Growing community of inventors

Southampton, United Kingdom

Nigel David Warren

Average Co-Inventor Count = 2.57

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 = 101

Nigel David WarrenRosemary Elizabeth O'Reilly (2 patents)Nigel David WarrenKevin Gerard MacAdam (2 patents)Nigel David WarrenGraham Albert Read (1 patent)Nigel David WarrenNigel David Warren (3 patents)Rosemary Elizabeth O'ReillyRosemary Elizabeth O'Reilly (6 patents)Kevin Gerard MacAdamKevin Gerard MacAdam (2 patents)Graham Albert ReadGraham Albert Read (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. British American Tobacco (Investments) Limited (2 from 395 patents)

2. British-American Tobacco Company Limited (1 from 121 patents)


3 patents:

1. 7249605 - Tobacco smoke filter elements

2. 7100420 - Cigarette monitoring

3. 6631722 - Tobacco smoke filter elements

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as of
1/14/2026
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