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Cumbria, United Kingdom

Stephen Armstrong

Average Co-Inventor Count = 3.00

ph-index = 1

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 = 9

Stephen ArmstrongIan Alexander Gordon (1 patent)Stephen ArmstrongRaymond G Evans (1 patent)Stephen ArmstrongStephen Armstrong (1 patent)Ian Alexander GordonIan Alexander Gordon (7 patents)Raymond G EvansRaymond G Evans (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Alliedsignal Inc. (1 from 3,002 patents)


1 patent:

1. 5489072 - Seat belt retractor with pre-tensioner

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as of
12/16/2025
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