Spruce Pine, NC, United States of America

Donald H Duncan

This inventor holds 3 USPTO granted patents. Top assignees: J.m. Huber Corporation, Duncan Technologies, Inc.. Active years: 1991-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Donald H Duncan. Retrieved from https://idiyas.com/inventor/donald-h-duncan

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


% Patents Active = 100.0

Average Co-Inventor Count = 1.0

ph-index = 2

Forward Citations = 6(Granted Patents)


Company Filing History:


Years Active: 1991-1998

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3 patents (USPTO):Explore Patents

Title: Innovations by Donald H. Duncan

Introduction

Donald H. Duncan is an accomplished inventor based in Spruce Pine, NC (US). He has made significant contributions to the field of mica processing, holding a total of 3 patents. His innovative approaches have led to advancements in the production of high-quality mica products.

Latest Patents

Duncan's latest patents include "Methods and apparatus for delaminating sedimentary mica" and "Mica deliminator." The first patent describes a method for producing a superior grade of flake mica by applying shear forces to sedimentary mica. This process involves rotating a plurality of arcuate blades within a confined cylindrical chamber, allowing the mica to be delaminated into flakes. The second patent outlines a mica plate delaminator that features a delaminating cylindrical chamber with a flat disk mounted at a 65-degree angle to the drive shaft. This design enables the mica to be forced back and forth, effectively delaminating the mica plates into small flakes.

Career Highlights

Throughout his career, Donald H. Duncan has worked with notable companies, including J.M. Huber Corporation and Duncan Technologies, Inc. His experience in these organizations has contributed to his expertise in mica processing and innovation.

Collaborations

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Conclusion

Donald H. Duncan's contributions to mica processing through his innovative patents demonstrate his commitment to advancing the industry. His work continues to influence the production of high-quality mica products.

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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