Emigsville, PA, United States of America

Yorktowne Optical Company, Inc.

Calculating rank

USPTO Granted Patents = 3

Forward Citations = 23

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3 inventors (with patents filed for the assignee):

Christine F Knepp (2 out of 2 patents)

Robert Wayne Shelton (1 out of 13 patents)

Walter H Peters (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 6273375 - Paperboard mounting and display card for a drop-on instant sunglass attachment (2001-08-14),

2. 6224207 - Clip-on sunglass assembly (2001-05-01),

3. 6056400 - Protective eyewear with transparently tinted visor (2000-05-02),

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USPTO Data Jan 1 1976 - Nov 3 2026

3 Patents

#1 in Emigsville, PA

#2,690 in Pennsylvania

#73,976 in US

Emigsville, PA, United States of America

Yorktowne Optical Company, Inc.

Forward Citations = 23

3 inventors:

Christine F Knepp (2 out of 2 patents)

Robert Wayne Shelton (1 out of 13 patents)

Walter H Peters (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Yorktowne Optical Company, Inc.. Retrieved from https://idiyas.com/company/yorktowne-optical-company

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

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]