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Vancouver, Canada

John Chapman

Average Co-Inventor Count = 2.00

ph-index = 4

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 = 307

John ChapmanHarold David Gunn (4 patents)John ChapmanJohn Chapman (4 patents)Harold David GunnHarold David Gunn (18 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. 602531 British Columbia Ltd. (3 from 4 patents)

2. British Columbia Ltd. (1 from 1 patent)


4 patents:

1. 7921361 - Data entry for personal computing devices

2. 7716579 - Data entry for personal computing devices

3. 7681124 - Data entry for personal computing devices

4. 7293231 - Data entry for personal computing devices

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as of
1/11/2026
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