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Watlington, United Kingdom

Christopher Chapman

Average Co-Inventor Count = 2.87

ph-index = 8

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 = 614

Christopher ChapmanDavid Lee Sandbach (8 patents)Christopher ChapmanStuart Mark Walkington (4 patents)Christopher ChapmanAnthony Richard Hardie-Bick (2 patents)Christopher ChapmanJohn Burkitt (1 patent)Christopher ChapmanTimothy Charles Andrew Fitzgerald (1 patent)Christopher ChapmanAndrew Deakin (1 patent)Christopher ChapmanChristopher Chapman (8 patents)David Lee SandbachDavid Lee Sandbach (21 patents)Stuart Mark WalkingtonStuart Mark Walkington (20 patents)Anthony Richard Hardie-BickAnthony Richard Hardie-Bick (7 patents)John BurkittJohn Burkitt (3 patents)Timothy Charles Andrew FitzgeraldTimothy Charles Andrew Fitzgerald (1 patent)Andrew DeakinAndrew Deakin (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Electrotextiles Company Limited (4 from 6 patents)

2. Eleksen Limited (2 from 10 patents)

3. Elo Touch Solutions, Inc. (1 from 199 patents)

4. Soundtouch Limited (1 from 2 patents)


8 patents:

1. 8436808 - Processing signals to determine spatial positions

2. 7213991 - Flexible foldable keyboard

3. 7102614 - Manual input apparatus for a handheld device

4. 6947031 - Data processing apparatus with replacement keyboard

5. 6891527 - Processing signals to determine spatial positions

6. 6861961 - Foldable alpha numeric keyboard

7. 6639162 - Input device

8. 6585162 - Flexible data input device

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as of
1/22/2026
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