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Forward Citations = 13

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5 inventors (with patents filed for the assignee):

Peter R Kolster (14 out of 51 patents)

Jan De Jong (12 out of 24 patents)

Pieter Kolster (1 out of 3 patents)

4. Jack Boot (1 out of 1 patent)

5. Hans Van Leyssen (1 out of 1 patent)

29 patents: Sort by Forward Citations

1. PP16452 - Weigela plant named 'Kolmas' (2006-04-18),

2. PP16042 - Rose plant named 'Kolgian' (2005-10-18),

3. PP14911 - Hypericum plant named 'Kolmblac' (2004-06-16),

4. PP14570 - Symphoricarpos plant named 'Bokrabright' (2004-03-03),

5. PP14562 - Hypericum plant named 'Kolmfir' (2004-02-25),

6. PP14561 - Symphoricarpos plant named 'Kolmsno' (2004-02-25),

7. PP14120 - Cotinus plant named 'Kolcot' (2003-09-03),

8. PP13895 - Baccharis plant named 'Kolmstar' (2003-06-18),

9. PP13774 - Philadelphus plant named 'Snowwhite Fantasy' (2003-05-07),

10. PP13770 - Baccharis plant named 'Kolmsil' (2003-05-07),

11. PP13768 - Ilex plant named 'Kolmber' (2003-05-07),

12. PP13744 - Baccharis plant named 'Kolmmyst' (2003-04-30),

13. PP13585 - Rose plant named 'Kolmag' (2003-02-19),

14. PP13584 - Photinia plant named 'Kolcurl' (2003-02-19),

15. PP13582 - Rose plant named 'Kolamaz' (2003-02-19),

Gebr. Kolster B.v. is a family-owned company based in the Netherlands specializing in the manufacturing and distribution of high-quality agricultural machinery. With over 50 years of experience, they have established a reputation for innovation and reliability in the industry. Their range of products includes seed drills, soil cultivators, and other farming equipment designed to improve efficiency and productivity for farmers worldwide.

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Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

29 Patents

#2 in Boskoop

#250 in Netherlands

#21,857 in the World

Boskoop, Netherlands

Gebr. Kolster B.v.