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Hexham, United Kingdom

David Roy Sandbach

Average Co-Inventor Count = 3.00

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 = 53

David Roy SandbachJean Wevers (4 patents)David Roy SandbachAnn Margaret Irvin (2 patents)David Roy SandbachPaul Meredith (1 patent)David Roy SandbachKatrien Andrea Tony Hellings (1 patent)David Roy SandbachGautier Engisch (1 patent)David Roy SandbachDavid Roy Sandbach (4 patents)Jean WeversJean Wevers (42 patents)Ann Margaret IrvinAnn Margaret Irvin (2 patents)Paul MeredithPaul Meredith (7 patents)Katrien Andrea Tony HellingsKatrien Andrea Tony Hellings (3 patents)Gautier EngischGautier Engisch (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. The Procter Gamble Company (4 from 17,164 patents)


4 patents:

1. 7442678 - Stain removal method utilizing a composition comprising hydrogen peroxide and cyclodextrin

2. 6838423 - Method of stain removal from garments worn on the body

3. 6832867 - Fabric treatment applicator

4. 6644879 - Stain removal pen with optimal application device

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as of
12/4/2025
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