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Heemskerk, Netherlands

Henricus Gijsbertus Johannes Verduin

Average Co-Inventor Count = 1.00

ph-index = 1

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 = 0

Henricus Gijsbertus Johannes VerduinHenricus Gijsbertus Johannes Verduin (7 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Witteman + Co. (4 from 52 patents)


7 patents:

1. PP25382 - plant named 'Honky Tonk'

2. PP25383 - plant named 'New Wave'

3. PP24165 - plant named 'Hip Hop'

4. PP19106 - Astilbe plant named 'To Have and To Hold'

5. PP19092 - Astilbe plant named 'Diamonds and Pearls'

6. PP19093 - Astilbe plant named 'Love and Pride'

7. PP16451 - Astilbe plant named 'Heart and Soul'

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12/19/2025
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