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Whitefield, United Kingdom

John K Humphreys

Average Co-Inventor Count = 2.25

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 = 17

John K HumphreysJoseph Valentine (3 patents)John K HumphreysDonald Jones (1 patent)John K HumphreysJohn K Humphreys (3 patents)Joseph ValentineJoseph Valentine (3 patents)Donald JonesDonald Jones (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Chloride Group Public Limited Company (3 from 19 patents)


3 patents:

1. D285191 - Electric storage battery

2. 4579790 - Electric storage batteries

3. 4562128 - Electric storage batteries

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as of
12/19/2025
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