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De Lier, Netherlands

Rijk Zwaan Zaadteelt En Zaadhandel B.v.

USPTO Granted Patents = 366

EPO Patents = 66

Trademarks = 16

Forward Citations = 599

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142 inventors (with patents filed for the assignee):

Egbert Carolus Johannes Smits (47 out of 47 patents)

Cornelis Marinus Moor (39 out of 39 patents)

Willem Van Vliet (32 out of 32 patents)

4. Clément Michel Bernard Morice (28 out of 28 patents)

5. Cornelis Maria Petrus Van Dun (28 out of 31 patents)

6. Maria Helena Roosenboom-Kooijmans (25 out of 25 patents)

7. Johan Cornelis Solleveld (24 out of 24 patents)

8. Johannes Petrus Antonius Jansen (22 out of 22 patents)

9. Adrianus Martinus Jozeph Ammerlaan (21 out of 21 patents)

10. Johannes Wilhelmus Schut (19 out of 19 patents)

11. Jan Hugo Den Braber (19 out of 19 patents)

12. Cornelia Antoinetta Maria Luijten (18 out of 18 patents)

13. Raoul Jacobus Johannes Maria Frijters (15 out of 15 patents)

14. Vincent Laurens Adrianus Kock (14 out of 14 patents)

15. Maria Tomas Garcia (14 out of 14 patents)

Core Competencies:

Celery Morphology

Modified CULLIN1 Gene

Lettuce Variety

9-LOX5 Gene Variant

TBRFV Resistant Tomato Plant

Genetic Basis For Resistance

QTLs Conferring Resistance

CMV Resistance Allele

Hybrid Tomato Variety

Non R-Gene Mediated Resistance

Pepino Mosaic Virus Resistant Tomato Plant

Tomato Plant Producing Anthocyanins

366 patents: Sort by Forward Citations

1. 12433217 - Celery morphology (2025-10-07),

2. 12419235 - Modified CULLIN1 gene (2025-09-23),

3. 12408607 - Lettuce variety 79-ML3725 RZ (2025-09-09),

4. 12402583 - Lettuce variety 45-IC3262 RZ (2025-09-02),

5. 12396416 - Lettuce variety 45-IC3284 RZ (2025-08-26),

6. 12389847 - Lettuce variety 79-ML8166 RZ (2025-08-19),

7. 12389845 - 9-LOX5 gene variant providing powdery mildew resistance (2025-08-19),

8. 12376537 - TBRFV resistant tomato plant (2025-08-05),

9. 12369543 - Lettuce variety 79-IN1226 RZ (2025-07-29),

10. 12364223 - Lettuce variety 41-CO1089 RZ (2025-07-22),

11. 12364221 - Genetic basis forresistance (2025-07-22),

12. 12297471 - Mutant allele of the ACO2 gene (2025-05-13),

13. 12295307 - Lettuce variety 41-CO7708 RZ (2025-05-13),

14. 12256687 - Lettuce variety 41-CR2537 RZ (2025-03-25),

15. 12247212 - CYSDV resistance in members of the cucurbitaceae family (2025-03-11),

RIJK ZWAAN ZAADTEELT EN ZAADHANDEL B.V. is a leading global vegetable breeding company. They develop high-quality vegetable varieties and sell seeds to professional growers worldwide. With a strong focus on innovation and sustainability, RIJK ZWAAN aims to contribute to a healthier future with tasty and nutritious vegetables.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

366 Patents

#2 in De Lier

#24 in Netherlands

#2,434 in the World

De Lier, Netherlands

Rijk Zwaan Zaadteelt En Zaadhandel B.v.

Forward Citations = 599

142 inventors:

Egbert Carolus Johannes Smits (47 out of 47 patents)

Cornelis Marinus Moor (39 out of 39 patents)

Willem Van Vliet (32 out of 32 patents)

4. Clément Michel Bernard Morice (28 out of 28 patents)

5. Cornelis Maria Petrus Van Dun (28 out of 31 patents)

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