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For the Inventor, By the Inventor

Duisburg, Germany

Grillo-Werke Ag


USPTO Granted Patents = 25



Trademarks = 1

Forward Citations = 196

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31 inventors (with patents filed for the assignee):

goldMedal Jochen Spriestersbach (5 out of 5 patents)

silverMedal Klaus Driemel (5 out of 5 patents)

bronzeMedal Wolfgang Glaeser (4 out of 4 patents)

4.  Norbert Lowicki (4 out of 4 patents)

5.  Dieter Mm Rohe (3 out of 3 patents)

6.  Natvarlal B Desai (3 out of 3 patents)

7.  Timo Ott (2 out of 15 patents)

8.  Ingo Biertümpel (2 out of 5 patents)

9.  Armin Melzer (2 out of 2 patents)

10.  Petra Merkel (2 out of 2 patents)

11.  Rudi Kube (2 out of 2 patents)

12.  Norbert Schulz (2 out of 2 patents)

13.  Jurgen Wisniewski (2 out of 2 patents)

14.  Ingo Biertuempel (2 out of 4 patents)

15.  Michael Knepper (2 out of 2 patents)


25 patents:

1. 11634385 - Process for the preparation of haloalkanesulfonic acids from sulfur trioxide and a haloalkane (2023-04-25),
2. 10329251 - Initiator for preparing alkanesulfonic acids from alkane and oleum (2019-06-25),
3. 7524582 - Zinc powder or zinc alloy powder for alkaline batteries (2009-04-28),
4. 7329828 - Method for inert gas welding or inert gas soldering of workpieces comprising identical or different metals or metal alloys by means of an additional Zn/Al metal (2008-02-12),
5. 7323031 - Zinc powder or zinc alloy powder with inhomogeneous bulk density for alkaline batteries (2008-01-29),
6. 7067094 - Process for the brightening of sodium hydrogensulfate (2006-06-27),
7. 6706220 - Mixture consisting of metal particles and/or alloy particles and of a liquid electrolytic medium and method for producing the same (2004-03-16),
8. 6680085 - Method and device for thermal spraying for the coating of surfaces (2004-01-20),
9. 6376102 - Thermally sprayed anticorrosion layer for reinforced concrete and method for making the preparation thereof (2002-04-23),
10. 6224943 - Method for improving the corrosion resistance of reinforced concrete (2001-05-01),
11. 6071359 - Shot for use as ammunition (2000-06-06),
12. 6060621 - Process for the preparation of methanesulfonic acid (2000-05-09),
13. 5240793 - Alkaline batteries containing a zinc powder with indium and bismuth (1993-08-31),
14. 5191155 - Process for nonpolluting destruction of polychlorinated waste materials (1993-03-02),
15. 4968496 - Deodorants and the preparation and use thereof (1990-11-06),
Grillo-Werke AG is a German company specializing in the production of chemically defined zinc oxide and zinc salts. With over 200 years of experience, Grillo-Werke has established itself as a leading global supplier of high-quality zinc products for various industries including rubber, ceramics, pharmaceuticals, and electronics.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

25 Patents

#14 in Duisburg

#1,846 in Germany

#25,651 in the World

Duisburg, DE
Duisburg, Germany

Grillo-Werke Ag

Forward Citations = 196

31 inventors:

goldMedal Jochen Spriestersbach (5 out of 5 patents)

silverMedal Klaus Driemel (5 out of 5 patents)

bronzeMedal Wolfgang Glaeser (4 out of 4 patents)

4.  Norbert Lowicki (4 out of 4 patents)

5.  Dieter Mm Rohe (3 out of 3 patents)

Please report any incorrect information to [email protected]
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