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For the Inventor, By the Inventor

Indianapolis, IN, United States of America

Contour Hardening, Inc.

Calculating rank
USPTO Granted Patents = 20

% Expired Patents = 25.0



Trademarks = 1

Forward Citations = 101

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7 inventors (with patents filed for the assignee):

goldMedal John M Storm (17 out of 21 patents)

silverMedal Max E Stewart (5 out of 7 patents)

bronzeMedal Spencer L Gibbs (5 out of 7 patents)

4.  Nathan D Pugh (4 out of 4 patents)

5.  Michael R Chaplin (4 out of 5 patents)

6.  David L Storm (1 out of 1 patent)

7.  Neil A Merrell (1 out of 1 patent)


20 patents:

1. 12036871 - System and method for secure operation of a vehicle mounted PTO-driven generator system (2024-07-16),
2. 11453293 - System and method for secure operation of a vehicle mounted PTO-driven generator system (2022-09-27),
3. 8424501 - Induction driven ignition system (2013-04-23),
4. 8181618 - Induction driven ignition system (2012-05-22),
5. 7915748 - AC electrical generation system (2011-03-29),
6. 7647907 - Induction driven ignition system (2010-01-19),
7. 7533643 - Induction driven ignition system (2009-05-19),
8. 7057303 - Vehicle mounted electrical generator system (2006-06-06),
9. 6979913 - Vehicle mounted electrical generator system (2005-12-27),
10. 6409163 - Fixturing device for holding a workpiece (2002-06-25),
11. 6362462 - Induction hardening coil for a crankshaft (2002-03-26),
12. 6160247 - Induction hardening apparatus for a crankshaft (2000-12-12),
13. 6153865 - Induction hardening apparatus for a crankshaft (2000-11-28),
14. 6111236 - Induction hardening apparatus for a crankshaft (2000-08-29),
15. 6018155 - Induction hardening apparatus for a crankshaft (2000-01-25),
Company Overview
Contour Hardening, Inc. is a specialized manufacturer based in Indianapolis, Indiana, focusing on advanced heat treatment processes. The company is known for its expertise in surface hardening technologies, which enhance the durability and performance of various metal components. By leveraging innovative techniques, Contour Hardening serves industries such as automotive, aerospace, and manufacturing, providing solutions that improve product longevity and reliability. Their commitment to quality and precision positions them as a key player in the heat treatment sector.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

20 Patents

#57 in Indianapolis, IN

#242 in Indiana

#16,416 in US

#31,315 in the World

Indianapolis, IN (US)
Indianapolis, IN, United States of America

Contour Hardening, Inc.

Forward Citations = 101

7 inventors:

goldMedal John M Storm (17 out of 21 patents)

silverMedal Max E Stewart (5 out of 7 patents)

bronzeMedal Spencer L Gibbs (5 out of 7 patents)

4.  Nathan D Pugh (4 out of 4 patents)

5.  Michael R Chaplin (4 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Contour Hardening, Inc.. Retrieved from https://idiyas.com/company/contour-hardening

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]
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