Pittsburgh, PA, United States of America

Frank Calandra, Jr

This inventor holds 35 USPTO granted patents, primarily in Mine Roof Support. Top assignee: Jennmar Corporation. Active years: 1983-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Frank Calandra, Jr. Retrieved from https://idiyas.com/inventor/frank-calandra-jr

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


% Patents Active = 94.3

Average Co-Inventor Count = 2.1

ph-index = 14

Forward Citations = 513(Granted Patents)


Location History:

  • Johnstown, PA (US) (1983 - 1985)
  • Pittsburgh, PA (US) (1987 - 2007)

Company Filing History:


Years Active: 1983-2007

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Areas of Expertise:
Cable Bolt
Expansion Assembly
Bearing Plate
Mine Roof
Truss Member
Reinforcing Rod
Roof Anchor
Resin Bonding
Mechanical Anchoring
Underground Rock
Longwall Mining
Flange Nut
35 patents (USPTO):Explore Patents

Title: Frank Calandra, Jr. - Innovator in Mine Support Systems

Introduction

Frank Calandra, Jr. is an esteemed inventor based in Pittsburgh, PA, known for his contributions to mine support technology. With a remarkable portfolio comprising 35 patents, Calandra's innovations have significantly advanced safety and efficiency within mining operations.

Latest Patents

Among his latest inventions are two notable patents: the "Square Embossed Roof and Rib Plate" and the "Flange Nut for Mine Roof Bolt." The Square Embossed Roof and Rib Plate involves a sophisticated mine roof and rib support system with unique design elements. It features a square bearing plate with a central through hole, a rib member area, and various rib configurations for enhanced structural integrity. Additionally, this invention incorporates a safety edge that may take on several forms, ensuring durability and safety in the harsh mining environment.

The Flange Nut for Mine Roof Bolt patent outlines a method and apparatus for creating a specialized nut designed for mine support bolts. It comprises a distinct orifice with a series of threads and a malformed thread that interrupts continuity, providing a secure fit and enhanced functionality in mining applications.

Career Highlights

Frank Calandra, Jr. has had a notable career, contributing his expertise to major companies, including Jennmar Corporation and Jenmar Corporation. His work has not only garnered numerous patents but has also played a crucial role in developing innovative solutions within the mining sector.

Collaborations

Throughout his career, Calandra has collaborated with distinguished professionals, including John C. Stankus and John G. Oldsen. These partnerships have enriched his work, bringing together diverse insights and expertise that have propelled the development of groundbreaking mining technologies.

Conclusion

Frank Calandra, Jr.'s dedication to innovation has made a lasting impact on the mining industry. With 35 patents to his name, he continues to inspire future inventors and contribute to advancements that prioritize safety and efficiency in mining operations. His work exemplifies the spirit of innovation that drives progress in technology and engineering.

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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