Average Co-Inventor Count = 1.00
ph-index = 2
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.
Company Filing History:
1. Gebr. Vletter & J. A. Den Haan (16 from 16 patents)
2. Gebr. Vletter & J.a. (7 from 7 patents)
3. De Vennootschap Onder Firma Gebr, Vletter & J.a. Den Haan (3 from 3 patents)
4. Gebr. Vletter & J. H. Den Haan (1 from 1 patent)
27 patents:
1. PP8550 - Lily plant named Ventoux
2. PP8365 - Lily plant named Madras
3. PP8347 - Lily plant named Alaska
4. PP8324 - Lily plant named Cartouche
5. PP8325 - Lily plant named Cascade
6. PP8322 - Lily plant named Marco Polo
7. PP8323 - Lily plant named Nove Cento
8. PP8326 - Lily plant named Oxford
9. PP8313 - Lily plant named Acapulco
10. PP8309 - Lily plant named Belcanto
11. PP8314 - Lily plant named Berlin
12. PP8311 - Lily plant named Con Amore
13. PP8312 - Lily plant named D'Oleron
14. PP8317 - Lily plant named Pesaro
15. PP8310 - Lily plant named Widor