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CIPO Patents = 1

Trademarks = 10

Forward Citations = 10

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6 inventors (with patents filed for the assignee):

James W Welshimer (3 out of 5 patents)

Jeffrey Wigdahl (2 out of 2 patents)

Jonathan Smeltz (2 out of 2 patents)

4. Marcus E Powell (2 out of 2 patents)

5. Timothy D Birthisel (1 out of 24 patents)

6. Kenneth M Shaul (1 out of 1 patent)

7. Nadine C Dunn (2 patents)

8. David L Ashworth (1 patent)

9. Gerald L Gingrich (1 patent)

10. Peter V Cawlfield (1 patent)

11. Kim W Venable (1 patent)

12. Karissa L Fox (1 patent)

13. Paul Weinstein (0 patent)

7 patents: Sort by Forward Citations

1. 11905212 - Method of forming a non-dispersible granular substrate and the granular substrates formed thereby (2024-02-20),

2. 10577281 - Non-dispersible granular substrate (2020-03-03),

3. 10561118 - Method of forming a non-dispersible granular substrate and the granular substrates formed thereby (2020-02-18),

4. 10118860 - Method of making concrete (2018-11-06),

5. 9963389 - Concrete batch formulation and method of making concrete (2018-05-08),

6. 8821100 - Portable railcar unloading pit and method of using the same (2014-09-02),

7. 8404259 - Dispersible granular substrate for pesticide delivery (2013-03-26),

The National Lime and Stone Company is a leading supplier of crushed stone, sand, gravel, and mineral products in Ohio and beyond. With over 100 years of experience in the industry, we are committed to providing high-quality products and exceptional customer service to our clients. Our state-of-the-art facilities and expertise in mining and processing allow us to offer a wide range of products for various construction and industrial applications.

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USPTO Data Jan 1 1976 - Dec 16 2025

7 Patents

#12 in Findlay, OH

#1,515 in Ohio

#38,778 in US

Findlay, OH, United States of America

The National Lime and Stone Company