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For the Inventor, By the Inventor

Sturgeon Bay, WI, United States of America

Marine Travelift, Inc.

Calculating rank
USPTO Granted Patents = 23


Trademarks = 9

Forward Citations = 262

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11 inventors (with patents filed for the assignee):

goldMedal Norbert W Lenius (10 out of 13 patents)

silverMedal Jerry J Wierzba (9 out of 9 patents)

bronzeMedal Thomas H Feider (9 out of 11 patents)

4.  John E Braun (6 out of 7 patents)

5.  Gerald P Lamer (6 out of 6 patents)

6.  Timothy J Minkin (4 out of 4 patents)

7.  Edward Lazzeroni (4 out of 5 patents)

8.  Ronald Rhea Dir (4 out of 43 patents)

9.  Richard A Stearn (2 out of 4 patents)

10.  Robbie M Gunnlaugsson (1 out of 1 patent)

11.  Arnold Petersen (1 out of 1 patent)


23 patents:

1. 9302891 - Powered auxiliary hoist mechanism for a gantry crane (2016-04-05),
2. 8215441 - Steering system for crane (2012-07-10),
3. 7926671 - Powered auxiliary hoist mechanism (2011-04-19),
4. 7913864 - Panel turner for a gantry crane (2011-03-29),
5. 7798274 - Steering system for crane (2010-09-21),
6. 7546929 - Powered auxiliary hoist mechanism for a gantry crane (2009-06-16),
7. 7520362 - Steering system for crane (2009-04-21),
8. 7451883 - Panel turner for gantry crane (2008-11-18),
9. 7252299 - Steering system for crane (2007-08-07),
10. 6675719 - Railroad car wheel handler and method (2004-01-13),
11. 6193086 - Gantry crane with improved manually variable controls for movable components (2001-02-27),
12. 5810183 - Gantry crane with elevating operator cab (1998-09-22),
13. 5715958 - Stabilizer for a gantry crane lift frame (1998-02-10),
14. D381178 - Operator cab for a crane (1997-07-15),
15. D376244 - Control panel for crane operator cab (1996-12-03),
Company Overview
Marine Travelift, Inc. is a leading manufacturer specializing in the design and production of heavy-duty lifting equipment for the marine industry. Based in Sturgeon Bay, Wisconsin, the company focuses on developing innovative solutions such as boat hoists, transporters, and other marine handling equipment. With a commitment to quality and engineering excellence, Marine Travelift serves a global market, providing essential tools for boatyards and marinas to enhance operational efficiency and safety in marine environments.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

23 Patents

#2 in Sturgeon Bay, WI

#341 in Wisconsin

#14,450 in US

#27,736 in the World

Sturgeon Bay, WI (US)
Sturgeon Bay, WI, United States of America

Marine Travelift, Inc.

Forward Citations = 262

11 inventors:

goldMedal Norbert W Lenius (10 out of 13 patents)

silverMedal Jerry J Wierzba (9 out of 9 patents)

bronzeMedal Thomas H Feider (9 out of 11 patents)

4.  John E Braun (6 out of 7 patents)

5.  Gerald P Lamer (6 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Marine Travelift, Inc.. Retrieved from https://idiyas.com/company/marine-travelift

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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