Growing community of inventors

Nottingham, United Kingdom

David N Johnston

Average Co-Inventor Count = 4.33

ph-index = 5

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 = 198

David N JohnstonBruce Jeremy Sargent (4 patents)David N JohnstonLee Daniel Arnold (3 patents)David N JohnstonPaul Rafferty (3 patents)David N JohnstonJames Edward Jeffery (3 patents)David N JohnstonRainer Munschauer (3 patents)David N JohnstonJohn R Housley (3 patents)David N JohnstonGavin C Hirst (2 patents)David N JohnstonDavid J Calderwood (2 patents)David N JohnstonHelen L Twigger (2 patents)David N JohnstonAndrew Philip Crew (2 patents)David N JohnstonBernard John Armitage (1 patent)David N JohnstonHormoz Mazdiyasni (1 patent)David N JohnstonDavid John Calderwood (1 patent)David N JohnstonBojuan B Deng (1 patent)David N JohnstonGerald B Tometzki (1 patent)David N JohnstonDavid N Johnston (8 patents)Bruce Jeremy SargentBruce Jeremy Sargent (10 patents)Lee Daniel ArnoldLee Daniel Arnold (40 patents)Paul RaffertyPaul Rafferty (22 patents)James Edward JefferyJames Edward Jeffery (17 patents)Rainer MunschauerRainer Munschauer (14 patents)John R HousleyJohn R Housley (4 patents)Gavin C HirstGavin C Hirst (32 patents)David J CalderwoodDavid J Calderwood (22 patents)Helen L TwiggerHelen L Twigger (3 patents)Andrew Philip CrewAndrew Philip Crew (2 patents)Bernard John ArmitageBernard John Armitage (21 patents)Hormoz MazdiyasniHormoz Mazdiyasni (7 patents)David John CalderwoodDavid John Calderwood (5 patents)Bojuan B DengBojuan B Deng (1 patent)Gerald B TometzkiGerald B Tometzki (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. The Boots Company Plc (3 from 171 patents)

2. Knoll Aktiengesellschaft (2 from 84 patents)

3. Basf Aktiengesellschaft (1 from 10,754 patents)

4. Abbott Laboratories Corporation (1 from 4,177 patents)

5. Abbott Gmbh & Co Kg (1 from 139 patents)


8 patents:

1. 7863444 - 4-aminopyrrolopyrimidines as kinase inhibitors

2. 6713474 - Pyrrolopyrimidines as therapeutic agents

3. 6001839 - Substituted 4-amino-7H-pyrrolo [2,3,-d]-pyrimidines as PTK inhibitors

4. 5807868 - Isoquinoline derivatives as therapeutic agents

5. 5804586 - Therapeutic agents

6. 5047432 - Arylcyclobutylmethylamine therapeutic agents

7. 4925879 - Arylcyclobutylmethylamines

8. 4833143 - Antidepressant amines

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as of
12/13/2025
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