Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Air filter

Air filter

US Patent 4235611 · Granted Nov 25, 1980

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Method for on-line parts ordering2014
Method and system for customization by sale of component parts and accessories2013
Method for on-line parts ordering2012
Method for on-line parts ordering2008
Composite sandwich element1996
Method of applying a wettant to a filtering media1992
Liquid filter of spiral wound construction with alternate layers of a surface ar1989
Liquid filter with a distorting portion for transmitting hydraulic forces1989
Liquid filter1989
Pleated filter element and integral shield and method for making same1984