Growing community of inventors

Ipswich, United Kingdom

Ian Richard Stephenson

Average Co-Inventor Count = 2.42

ph-index = 2

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 = 12

Ian Richard Stephenson ↔ Kenneth West Hutt (4 patents)Ian Richard Stephenson ↔ Ha Cong Tran (2 patents)Ian Richard Stephenson ↔ Richard A Hann (1 patent)Ian Richard Stephenson ↔ Dafydd G Davies (1 patent)Ian Richard Stephenson ↔ James A Daniels (1 patent)Ian Richard Stephenson ↔ Alan John Harry (1 patent)Ian Richard Stephenson ↔ Keith William Gilbert (1 patent)Ian Richard Stephenson ↔ Paul David Pester (1 patent)Ian Richard StephensonIan Richard Stephenson (6 patents)Kenneth West HuttKenneth West Hutt (9 patents)Ha Cong TranHa Cong Tran (3 patents)Richard A HannRichard A Hann (42 patents)Dafydd G DaviesDafydd G Davies (10 patents)James A DanielsJames A Daniels (8 patents)Alan John HarryAlan John Harry (2 patents)Keith William GilbertKeith William Gilbert (1 patent)Paul David PesterPaul David Pester (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Imperial Chemical Industries Limited (6 from 3,840 patents)


6 patents:

1. 5917530 - Dye diffusion thermal transfer printing

2. 5812173 - Thermal transfer printing

3. 5670447 - 35mm format transparencies

4. 5602072 - Thermal transfer printing dye sheet

5. 5430003 - Thermal transfer printing receiver sheet and method

6. 5003032 - Aromatic polymers

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as of
1/10/2026
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