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Weesp, Netherlands

Duphar International Research Bv

USPTO Granted Patents = 169

CIPO Patents = 2

Forward Citations = 3,448

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186 inventors (with patents filed for the assignee):

Ineke Van Wijngaarden (27 out of 28 patents)

Cornelis G Kruse (16 out of 54 patents)

Derk Hamminga (15 out of 15 patents)

4. Sebastianus J Halkes (13 out of 14 patents)

5. Arnoldus C Grosscurt (12 out of 13 patents)

6. Wouter Wouters (11 out of 11 patents)

7. Roelof Van Hes (9 out of 13 patents)

8. Hans H Haeck (9 out of 9 patents)

9. Johannes Kuipers (9 out of 10 patents)

10. Hendrik Dolman (9 out of 10 patents)

11. Antonio Mourino (8 out of 8 patents)

12. Jan Van Dijk (8 out of 13 patents)

13. Marius S Brouwer (8 out of 9 patents)

14. Kobus Wellinga (7 out of 16 patents)

15. Jan Hartog (7 out of 11 patents)

Core Competencies:

Piperazine Compounds

Piperidine Compounds

Vitamin D Compounds

Corticotropin Releasing Factor Antagonists

Influenza Vaccine

Liposome Formulations

Optically Active Cyanohydrins

Psychotropic Activity

Enantiomerically Pure Compounds

Delayed Release Formulations

Automatic Injectors

Bicyclic Heteroacrylpiperazine Derivatives

169 patents: Sort by Forward Citations

1. RE41425 - Piperazine and piperidine compounds (2010-07-05),

2. 6780864 - Piperazine and piperidine compounds (2004-08-24),

3. 6391896 - 3-Tetrahydropyridin-4-yl indoles for treatment of psychotic disorders (2002-05-21),

4. 6365743 - Process for the preparation of enantiomerically pure imidazolyl compounds (2002-04-02),

5. 6350750 - Quinoline and quinazoline derivatives having corticotropin releasing factor (CRF) antagonist activity (2002-02-26),

6. 6335326 - Benzisoxazole derivatives having d4-antagonistic activity (2002-01-01),

7. 6281216 - 2-aminoquinoline derivatives having d4-agonistic activity (2001-08-28),

8. 6225312 - Piperazine and piperidine compounds (2001-05-01),

9. 6214829 - Piperazine compounds, their preparation, and methods of using them (2001-04-10),

10. 6183780 - Oral delayed immediate release formulation and method for preparing the same (2001-02-06),

11. 6090812 - Piperazine and piperidine compounds (2000-07-18),

12. 6080878 - Method of preparing 16-dehydro vitamin D compounds (2000-06-27),

13. 6075015 - Vitamin D compounds and method of preparing these compounds (2000-06-13),

14. 6072062 - Synthesis of C.sub.18 -modified vitamin D compounds and compounds (2000-06-06),

15. 5948909 - Process for the stereoselective preparation of a hetero-bicyclic alcohol (1999-09-07),

DUPHAR International Research BV is a renowned pharmaceutical company specializing in research and development. With a focus on innovative medications, DUPHAR aims to improve the well-being and health of patients worldwide. The company is committed to conducting advanced scientific research and bringing new treatments to market in various therapeutic areas. Visit our website to learn more about our cutting-edge research and groundbreaking pharmaceutical products.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

169 Patents

#1 in Weesp

#52 in Netherlands

#4,756 in the World

Weesp, Netherlands

Duphar International Research Bv

Forward Citations = 3,448

186 inventors:

Ineke Van Wijngaarden (27 out of 28 patents)

Cornelis G Kruse (16 out of 54 patents)

Derk Hamminga (15 out of 15 patents)

4. Sebastianus J Halkes (13 out of 14 patents)

5. Arnoldus C Grosscurt (12 out of 13 patents)

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