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Hamilton, Canada

Stelco Inc.

USPTO Granted Patents = 32

Forward Citations = 267

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35 inventors (with patents filed for the assignee):

John H Kelly (6 out of 7 patents)

Leonard E Guest (5 out of 5 patents)

Robert William Pugh (3 out of 3 patents)

4. Christian Albert Jager (2 out of 2 patents)

5. John S Mitchell (2 out of 2 patents)

6. Michel R Hone (2 out of 2 patents)

7. Jacques R Martel (2 out of 2 patents)

8. George R Harvey (2 out of 2 patents)

9. Nicholas Muzak (2 out of 2 patents)

10. Ian A Cameron (1 out of 1 patent)

11. Lorne E Murphy (1 out of 1 patent)

12. John G Maybrey (1 out of 1 patent)

13. David Greenhow (1 out of 2 patents)

14. Frank J Dalimonte (1 out of 1 patent)

15. Francis I Bailey (1 out of 1 patent)

32 patents: Sort by Forward Citations

1. 6802914 - Stress relieved grinding ball having hard outer shell (2004-10-12),

2. 6632303 - Stress relieved grinding ball having hard outer shell (2003-10-14),

3. 6299825 - Wire take-up mechanism (2001-10-09),

4. 6074765 - Grinding rod chemistry and method of heat treatment to enhance (2000-06-13),

5. 6003879 - Seal for steel furnace emissions (1999-12-21),

6. 5972135 - Stress relieved grinding rod having hard outer shell (1999-10-26),

7. 5968320 - Non-recovery coke oven gas combustion system (1999-10-19),

8. 5902423 - Heat treatment of grinding rod (1999-05-11),

9. 5310521 - Steel composition for suspension springs (1994-05-10),

10. 5310131 - Thin material handling system for use in downcoilers and method (1994-05-10),

11. 5249622 - Retrofitted width adjusting mechanism for continuous casting (1993-10-05),

12. 5227033 - Electrolytic etching of metals to reveal internal quality (1993-07-13),

13. 5186796 - Method and apparatus for electrolytic etching of metals (1993-02-16),

14. 5061352 - Electrolytic etching of metals to reveal internal quality (1991-10-29),

15. 5040440 - Product switching mechanism (1991-08-20),

Stelco Inc. is a leading Canadian steel company based in Hamilton, Ontario. With a rich heritage dating back over a century, Stelco produces and sells sustainable, high-quality steel products to customers in various industries, including construction, automotive, energy, and manufacturing. Our commitment to innovation and advanced technology enables us to deliver exceptional value and meet the evolving needs of our customers. Visit our website to learn more about Stelco and our range of steel solutions.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

32 Patents

#4 in Hamilton

#406 in Canada

#20,071 in the World

Hamilton, Canada

Stelco Inc.

Forward Citations = 267

35 inventors:

John H Kelly (6 out of 7 patents)

Leonard E Guest (5 out of 5 patents)

Robert William Pugh (3 out of 3 patents)

4. Christian Albert Jager (2 out of 2 patents)

5. John S Mitchell (2 out of 2 patents)

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