Patent assignee · US · COMPANY

K&N Engineering, Inc.

156Patents
149Active
156Granted
60Portfolio score

Filing activity: Oct 31, 1997 → May 20, 2024 · 20 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
USD403414S Cylindrical pleated air filter with top and sidewall filtering areas General 45 Expired
USD690407S1 Air filter General 35 Active
USD806544S1 Cap cover General 34 Active
USD896139S1 Truck push bar General 33 Active
USD401684S Air Filter General 31 Expired
USD739513S1 Air filter General 28 Active
USD717933S1 Integrated filter and airbox General 28 Active
USD403416S Air filter with top filtering area and tapered sidewall filtering area General 19 Expired
USD401597S Shallow cylindrical air filter with top and side filtering areas General 17 Expired
USD401942S Filter cover General 15 Expired
USD533265S1 Air filter with a protruding inner filtering portion General 14 Expired
USD767112S1 Vent breather General 14 Active
US7452395B2 Air filter for a scoop Performing Operations; Transporting 13 Expired
USD777211S1 Oval air filter General 10 Active
USD667099S1 Air filter General 8 Active
USD933560S1 Truck running board General 8 Active
USD690408S1 Air filter General 8 Active
USD697191S1 Air filter General 7 Active
US9701178B2 Cabin air filter Performing Operations; Transporting 7 Active
USD740927S1 Top filter General 6 Active
US9587535B2 Drone elimination muffler Physics 6 Active
US10632411B2 HVAC home air filter Performing Operations; Transporting 6 Active
USD707564S1 Oil bottle General 6 Active
USD835767S1 Space optimizing air filter General 5 Active
US10316805B2 Aircharger air intake system and method Mechanical Engineering; Lighting; Heating 5 Active

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.