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Oxford, United Kingdom

Powderject Research Limited

USPTO Granted Patents = 35

% Expired Patents = 25.7

EPO Patents = 4

Forward Citations = 1,654

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39 inventors (with patents filed for the assignee):

Brian John Bellhouse (13 out of 34 patents)

John Christopher Greenford (10 out of 11 patents)

David Francis Sarphie (10 out of 12 patents)

4. Stuart G Weekes (6 out of 23 patents)

5. Yuh-Fun Maa (4 out of 15 patents)

6. Emily L Bellhouse (4 out of 4 patents)

7. Terry L Burkoth (4 out of 25 patents)

8. Bruce MacMichael (3 out of 3 patents)

9. Duncan Westland (3 out of 3 patents)

10. John Bell (3 out of 3 patents)

11. Charles David Potter (3 out of 3 patents)

12. Graeme L Paterson (3 out of 4 patents)

13. Steven J Prestrelski (2 out of 27 patents)

14. Sung Yun Kwon (2 out of 5 patents)

15. David Stuart Potter (2 out of 9 patents)

Core Competencies:

Needleless Syringe

Particle Delivery

Supersonic Gas Flow

Hydrogel Particle

Immunodiagnostics

Trans-mucosal Delivery

Disposable Injector

Monitoring Methods

Particle Formation

Delivery Techniques

Cassette Kit

Small Quantities

35 patents: Sort by Forward Citations

1. 8349364 - Nucleic acid coated particles suitable for temporary storage (2013-01-08),

2. 8061006 - Particle cassette, method and kit therefor (2011-11-22),

3. 7942846 - Needleless syringe using supersonic gas flow for particle delivery (2011-05-17),

4. 7909793 - Silencing device and method for needleless syringe (2011-03-22),

5. 7868260 - Apparatus and method for dispensing small quantities of particles (2011-01-11),

6. 7618394 - Needleless syringe using supersonic gas flow for particle delivery (2009-11-17),

7. 7547292 - Needleless syringe (2009-06-16),

8. 7358451 - Apparatus and method for dispensing small quantities of particles (2008-04-15),

9. 7229645 - Spray freeze-dried compositions (2007-06-12),

10. 7207967 - Particle delivery (2007-04-24),

11. 7182748 - Syringe and capsule therefor (2007-02-27),

12. D519633 - Syringe (2006-04-25),

13. 7022313 - Hydrogel particle formulation (2006-04-04),

14. 6987228 - Apparatus and method for dispensing small quantities of particles (2006-01-17),

15. 6893664 - Particle delivery techniques (2005-05-17),

Powderject Research Limited is a biotechnology company based in Oxford, UK, specializing in the development of innovative drug delivery systems. The organization focuses on needle-free vaccine delivery technologies, leveraging its expertise in powder formulation and aerosolization. By advancing methods for administering vaccines and therapeutics, Powderject aims to enhance patient compliance and improve healthcare outcomes. Its research initiatives contribute significantly to the fields of immunology and pharmaceutical sciences.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

35 Patents

#9 in Oxford

#516 in United Kingdom

#19,137 in the World

Oxford, United Kingdom

Powderject Research Limited

Forward Citations = 1,654

39 inventors:

Brian John Bellhouse (13 out of 34 patents)

John Christopher Greenford (10 out of 11 patents)

David Francis Sarphie (10 out of 12 patents)

4. Stuart G Weekes (6 out of 23 patents)

5. Yuh-Fun Maa (4 out of 15 patents)

Please report any incorrect information to [email protected]

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