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For the Inventor, By the Inventor

Cambridge, United Kingdom

Phytopharm Plc


USPTO Granted Patents = 14

% Expired Patents = 71.4


Forward Citations = 86

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30 inventors (with patents filed for the assignee):

goldMedal Zongqin Xia (5 out of 5 patents)

silverMedal Yaer Hu (5 out of 5 patents)

bronzeMedal Brian Anthony Whittle (4 out of 28 patents)

4.  Ian Duncan Rubin (4 out of 6 patents)

5.  Philip James Gunning (3 out of 3 patents)

6.  Daryl David Rees (3 out of 4 patents)

7.  Paul Barraclough (3 out of 7 patents)

8.  Phil Gunning (3 out of 3 patents)

9.  Jonathan Brostoff (3 out of 7 patents)

10.  Weijun Wang (3 out of 3 patents)

11.  Frederik Michiel Meeuse (2 out of 9 patents)

12.  Vinesh Jaichand Maharaj (2 out of 10 patents)

13.  Roelof Marthinus Horak (2 out of 6 patents)

14.  Jim Hanson (2 out of 2 patents)

15.  John Hakkinen (2 out of 3 patents)


14 patents:

1. 7923435 - [object Object] (2011-04-12),
2. 7807204 - [object Object] (2010-10-05),
3. 7718792 - Stereospecific reduction of sapogen-3-ones (2010-05-18),
4. 7589123 - Chemical compounds (2009-09-15),
5. 7507720 - 5-Beta-sapogenin and pseudosapogenin derivatives and their use in the treatment of dementia (2009-03-24),
6. 7368137 - Smilagenin and its use (2008-05-06),
7. 7138427 - 5-β-sapogenin and pseudosapogenin derivatives and their use in the treatment of dementia (2006-11-21),
8. 7033616 - Extracts, compounds and pharmaceutical compositions having anti-diabetic activity and their use (2006-04-25),
9. 6812213 - Steroidal sapogenins and their derivatives for treating alzheimer's disease (2004-11-02),
10. 6808723 - Gastric acid secretion (2004-10-26),
11. 6488967 - Gastric acid secretion (2002-12-03),
12. 6258386 - Smilagenin and its use (2001-07-10),
13. 6114389 - Use of a pharmaceutically acceptable oxalate derivative for the (2000-09-05),
14. 5466452 - Pharmaceutical compositions for the treatment of skin disorders (1995-11-14),
Company Overview
Phytopharm Plc is a biotechnology company based in Cambridge, UK, specializing in the development of innovative therapies derived from plant-based compounds. The organization focuses on harnessing the potential of natural products to create effective treatments for various health conditions, particularly in the fields of oncology and neurology. With a commitment to advancing scientific research, Phytopharm collaborates with academic institutions and industry partners to explore novel applications of its proprietary technologies.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

14 Patents

#79 in Cambridge

#1,267 in United Kingdom

#42,199 in the World

Cambridge, GB
Cambridge, United Kingdom

Phytopharm Plc

Forward Citations = 86

30 inventors:

goldMedal Zongqin Xia (5 out of 5 patents)

silverMedal Yaer Hu (5 out of 5 patents)

bronzeMedal Brian Anthony Whittle (4 out of 28 patents)

4.  Ian Duncan Rubin (4 out of 6 patents)

5.  Philip James Gunning (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Phytopharm Plc. Retrieved from https://idiyas.com/company/phytopharm

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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