Canton, GA, United States of America

Larry Cullen Underwood

This inventor holds 71 USPTO granted patents and 15 published patent applications, primarily in Firearm Technology. Top assignees: Mean L.l.c., L.l. Culmat, L.p., Other. Active years: 2005-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Larry Cullen Underwood. Retrieved from https://idiyas.com/inventor/larry-cullen-underwood

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

USPTO Granted Patents = 71 

% Patents Active = 88.7

Average Co-Inventor Count = 2.0

ph-index = 7

Forward Citations = 199(Granted Patents)

Forward Citations (Not Self Cited) = 76(Dec 10, 2025)


Location History:

  • Woodstock, GA (US) (2016)
  • Canton, GA (US) (2005 - 2024)

Company Filing History:

goldMedal3 out of 3 
 
Mean L.l.c.
 patents
silverMedal2 out of 11 
 
L.l. Culmat, L.p.
 patents
bronzeMedal29 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 2005-2026

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Areas of Expertise:
Firearm Systems
Polymer Receiver
Delayed Operating Systems
Ammunition Design
Monolithic Assembly
Magazine Assembly
Trigger Mechanisms
Ambidextrous Receiver
Ejector Design
Handguard Assembly
Folding Stock
Malfunction Simulation
71 patents (USPTO):Explore Patents

Title: Innovations by Larry Cullen Underwood

Introduction

Larry Cullen Underwood, hailing from Canton, GA, is an accomplished inventor known for his significant contributions to firearm technology. With an impressive portfolio of 51 patents, Underwood has made strides in the innovation landscape, particularly in the realm of hybrid molded firearm assemblies and operating systems.

Latest Patents

Among his latest patents, Underwood has developed a **Hybrid Molded Firearm Assembly**. This innovative assembly features a trigger, hammer, and disconnector, each composed of a skeleton and a molded portion that encases it, enhancing both functionality and user experience. Another notable invention is the **Roller Delayed Firearm Operating System**, which introduces a sophisticated mechanism involving a forward bolt and carrier, along with a short cam pin that optimizes the firearm’s operation. This precise engineering improves both reliability and performance.

Career Highlights

During his career, Underwood has made impactful advancements in firearm technology. His work is characterized by an emphasis on combining material science with practical design, ensuring that his inventions not only push the boundaries of innovation but also provide tangible benefits to users.

Collaborations

Underwood's journey is complemented by collaborations with key individuals in the field, including coworkers James Matthew Underwood and Andrew Price Biskup. These partnerships have played a vital role in refining his innovations and advancing the capabilities of firearm technology.

Conclusion

Larry Cullen Underwood stands as a prominent figure in the world of firearms innovation. His extensive list of patents and groundbreaking inventions reflect a deep commitment to advancing technology in this important sector. With each new development, Underwood continues to inspire future inventors and contribute to the evolution of modern firearms.

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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