For the Inventor, By the Inventor

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Queensland, Australia

Qr Limited

USPTO Granted Patents = 2

Forward Citations = 11

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5 inventors (with patents filed for the assignee):

Peter Wolfs (1 out of 5 patents)

Darryl Wesche (1 out of 1 patent)

Timothy John Watkins (1 out of 1 patent)

4. Leonard George Chardborn Hamey (1 out of 1 patent)

5. Fujie Xia (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 9061594 - Pantograph damage and wear monitoring system (2015-06-23),

2. 7853412 - Estimation of wheel rail interaction forces (2010-12-14),

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USPTO Data Jan 1 1976 - Jan 6 2026

2 Patents

#66 in Queensland

#2,050 in Australia

Queensland, Australia

Qr Limited

Forward Citations = 11

5 inventors:

Peter Wolfs (1 out of 5 patents)

Darryl Wesche (1 out of 1 patent)

Timothy John Watkins (1 out of 1 patent)

4. Leonard George Chardborn Hamey (1 out of 1 patent)

5. Fujie Xia (1 out of 1 patent)

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