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For the Inventor, By the Inventor

London, United Kingdom

Portals Limited


USPTO Granted Patents = 13

Trademarks = 2

Forward Citations = 489

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16 inventors (with patents filed for the assignee):

goldMedal Malcolm R Knight (4 out of 4 patents)

silverMedal Paul Howland (3 out of 11 patents)

bronzeMedal Jonathan Paul Foulkes (2 out of 2 patents)

4.  David J Edwards (2 out of 3 patents)

5.  Alan J Tooth (2 out of 2 patents)

6.  Craig Harvey Nelson (1 out of 3 patents)

7.  Roland Isherwood (1 out of 9 patents)

8.  Duncan Hamilton Reid (1 out of 4 patents)

9.  Sarah A Rocca (1 out of 3 patents)

10.  Raymond J Melling (1 out of 1 patent)

11.  Robin E Godfrey (1 out of 4 patents)

12.  Jeffrey A Harrison (1 out of 1 patent)

13.  Robert John Furley (1 out of 1 patent)

14.  William Albert Wood (1 out of 1 patent)

15.  Neil Pask (1 out of 1 patent)


13 patents:

1. 6063239 - Security paper (2000-05-16),
2. 5928471 - Security features for paper (1999-07-27),
3. 5868902 - Security paper (1999-02-09),
4. 5678863 - High value documents (1997-10-21),
5. 5631039 - Security thread, a film and a method of manufacture of a security thread (1997-05-20),
6. 5405500 - Method for making sheet materials and security paper (1995-04-11),
7. 5388862 - Security articles (1995-02-14),
8. 5093184 - Security paper with metallic patterned elongated security element (1992-03-03),
9. 4943093 - Security paper for bank notes and the like (1990-07-24),
10. 4462867 - Paper incorporating a partially embedded strip (1984-07-31),
11. 4462866 - Sheet materials (1984-07-31),
12. 4183989 - Security papers (1980-01-15),
13. 4037007 - Document authentification paper (1977-07-19),
Company Overview
Portals Limited is a London-based company specializing in the development and manufacturing of high-quality security paper products. The organization is renowned for its expertise in producing banknotes, passports, and other secure documents, leveraging advanced technologies to ensure durability and resistance to counterfeiting. With a strong focus on innovation, Portals Limited plays a significant role in the security printing industry, catering to clients globally while maintaining a commitment to quality and sustainability.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

13 Patents

#267 in London

#1,365 in United Kingdom

#45,081 in the World

London, GB
London, United Kingdom

Portals Limited

Forward Citations = 489

16 inventors:

goldMedal Malcolm R Knight (4 out of 4 patents)

silverMedal Paul Howland (3 out of 11 patents)

bronzeMedal Jonathan Paul Foulkes (2 out of 2 patents)

4.  David J Edwards (2 out of 3 patents)

5.  Alan J Tooth (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Portals Limited. Retrieved from https://idiyas.com/company/portals

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]
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