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For the Inventor, By the Inventor

Hillegom, Netherlands

Witteman + Co.


USPTO Granted Patents = 52

Forward Citations = 19

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29 inventors (with patents filed for the assignee):

goldMedal Jan Verschoor (18 out of 44 patents)

silverMedal Henricus Gijsbertus Johannes Verduin (4 out of 7 patents)

bronzeMedal Cornelius Petrus Franciscus Kools (2 out of 2 patents)

4.  Petrus Thomas Damen (2 out of 2 patents)

5.  Aart Wijnhout (2 out of 2 patents)

6.  Hendrik Jan Van Den Top (1 out of 11 patents)

7.  Dick Degenhardt (1 out of 5 patents)

8.  Richard Eaton Davis (1 out of 1 patent)

9.  Ard Van Klaveren (1 out of 1 patent)

10.  Gert Van Buren (1 out of 2 patents)

11.  Peter Van Steijn (1 out of 1 patent)

12.  Betty Ann Addison (1 out of 1 patent)

13.  Cornelis Petrus Maria Van Ostaayen (1 out of 1 patent)

14.  Pieter Van Manen (1 out of 1 patent)

15.  Hubertus Jozef Maria Vink (1 out of 1 patent)


Core Competencies:
Phlox Plants
Astilbe Plants
Hydrangea Plants
Veronica Plants
Helenium Plants
Citrus Plants
Japanese Maple
Delphinium Plants
Sedum Plants
Chamaecyparis Plants
Buddleia Plants
Agapanthus Plants

52 patents:

1. PP19968 - Phlox plant named 'Pina Colada' (2009-04-28),
2. PP19953 - Juniper plant named 'Hulsdonk Yellow' (2009-04-21),
3. PP19948 - Chamaecyparis plant named 'Lucas' (2009-04-21),
4. PP19934 - Buddleia plant named 'Stellar Pink' (2009-04-21),
5. PP19813 - Phlox plant named 'Swizzle' (2009-03-10),
6. PP19610 - Phlox plant named 'Watermelon Punch' (2008-12-30),
7. PP19603 - Phlox plant named 'Cosmopolitan' (2008-12-30),
8. PP19600 - Phlox plant named 'Fondant Fancy' (2008-12-30),
9. PP19514 - Phlox plant named 'Purple Kiss' (2008-12-02),
10. PP19183 - Phlox plant named 'Grenadine Dream' (2008-09-09),
11. PP19106 - Astilbe plant named 'To Have and To Hold' (2008-08-19),
12. PP19093 - Astilbe plant named 'Love and Pride' (2008-08-12),
13. PP19092 - Astilbe plant named 'Diamonds and Pearls' (2008-08-12),
14. PP19048 - Phlox plan named 'Grenadine Dream' (2008-07-29),
15. PP19003 - Hosta plant named 'Great Escape' (2008-07-08),
Witteman & Co. is a leading investment management firm that specializes in creating customized investment solutions for individuals and institutions. With a team of experienced professionals, we provide tailored investment strategies to help our clients achieve their financial goals. Our commitment to excellence and client satisfaction sets us apart in the industry.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 16 2025

52 Patents

#2 in Hillegom

#156 in Netherlands

#13,151 in the World

...
Hillegom, Netherlands

Witteman + Co.

Forward Citations = 19

29 inventors:

goldMedal Jan Verschoor (18 out of 44 patents)

silverMedal Henricus Gijsbertus Johannes Verduin (4 out of 7 patents)

bronzeMedal Cornelius Petrus Franciscus Kools (2 out of 2 patents)

4.  Petrus Thomas Damen (2 out of 2 patents)

5.  Aart Wijnhout (2 out of 2 patents)

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