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Düsseldorf, Germany

Sack Gmbh

USPTO Granted Patents = 14

Forward Citations = 59

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14 inventors (with patents filed for the assignee):

Emil F Kersting (4 out of 4 patents)

Manfred W Hansen (3 out of 6 patents)

Rolf Schulte (2 out of 2 patents)

4. Ernst Th Sack (2 out of 2 patents)

5. Rudolf Guse (1 out of 4 patents)

6. Horst Zurmahr (1 out of 1 patent)

7. Friedrich Nordmeyer (1 out of 1 patent)

8. Jakob Wetter (1 out of 1 patent)

9. Gunter K Pinkow (1 out of 1 patent)

10. Hans Langen (1 out of 1 patent)

11. Herbert Hansen (1 out of 3 patents)

12. Karl H Margraf (1 out of 1 patent)

13. Karl Griese (1 out of 1 patent)

14. Willi Wrossok (1 out of 1 patent)

14 patents: Sort by Forward Citations

1. 4476914 - Method and apparatus for cooling metal strands, more particularly slab (1984-10-16),

2. 4354411 - Cold shears and method for cutting billets and bars (1982-10-19),

3. 4342358 - Continuous casting installation (1982-08-03),

4. 4333370 - Method and plant for slitting a hot slab emerging from a continuous (1982-06-08),

5. 4312209 - Method for operating a strip rolling mill (1982-01-26),

6. 4251180 - Roll-changing apparatus (1981-02-17),

7. 4218159 - Multiple-part hobbing cutter (1980-08-19),

8. 4217950 - Continuous casting apparatus (1980-08-19),

9. 4204449 - Flying cropping shears for hot strip (1980-05-27),

10. 4199084 - Foundry ladle support device having guides for ladle placement (1980-04-22),

11. 4161885 - Measuring apparatus for measuring the roll gap in gauge-controlled roll (1979-07-24),

12. 4161115 - Apparatus for monitoring hydraulic plant for leakages (1979-07-17),

13. 4092891 - Apparatus for cutting steel sections (1978-06-06),

14. 4088309 - Cooling device for slabs with slab-tilting devices for turning the (1978-05-09),

Company Overview

Sack GmbH, based in Düsseldorf, specializes in the development and manufacturing of innovative packaging solutions, particularly for the food and beverage industry. The company focuses on creating high-quality, sustainable packaging that meets the evolving needs of its clients while adhering to environmental standards. With a commitment to research and development, Sack GmbH continually explores advancements in materials and technologies to enhance product performance and sustainability in packaging applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

14 Patents

#46 in Düsseldorf

#2,908 in Germany

#42,249 in the World

Düsseldorf, Germany

Sack Gmbh

Forward Citations = 59

14 inventors:

Emil F Kersting (4 out of 4 patents)

Manfred W Hansen (3 out of 6 patents)

Rolf Schulte (2 out of 2 patents)

4. Ernst Th Sack (2 out of 2 patents)

5. Rudolf Guse (1 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sack Gmbh. Retrieved from https://idiyas.com/company/sack

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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