Growing community of inventors

Horsham, United Kingdom

Charles E Chatwin

Average Co-Inventor Count = 2.22

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 = 277

Charles E ChatwinRalph Kay (2 patents)Charles E ChatwinKaren S Walker (2 patents)Charles E ChatwinDavid Ezra (1 patent)Charles E ChatwinChristopher John Fice (1 patent)Charles E ChatwinMartin C Gomme (1 patent)Charles E ChatwinCharles E Chatwin (5 patents)Ralph KayRalph Kay (10 patents)Karen S WalkerKaren S Walker (2 patents)David EzraDavid Ezra (36 patents)Christopher John FiceChristopher John Fice (1 patent)Martin C GommeMartin C Gomme (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. De La Rue Holographics Limited (2 from 6 patents)

2. Thomas De La Rue and Company Limited (2 from 5 patents)

3. De La Rue International Limited (1 from 194 patents)


5 patents:

1. 6776933 - Method of manufacturing a security item

2. 5492370 - Decorative article

3. 5438928 - Signature panels

4. 5413839 - Transfer film

5. 5310222 - Optical device

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idiyas.com
as of
12/18/2025
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