Growing community of inventors

Manchester, United Kingdom

Harry R Hadfield

Average Co-Inventor Count = 3.00

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 = 3

Harry R HadfieldGerald Williams (1 patent)Harry R HadfieldHarry Hall Sumner (1 patent)Harry R HadfieldHarry R Hadfield (1 patent)Gerald WilliamsGerald Williams (4 patents)Harry Hall SumnerHarry Hall Sumner (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Imperial Chemical Industries Limited (1 from 3,840 patents)


1 patent:

1. 4128395 - Transfer printing with carboxylic dyes

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12/10/2025
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