea

Tac-hoe Koo

This inventor holds 1 USPTO granted patent. Top assignee: Samsung Electronics Co., Ltd.. Active years: 2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tac-hoe Koo. Retrieved from https://idiyas.com/inventor/tac-hoe-koo

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 1

Forward Citations = 2(Granted Patents)


Company Filing History:


Years Active: 2012

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1 patent (USPTO):Explore Patents

Title: Tac-hoe Koo and His Electrophotographic Toner Patent.

Introduction

Tac-hoe Koo is an inventor based in Seoul, South Korea. His patent work includes an invention concerning electrophotographic toner and its preparation.

Latest Patents

Koo is associated with 1 patent: “Electrophotographic Toner and Method of Preparing the Same.” The invention describes a toner containing latex, a coloring agent, wax, and 3 to 1,000 parts per million each of silicon (Si) and iron (Fe). It specifies a Si-to-Fe mole ratio ranging from 0.1 to 5.

Career Highlights

Koo’s listed patent is associated with Samsung Electronics Co., Ltd. It focuses on toner composition and preparation for electrophotographic applications.

Collaborations

Koo’s listed coworkers include Yoda Shin and Kyung-yol Yon.

Conclusion

Tac-hoe Koo’s patent highlights his contribution to electrophotographic toner technology through a formulation that specifies silicon and iron content and their mole ratio.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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