Growing community of inventors

St. Catharines, Canada

David R Duncan

Average Co-Inventor Count = 2.53

ph-index = 6

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 95

David R DuncanHeiner Ophardt (12 patents)David R DuncanHendrik Ophardt (7 patents)David R DuncanAlbrecht Lang (1 patent)David R DuncanValery Ten (1 patent)David R DuncanGoran Franjesevic (1 patent)David R DuncanSiegfried Steltenkamp (1 patent)David R DuncanOriol Prat Centellas (1 patent)David R DuncanDavid R Duncan (14 patents)Heiner OphardtHeiner Ophardt (224 patents)Hendrik OphardtHendrik Ophardt (11 patents)Albrecht LangAlbrecht Lang (9 patents)Valery TenValery Ten (5 patents)Goran FranjesevicGoran Franjesevic (3 patents)Siegfried SteltenkampSiegfried Steltenkamp (2 patents)Oriol Prat CentellasOriol Prat Centellas (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Op-hygiene IP Gmbh (12 from 109 patents)

2. Gotohti. Com Inc. (2 from 73 patents)


14 patents:

1. 11980327 - Interactive display device

2. 11720775 - Method providing superimposed machine readable tags for dispenser and replaceable reservoir

3. 11347984 - Method providing superimposed machine readable tags for dispenser and replaceable reservoir

4. 10993587 - Interactive display device

5. 10671902 - Method providing superimposed QR code for dispenser and replaceable reservoir

6. 10368701 - Reservoir with removable mobile dispenser

7. 10244901 - Levitation fluid dispenser

8. 10242301 - Superimposed QR code for dispenser and replaceable reservoir

9. 10178928 - Interactive display device

10. 9993119 - Liquid dispenser with removable mobile dispenser

11. D798080 - Dispenser

12. 9357886 - Dispenser shroud

13. D628421 - Dispenser

14. D591544 - Dispenser

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idiyas.com
as of
12/20/2025
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