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For the Inventor, By the Inventor

Ellicott City, MD, United States of America

Roger Yiming Leung

This inventor holds 7 USPTO granted patents. Top assignees: Betzdearborn, Inc., W. R. Grace Co.-Conn.. Active years: 1995-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Roger Yiming Leung. Retrieved from https://idiyas.com/inventor/roger-yiming-leung

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

USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 2.9

ph-index = 4

Forward Citations = 52(Granted Patents)


Company Filing History:

goldMedal4 out of 217 
 
Betzdearborn, Inc.
 patents
silverMedal3 out of 1,391 
 
W. R. Grace Co.-Conn.
 patents

Years Active: 1995-2001

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7 patents (USPTO):Explore Patents
1. 6273998 - Production of paper and paperboard (2001-08-14),
2. 5720888 - Water-soluble cationic copolymers and their use as flocculants (1998-02-24),
3. 5700893 - Water-soluble cationic copolymers and their use as flocculants and (1997-12-23),
4. 5681912 - Water-soluble cationic copolymers and their use as flocculants and (1997-10-28),
5. 5529699 - Water-soluble cationic copolymers and their use as flocculants (1996-06-25),
6. 5516852 - Method of producing water-soluble cationic copolymers (1996-05-14),
7. 5473033 - Water-soluble cationic copolymers and their use as drainage retention (1995-12-05),

Title: The Innovative Contributions of Roger Yiming Leung

Introduction

Roger Yiming Leung is a notable inventor based in Ellicott City, MD (US). He has made significant contributions to the field of materials science, particularly in the production of paper and paperboard. With a total of 7 patents to his name, Leung's work has had a considerable impact on various industrial applications.

Latest Patents

One of Leung's latest patents focuses on the production of paper and paperboard using water-soluble cationic copolymers. This innovative method involves flocculating coagulated and/or finely divided suspended matter in aqueous systems. The process includes adding from 0.005 to 1 weight percent of at least one water-soluble cationic polymer, which is derived from the polymerization reaction of an N-vinylamide with a cationic quaternary amine monomer. This advancement has the potential to enhance the efficiency of paper production processes.

Career Highlights

Throughout his career, Roger Yiming Leung has worked with prominent companies such as Betzdearborn, Inc. and W. R. Grace Co.-Conn. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in the industry.

Collaborations

Leung has collaborated with several notable professionals in his field, including Lawrence L. Kuo and Kenneth S. Williams. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and the development of new technologies.

Conclusion

Roger Yiming Leung's contributions to the field of materials science, particularly in the production of paper and paperboard, highlight his innovative spirit and dedication to advancing technology. His patents and collaborations reflect a commitment to improving industrial processes and enhancing product quality.

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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