Growing community of inventors

Calgary, Canada

Allan S Richardson

Average Co-Inventor Count = 1.43

ph-index = 5

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 335

Allan S RichardsonRobert L Hope (2 patents)Allan S RichardsonMonte Neil Wright (1 patent)Allan S RichardsonAllan S Richardson (5 patents)Robert L HopeRobert L Hope (2 patents)Monte Neil WrightMonte Neil Wright (9 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (2 from 832,718 patents)

2. Nabors Industries, Inc. (2 from 28 patents)

3. Canrig Drilling Technology Ltd. (1 from 72 patents)


5 patents:

1. 6082225 - Power tong wrench

2. 6024181 - Portable top drive

3. 5785132 - Backup tool and method for preventing rotation of a drill string

4. 5755296 - Portable top drive

5. 5251709 - Drilling rig

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as of
12/9/2025
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