For the Inventor, By the Inventor

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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):

Malcolm R Knight (4 out of 4 patents)

Paul Howland (3 out of 11 patents)

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: Sort by Forward Citations

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),

Portals Limited is a leading IT solutions provider specializing in web and mobile application development. With a team of experienced developers and designers, we offer customized solutions to help businesses achieve their goals. Our services include web development, mobile app development, e-commerce solutions, and digital marketing. We have a proven track record of delivering high-quality projects on time and within budget. Contact us today to see how we can help your business succeed.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

13 Patents

#265 in London

#1,361 in United Kingdom

#44,950 in the World

London, United Kingdom

Portals Limited

Forward Citations = 489

16 inventors:

Malcolm R Knight (4 out of 4 patents)

Paul Howland (3 out of 11 patents)

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)

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