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Sutton Coldfield, United Kingdom

Colin A Bird

Average Co-Inventor Count = 2.00

ph-index = 2

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 = 41

Colin A Bird ↔ Colin F Turner (1 patent)Colin A Bird ↔ Keith J Pugh (1 patent)Colin A Bird ↔ Turner, Colin F S (1 patent)Colin A BirdColin A Bird (3 patents)Colin F TurnerColin F Turner (3 patents)Keith J PughKeith J Pugh (1 patent)Turner, Colin F STurner, Colin F S (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hardy Spicer Limited (3 from 5 patents)


3 patents:

1. 5230659 - Constant velocity ratio universal joint having improved centering of

2. 5224899 - Constant velocity universal joint inner member with three arms each arm

3. 5203741 - Constant velocity ratio universal joint with gothic arch shaped rollers

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as of
12/20/2025
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