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USPTO Patent Rankings Data through Dec 31, 2025
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John L. Sigmund — 10 Patents

CECertainteed: 7 patents #64 of 431Top 15%
MMMilgard Manufacturing: 1 patents #30 of 50Top 60%
Maumee, OH: #37 of 420 inventorsTop 9%
Ohio: #8,096 of 73,341 inventorsTop 15%
Overall (All Time): #481,000 of 4,157,543Top 15%
10 Patents All Time
John L. Sigmund has been granted 10 US patents while listed as an inventor at Certainteed. The first was granted in 2005 and the most recent in January 2013. John L. Sigmund ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list John L. Sigmund in Maumee, OH, US.

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
8353138 Window frame with hidden weep Melvin Saunders, Eric A. Baczuk 2013-01-15
8028475 Highly ventilated soffit with obscured ventilation openings Thomas Gilbert 2011-10-04
7597771 Pultrusion method and related article Robert D. Spaans, Jacob J. Huskins, Robert W. Jennings 2009-10-06
7594362 Highly ventilated soffit with obscured ventilation openings Thomas Gilbert 2009-09-29
7518060 Prefabricated structural member having a wire routing system Jeffery V. Miller, Jacob J. Huskins, Robert D. Spaans 2009-04-14
D561915 Soffit panel with short holes 2008-02-12
D529626 Vent for a soffit panel with side openings 2006-10-03
D523967 Vent for a soffit panel with top openings 2006-06-27
D515708 Vent for a soffit panel with short top holes 2006-02-21
6941707 Vented soffit panel 2005-09-13