Sinking Spring, PA, United States of America

John F McGraw

This inventor holds 1 USPTO granted patent. Top assignee: Carpenter Technology Corporation. Active years: 1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: John F McGraw. Retrieved from https://idiyas.com/inventor/john-f-mcgraw-vw2k85m8

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 6.0

ph-index = 1

Forward Citations = 7(Granted Patents)


Company Filing History:


Years Active: 1989

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1 patent (USPTO):Explore Patents

Title: The Innovations of John F. McGraw

Introduction

John F. McGraw is a notable inventor based in Sinking Spring, PA (US). He has made significant contributions to the field of metallurgy, particularly in the development of hot work tool steel. His innovative work has led to advancements that benefit various industrial applications.

Latest Patents

John F. McGraw holds a patent for "Hot work tool steel with good temper resistance." This improved hot work tool steel exhibits higher hardness capability and better temper resistance above 1100 F. It also offers superior wear resistance compared to AISI type H13, along with enhanced toughness and ductility compared to AISI type H10 or type H21. This steel alloy contains specific weight percentages of various elements, making it a valuable material in manufacturing.

Career Highlights

Throughout his career, John has been associated with Carpenter Technology Corporation, a leading company in the production of specialty alloys. His work has not only contributed to the company's reputation but has also advanced the industry standards for tool steels.

Collaborations

John has collaborated with several talented individuals, including Harrison A. Garner, Jr. and Raymond M. Hemphill. These collaborations have fostered a creative environment that has led to innovative solutions in metallurgy.

Conclusion

John F. McGraw's contributions to the field of metallurgy through his patent and work at Carpenter Technology Corporation highlight his role as a significant inventor. His advancements in hot work tool steel continue to influence the industry positively.

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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