Moline, IL, United States of America

Karl R Lewis

This inventor holds 10 USPTO granted patents, plus 3 CIPO patents. Top assignees: Krl Holding Company, Inc., Other. Active years: 2001-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Karl R Lewis. Retrieved from https://idiyas.com/inventor/karl-r-lewis

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


% Patents Active = 80.0


Average Co-Inventor Count = 1.9

ph-index = 8

Forward Citations = 260(Granted Patents)


Location History:

  • Moline, IL (US) (2001 - 2018)
  • Davenport, IA (US) (2019)

Company Filing History:


Years Active: 2001-2019

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10 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Karl R. Lewis

Introduction

Karl R. Lewis, based in Moline, IL, is a prolific inventor with a remarkable portfolio of ten patents. His innovations primarily focus on enhancing firearm technology, demonstrating his commitment to improving safety and functionality in this field.

Latest Patents

Among Lewis's latest innovations is his patent for a "Receiver with an ambidextrous bolt stop." This invention features a lower receiver that incorporates an aperture connecting a bolt stop well and an actuator well. The design includes a bolt stop and a first actuator lever on one side, complemented by a second bolt release lever on the opposite side. The mechanism allows for seamless operation, enabling both levers to move in unison for improved usability.

Another noteworthy invention is his "Contoured cam pin for a rotating bolt." This patent addresses the performance of cam pins in rotating bolt firearms, introducing cam pins with a curved profile that enhances their interaction with the cam slot in the bolt carrier. This innovation contributes significantly to the reliability and efficiency of firearms.

Career Highlights

Karl has worked with KRL Holding Company, Inc., where he has further refined his expertise in firearm design and innovation. His passion for advancing technology in this specialized sector has led to the creation of essential components that elevate user experience and maintain high safety standards.

Collaborations

Throughout his career, Lewis has collaborated with talented individuals, including notable colleagues James Arend Seabold Bargren and Neal David Hohl. These partnerships have fostered a dynamic exchange of ideas, culminating in innovative solutions in the firearms industry.

Conclusion

Karl R. Lewis stands out as an inventor whose contributions to firearm technology have been both innovative and impactful. With a clear focus on enhancing functionality and safety, his patents reflect a deep understanding of the needs within the industry. As he continues to innovate, his work will undoubtedly influence future developments in firearm technology.

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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