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Lampertheim, Germany

Witco Vinyl Additives Gmbh

USPTO Granted Patents = 13

Forward Citations = 93

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15 inventors (with patents filed for the assignee):

Wolfgang Wehner (11 out of 63 patents)

Hans-Helmut Friedrich (7 out of 48 patents)

Rolf Drewes (4 out of 15 patents)

4. Karl Josef Kuhn (3 out of 10 patents)

5. Horst Zinke (2 out of 26 patents)

6. Rudolf Pfaendner (1 out of 86 patents)

7. Ernst Minder (1 out of 26 patents)

8. Heinz Herbst (1 out of 38 patents)

9. Kornelia Malzacher (1 out of 7 patents)

10. Bruno Hilti (1 out of 27 patents)

11. Jürgen Pfeiffer (1 out of 1 patent)

12. Rolf Drewes (1 out of 1 patent)

13. Hans-Ludwig Mehner (1 out of 3 patents)

14. Kurt Hoffmann (1 out of 32 patents)

15. Markus Kolb (1 out of 5 patents)

13 patents: Sort by Forward Citations

1. 6310128 - Halogen-containing polymers provided with an antistatic agent (2001-10-30),

2. 6274654 - 1,3-Disubstituted 6-aminouracils for stabilizing halogenated polymers (2001-08-14),

3. 6232375 - 4-aminopyrimidinones and oxazolidino-4-aminopyrimidinones, process for their preparation and their use for stabilizing halogen-containing polymers (2001-05-15),

4. 6211270 - Cyanoacetylureas for stabilizing halogenated polymers (2001-04-03),

5. 6194494 - Stabiliser combinations for chlorine-containing polymers (2001-02-27),

6. 6174941 - NH2-modified 6-aminouracils as stabilizers for halogenated polymers (2001-01-16),

7. 6156830 - 5-substituted 6-aminouracils as stabilizers for halogenated polymers (2000-12-05),

8. 6136900 - Stabilized polyvinyl chloride (2000-10-24),

9. 6084013 - Stabilizer system for chlorine-containing polymers (2000-07-04),

10. 6013703 - Stabilizer combination for chlorine-containing polymers (2000-01-11),

11. 6002004 - Pyrrolodiazine derivatives as stabilizers for chilorine-containing (1999-12-14),

12. 5985964 - Stabilized polyvinyl chloride containing recycled material (1999-11-16),

13. 5969015 - Monomeric and oligomeric bisphosphites as stabilisers for polyvinyl (1999-10-19),

Witco Vinyl Additives GmbH is a leading supplier of specialty additives for the vinyl industry. With a focus on innovation and research, we offer high-quality solutions for enhancing the performance and durability of vinyl products. Our product range includes heat stabilizers, impact modifiers, processing aids, and lubricants. We are committed to providing our customers with comprehensive technical support and customized solutions to meet their specific needs.

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

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USPTO Data Jan 1 1976 - Dec 30 2025

13 Patents

#1 in Lampertheim

#3,072 in Germany

#43,690 in the World

Lampertheim, Germany

Witco Vinyl Additives Gmbh

Forward Citations = 93

15 inventors:

Wolfgang Wehner (11 out of 63 patents)

Hans-Helmut Friedrich (7 out of 48 patents)

Rolf Drewes (4 out of 15 patents)

4. Karl Josef Kuhn (3 out of 10 patents)

5. Horst Zinke (2 out of 26 patents)

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