Growing community of inventors

Cleveland, United Kingdom

David Stubbs

Average Co-Inventor Count = 1.60

ph-index = 1

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 = 0

David StubbsDuncan William John McCallien (3 patents)David StubbsDarrell Green (4 patents)David StubbsDuncan William John Mccallien (0 patent)David StubbsDavid Stubbs (4 patents)Duncan William John McCallienDuncan William John McCallien (7 patents)Darrell GreenDarrell Green (4 patents)Duncan William John MccallienDuncan William John Mccallien (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Johnson Matthey Public Limited Company (3 from 837 patents)

2. Johnson Matthey Inc. (268 patents)


4 patents:

1. 12058989 - Angling device

2. 10816533 - Method of marking hydrocarbon liquids

3. 10106754 - Method of marking hydrocarbon liquids

4. 9678054 - Method of marking hydrocarbon liquids

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as of
1/10/2026
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