For the Inventor, By the Inventor

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Manitowoc, WI, United States of America

Manitowoc Crane Group, LLC

USPTO Granted Patents = 10

Trademarks = 5

Forward Citations = 117

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12 inventors (with patents filed for the assignee):

David J Pech (5 out of 52 patents)

Kenneth J Porubcansky (2 out of 18 patents)

Robert J Walker (2 out of 17 patents)

4. Charles R Wernecke (2 out of 5 patents)

5. Joseph R Rucinski (1 out of 10 patents)

6. Michael J Wanek (1 out of 9 patents)

7. Alan E Pleuss (1 out of 7 patents)

8. Daniel L Krajnik (1 out of 2 patents)

9. Arthur G Zuehlke (1 out of 7 patents)

10. Terry L Petzold (1 out of 4 patents)

11. John M Lanning (1 out of 2 patents)

12. Jeffery L Dreger (1 out of 1 patent)

10 patents: Sort by Forward Citations

1. 9278834 - Lift crane with moveable counterweight (2016-03-08),

2. 6269635 - Control and hydraulic system for a liftcrane (2001-08-07),

3. 6244449 - Free fall disconnect (2001-06-12),

4. 6213318 - Rotatable connection system for crane boom sections (2001-04-10),

5. 6158535 - Mechanical track drive (2000-12-12),

6. 6131751 - Counter weight handling system and boom parking device (2000-10-17),

7. 6062405 - Hydraulic boom hoist cylinder crane (2000-05-16),

8. 6010018 - Swing lock mechanism (2000-01-04),

9. 5941401 - Counterweight handling system for ring supported cranes (1999-08-24),

10. 5842587 - Offsetting link assembly for folding luffing jib (1998-12-01),

Manitowoc Crane Group, LLC is a leading global manufacturer of cranes and lifting solutions for the construction industry. With a history dating back over 100 years, Manitowoc is known for its innovation, quality, and reliability in the industry. The company offers a wide range of crane products, including mobile cranes, tower cranes, and boom trucks, and serves customers worldwide through a network of dealers and distributors.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

10 Patents

#12 in Manitowoc, WI

#657 in Wisconsin

#28,938 in US

#54,238 in the World

Manitowoc, WI, United States of America

Manitowoc Crane Group, LLC

Forward Citations = 117

12 inventors:

David J Pech (5 out of 52 patents)

Kenneth J Porubcansky (2 out of 18 patents)

Robert J Walker (2 out of 17 patents)

4. Charles R Wernecke (2 out of 5 patents)

5. Joseph R Rucinski (1 out of 10 patents)

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