Forward Citations = 388

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9 inventors (with patents filed for the assignee):

Ralph Kay (4 out of 10 patents)

David Ezra (2 out of 36 patents)

Charles E Chatwin (2 out of 5 patents)

4. Brian William Holmes (2 out of 2 patents)

5. Kenneth John Drinkwater (2 out of 2 patents)

6. Keith A Jones (1 out of 1 patent)

7. Adam J Silk (1 out of 1 patent)

8. Martin C Gomme (1 out of 1 patent)

9. Jon Andreassen (1 out of 1 patent)

6 patents: Sort by Forward Citations

1. 5694229 - Holographic security device (1997-12-02),

2. 5665194 - Image enhancement (1997-09-09),

3. 5492370 - Decorative article (1996-02-20),

4. 5483363 - Security device (1996-01-09),

5. 5319475 - Tamper resisting holographic security seal (1994-06-07),

6. 5310222 - Optical device (1994-05-10),

Company Overview

De La Rue Holographics Limited is a leading global provider of holographic solutions for brand protection and authentication. With a heritage of over 100 years, the company offers a wide range of security features including holograms, foils, and document authentication solutions. De La Rue Holographics serves a variety of industries including government, banking, and commercial sectors.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

6 Patents

#479 in London

#2,679 in United Kingdom

London, United Kingdom

De La Rue Holographics Limited

Forward Citations = 388

9 inventors:

Ralph Kay (4 out of 10 patents)

David Ezra (2 out of 36 patents)

Charles E Chatwin (2 out of 5 patents)

4. Brian William Holmes (2 out of 2 patents)

5. Kenneth John Drinkwater (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: De La Rue Holographics Limited. Retrieved from https://idiyas.com/company/de-la-rue-holographics

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]