Growing community of inventors

North York, Canada

Roger Spall

Average Co-Inventor Count = 5.14

ph-index = 3

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 = 502

Roger SpallPhillip J Beaudet (3 patents)Roger SpallEduardus A Merks (3 patents)Roger SpallJonathan William Edwards (2 patents)Roger SpallMatthew Black (2 patents)Roger SpallJulian Jones (2 patents)Roger SpallMartin Rendall (1 patent)Roger SpallRoger Spall (3 patents)Phillip J BeaudetPhillip J Beaudet (4 patents)Eduardus A MerksEduardus A Merks (4 patents)Jonathan William EdwardsJonathan William Edwards (5 patents)Matthew BlackMatthew Black (2 patents)Julian JonesJulian Jones (2 patents)Martin RendallMartin Rendall (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. International Business Machines Corporation (3 from 164,108 patents)


3 patents:

1. 5689668 - Dynamic hierarchical selection menu

2. 5559945 - Dynamic hierarchical selection menu

3. 5491795 - Window management system with a hierarchical iconic array and miniature

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as of
12/5/2025
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