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You are here: Home / Beers / Patent No. 3946780A: Fermentation Container

Patent No. 3946780A: Fermentation Container

March 30, 2015 By Jay Brooks

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Today in 1976, US Patent 3946780 A was issued, an invention of John C. Sellers, for his “Fermentation Container.” Here’s the Abstract:

A flexible fermentation container which has, in place of the common air lock, a diaphragm having a Gurley porosity of 2 to 120 seconds. The diaphragm material, such as spun bonded polyethylene, allows fermentation gases to pass out of the container, but does not allow bacteria or other contaminants to enter.

US3946780-1

Filed Under: Beers, Breweries, Just For Fun, Politics & Law, Related Pleasures Tagged With: Brewing Equipment, History, Law, Patent



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