Trademarks = 3

Forward Citations = 14

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5 inventors (with patents filed for the assignee):

James R Edgar (2 out of 8 patents)

Myron G Rhodes (2 out of 2 patents)

Daniel R Szortyka (1 out of 1 patent)

4. William V Howard (1 out of 1 patent)

5. John M Gardner (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. D679732 - Spring retainer (2013-04-09),

2. 7836860 - Engine rocker arm (2010-11-23),

3. 5381765 - Valve spring retainer (1995-01-17),

4. 5343835 - Valve spring retainer (1994-09-06),

Charter Manufacturing Co., Inc. is a leading steel and iron production company located in the United States. With over 80 years of experience, they specialize in the manufacture of a wide range of high-quality products, including steel bars, rods, and castings. Charter Manufacturing is committed to providing innovative solutions and exceptional customer service to industries worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

4 Patents

#20 in Mequon, WI

#1,238 in Wisconsin

#59,046 in US

Mequon, WI, United States of America

Charter Manufacturing Co., Inc.