Growing community of inventors

Enkhuizen, Netherlands

Henricus Godefridus Wilhelmus Stemkens

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.

Forward Citations = 7

Henricus Godefridus Wilhelmus StemkensHenricus Godefridus Wilhelmus Stemkens (88 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Syngenta Participations Ag (51 from 1,777 patents)

2. Syngenta Crop Protection Ag (36 from 663 patents)

3. Ditoplant Export Bv (1 from 7 patents)


88 patents:

1. PP32762 - plant named 'LEUZ0006'

2. PP32635 - plant named 'VEAZ0057'

3. PP32382 - plant named 'HEMZ0001'

4. PP32363 - plant named 'VEAZ0059'

5. PP32339 - plant named 'HEMZ0005'

6. PP32294 - plant named 'HEMZ0003'

7. PP32121 - plant named 'Q3597-2'

8. PP31923 - plant named 'VEAZ0054'

9. PP31902 - plant named 'ERFZ0006'

10. PP31801 - plant named 'ERFZ0005'

11. PP31776 - plant named 'ERFZ0004'

12. PP31619 - plant named 'ERFZ0007'

13. PP31186 - plant named 'LAAZ0008'

14. PP31165 - plant named 'VEAZ0048'

15. PP31163 - plant named 'VEAZ0050'

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as of
9/9/2025
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