Growing community of inventors

Eversden, United Kingdom

David E Cumpstey

Average Co-Inventor Count = 4.00

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 = 135

David E CumpsteyStephen Owen (2 patents)David E CumpsteyRichard H Gray (2 patents)David E CumpsteyJohn R Archer (2 patents)David E CumpsteyDavid E Cumpstey (2 patents)Stephen OwenStephen Owen (10 patents)Richard H GrayRichard H Gray (4 patents)John R ArcherJohn R Archer (4 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Merck + Co., Inc. (2 from 4,770 patents)


2 patents:

1. 5638657 - System and method for automatically feeding, inspecting and diverting

2. 5522512 - System and method for automatically feeding, inspecting and diverting

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as of
12/17/2025
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