For the Inventor, By the Inventor

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West Glamorgan, United Kingdom

Qual-chem Limited

USPTO Granted Patents = 2

Trademarks = 48

Forward Citations = 11

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4 inventors (with patents filed for the assignee):

Keith Harris (1 out of 1 patent)

Stephen David Bray (1 out of 1 patent)

Mahesh C Jha (1 out of 1 patent)

4. William A May (1 out of 5 patents)

2 patents: Sort by Forward Citations

1. 6638337 - Method of introducing additives in steelmaking (2003-10-28),

2. 6190625 - Fluidized-bed roasting of molybdenite concentrates (2001-02-20),

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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#1 in West Glamorgan

#6,372 in United Kingdom

West Glamorgan, United Kingdom

Qual-chem Limited

Forward Citations = 11

4 inventors:

Keith Harris (1 out of 1 patent)

Stephen David Bray (1 out of 1 patent)

Mahesh C Jha (1 out of 1 patent)

4. William A May (1 out of 5 patents)

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