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CIPO Patents = 2

Trademarks = 43

Forward Citations = 85

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8 inventors (with patents filed for the assignee):

Keith Allan Gere (3 out of 3 patents)

Jeff Traska (2 out of 2 patents)

Gregory A Korf (1 out of 1 patent)

4. Todd D Fritz (1 out of 1 patent)

5. Harry Hermanson (1 out of 1 patent)

6. Robert C Hultz (1 out of 6 patents)

7. David R Grussing (1 out of 1 patent)

8. Timothy L Hart (1 out of 1 patent)

8 patents: Sort by Forward Citations

1. 9719551 - Injection-molded roofing membrane plate (2017-08-01),

2. 9645062 - Roofing pull-test frame assembly (2017-05-09),

3. 8915284 - Method and apparatus for applying strips to surfaces (2014-12-23),

4. 8615862 - Roofing membrane puller and method of use (2013-12-31),

5. 7979968 - Roofing membrane puller and method of use (2011-07-19),

6. 7178306 - Single ply roofing systems and methods of constructing them (2007-02-20),

7. 5829214 - Methods of sealing roof drain pipes in single ply synthetic plastic roof (1998-11-03),

8. 5145617 - Method of processing scrap roof-membrane sheet material comprising a (1992-09-08),

Duro-Last, Inc. is a leading manufacturer of roofing systems for commercial and industrial buildings. With over 40 years of experience, Duro-Last is known for its durable, high-quality roofing products that are easy to install and maintain. The company's prefabricated roofing systems are custom-made to fit each building's unique specifications, reducing labor costs and saving time. Duro-Last is committed to sustainability and offers roofing solutions that are energy-efficient and environmentally friendly.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

8 Patents

#8 in Saginaw, MI

#1,209 in Michigan

#34,944 in US

Saginaw, MI, United States of America

Duro-Last, Inc.