Growing community of inventors

Cheshire, United Kingdom

John Derek Capper

Average Co-Inventor Count = 4.00

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 = 71

John Derek CapperRichard Llewellyn Powell (3 patents)John Derek CapperJohn Edward Poole (3 patents)John Derek CapperJames Victor Thomas (3 patents)John Derek CapperJohn Derek Capper (3 patents)Richard Llewellyn PowellRichard Llewellyn Powell (38 patents)John Edward PooleJohn Edward Poole (14 patents)James Victor ThomasJames Victor Thomas (5 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Refrigerant Products, Ltd. (2 from 2 patents)

2. Refringerant Products Ltd. (1 from 1 patent)


3 patents:

1. 6629419 - CFC 12 replacement refrigerant

2. 6606868 - R 22 replacement refrigerant

3. 6604368 - R 12 replacement refrigerant

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12/6/2025
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