K&N Engineering, Inc.

#1 | 2026-05-14

US20260134722A1

Physics

Pass-Through OBD-II Diagnostic Interface

#2 | 2025-08-21

US20250264064A1

Mechanical engineering

Throttle Control System

#3 | 2025-07-31

US20250242284A1

Performing operations; transporting

SYSTEM AND METHODS FOR A FILTER WASHING STATION

#4 | 2025-07-24

US20250235817A1

Performing operations; transporting

HVAC System Air Filter

#5 | 2025-07-03

US20250214015A1

Performing operations; transporting

AIR FILTER PRECLEANER

#6 | 2025-06-19

US20250196044A1

Performing operations; transporting

AIR FILTER SYSTEM FOR DETECTING DIFFERENTIAL OPTICAL PROPERTIES TO INDICATE A NEED FOR SERVICING

#7 | 2025-06-19

US20250196043A1

Performing operations; transporting

AIR FILTER SYSTEM FOR DETECTING DIFFERENTIAL ELECTRICAL PROPERTIES TO INDICATE A NEED FOR SERVICING

#8 | 2025-06-19

US20250196042A1

Performing operations; transporting

AIR FILTER VIBRATION DIFFERENCES TO INDICATE CONTAMINANT BUILDUP

#9 | 2025-06-12

US20250189154A1

Mechanical engineering

AIR FILTER SYSTEM FOR DETECTING MECHANICAL STRAIN TO INDICATE A NEED FOR SERVICING

#10 | 2025-06-12 ✅ Patent 12,589,570 granted on 2026-03-31

US20250187290A1

Performing operations; transporting

Pleated Filter Preparation System

#11 | 2025-06-12

US20250186926A1

Performing operations; transporting

AIR FILTER SYSTEM FOR DETECTING A TEMPERATURE DIFFERENTIAL TO INDICATE A NEED FOR SERVICING

#12 | 2025-06-12

US20250186925A1

Performing operations; transporting

Air Filter Pressure Differences To Indicate Contaminant Buildup

#13 | 2025-05-29

US20250172349A1

Mechanical engineering

Modular Intercooler Block

#14 | 2025-05-29

US20250172100A1

Mechanical engineering

THROTTLE CONTROLLED INTAKE SYSTEM

#15 | 2025-05-08

US20250144555A1

Performing operations; transporting

REUSABLE AIR FILTER SYSTEM AND METHOD

#16 | 2025-04-17

US20250122856A1

Mechanical engineering

ELECTRONIC CARBURETOR INJECTION

#17 | 2025-04-17

US20250121310A1

Performing operations; transporting

Compound Air Filter

#18 | 2025-02-27

US20250067235A1

Mechanical engineering

Mass Airflow Sensor And Hydrocarbon Trap Combination

#19 | 2025-02-27

US20250067234A1

Mechanical engineering

Air Filter For Turbochargers And Superchargers

#20 | 2025-02-06

US20250045556A1

Physics

Pleat Counter

#21 | 2025-02-06

US20250043742A1

Mechanical engineering

Turbo-Boost Control System

#22 | 2025-01-02

US20250001341A1

Performing operations; transporting

MAGNETIC COVER FOR AIR FILTER BOX

#23 | 2024-12-19

US20240418111A1

Mechanical engineering

SOUND ATTENUATING ENGINE EXHAUST SYSTEM

#24 | 2024-11-28

US20240390832A1

Performing operations; transporting

AIR FILTER WITH FILTERED CAP

#25 | 2024-09-19 ✅ Patent 12,404,826 granted on 2025-09-02

US20240309834A1

Mechanical engineering

Turbo-Boost Controlled Intake System

#26 | 2024-09-19

US20240309785A1

Mechanical engineering

CATCH CAN OIL FILTER

#27 | 2024-08-22

US20240278160A1

Performing operations; transporting

BLACK AIR FILTER OIL COMPOSITION

#28 | 2024-08-01 ✅ Patent 12,405,620 granted on 2025-09-02

US20240255971A1

Physics

Portable Mass Airflow Training Module

#29 | 2024-08-01

US20240254952A1

Mechanical engineering

THROTTLE BODY SPACER

#30 | 2024-07-25 ✅ Patent 12,571,362 granted on 2026-03-10

US20240247620A1

Mechanical engineering

BOTTOM FEED FUEL BOWL

#31 | 2024-06-27

US20240209818A1

Mechanical engineering

FILTER OIL FORMULATION

#32 | 2024-06-27 ✅ Patent 12,345,221 granted on 2025-07-01

US20240209817A1

Mechanical engineering

CURVED BASE AIR FILTER

#33 | 2024-06-27

US20240207768A1

Performing operations; transporting

Flangeless Air Filter

#34 | 2024-05-02 ✅ Patent 12,268,988 granted on 2025-04-08

US20240139674A1

Performing operations; transporting

HVAC system air filter

#35 | 2024-03-14

US20240082773A1

Performing operations; transporting

CONE AIR FILTER

#36 | 2024-02-22

US20240060463A1

Mechanical engineering

PRO STOCK FUEL INJECTION AIR INTAKE ASSEMBLY

#37 | 2023-12-28 ✅ Patent 12,209,543 granted on 2025-01-28

US20230417200A1

Mechanical engineering

Throttle controlled intake system

#38 | 2023-12-28

US20230415084A1

Performing operations; transporting

BLACK AIR FILTER OIL COMPOSITION

#39 | 2023-12-14 ✅ Patent 12,350,619 granted on 2025-07-08

US20230398485A1

Performing operations; transporting

HYDROCARBON ABSORBING AIR FILTER BOX

#40 | 2023-11-16 ✅ Patent 12,503,991 granted on 2025-12-23

US20230366368A1

Mechanical engineering

Filter Oil Formulation

#41 | 2023-11-16 ✅ Patent 12,006,898 granted on 2024-06-11

US20230366367A1

Mechanical engineering

Aircharger air intake system and method

#42 | 2023-11-16 ✅ Patent 12,257,538 granted on 2025-03-25

US20230364543A1

Performing operations; transporting

Air filter precleaner

#43 | 2023-09-28

US20230304425A1

Mechanical engineering

DRONE ELIMINATION MUFFLER

#44 | 2023-09-07

US20230280068A1

Mechanical engineering

FOUNDATION VENT COVER

#45 | 2023-09-07

US20230279794A1

Mechanical engineering

HIGH CAPACITY OIL FILTER

#46 | 2023-09-07 ✅ Patent 12,103,264 granted on 2024-10-01

US20230278308A1

Performing operations; transporting

Pleated filter preparation system

#47 | 2023-08-24 ✅ Patent 12,129,806 granted on 2024-10-29

US20230265804A1

Mechanical engineering

Turbo-boost control system

#48 | 2023-07-06

US20230213008A1

Mechanical engineering

HIGH PERFORMANCE AIR INTAKE SYSTEM

#49 | 2023-07-06 ✅ Patent 11,927,158 granted on 2024-03-12

US20230213007A1

Mechanical engineering

Curved base air filter

#50 | 2023-06-15 ✅ Patent 12,098,694 granted on 2024-09-24

US20230184200A1

Mechanical engineering

Throttle body spacer

#51 | 2023-06-01 ✅ Patent 11,994,092 granted on 2024-05-28

US20230167790A1

Mechanical engineering

Turbo-boost controlled intake system

#52 | 2023-06-01

US20230166583A1

Performing operations; transporting

COLORED AIR FILTER MEDIUM

#53 | 2023-05-18

US20230150354A1

Performing operations; transporting

MULTIPLE INLET FILTRATION SYSTEM

#54 | 2023-05-04

US20230132684A1

Performing operations; transporting

WING STABILIZER CHARGING SYSTEM

#55 | 2023-04-20

US20230123016A1

Mechanical engineering

SUPER-PLEATED VEHICLE AIR FILTER

#56 | 2023-04-13 ✅ Patent 12,140,111 granted on 2024-11-12

US20230110960A1

Chemistry; metallurgy

Mass airflow sensor and hydrocarbon trap combination

#57 | 2023-03-16

US20230082896A1

Mechanical engineering

ENGINE CONTROL UNIT COOLING AIR BOX

#58 | 2023-03-16 ✅ Patent 12,066,356 granted on 2024-08-20

US20230082759A1

Physics

Oil filter-leak pressure-test station

#59 | 2023-02-09 ✅ Patent 11,872,511 granted on 2024-01-16

US20230045362A1

Performing operations; transporting

Flangeless air filter

#60 | 2022-11-24

US20220372939A1

Mechanical engineering

Filter Oil Formulation

#61 | 2022-11-24 ✅ Patent 11,992,798 granted on 2024-05-28

US20220370943A1

Performing operations; transporting

HVAC home air filter

#62 | 2022-10-20

US20220331731A1

Performing operations; transporting

REUSABLE AIR FILTER SYSTEM AND METHOD

#63 | 2022-10-06

US20220314151A1

Performing operations; transporting

MULTI-PANEL AIR FILTER

#64 | 2022-09-22 ✅ Patent 11,994,050 granted on 2024-05-28

US20220298939A1

Mechanical engineering

Catch can oil filter

#65 | 2022-09-22

US20220297047A1

Performing operations; transporting

HVAC Home Air Filter

#66 | 2022-09-15 ✅ Patent 11,808,241 granted on 2023-11-07

US20220290639A1

Mechanical engineering

Aircharger air intake system and method

#67 | 2022-09-01

US20220274043A1

Performing operations; transporting

AIR FILTER

#68 | 2022-08-04

US20220243689A1

Mechanical engineering

AIR BOX WITH INTEGRATED FILTER MEDIA

#69 | 2022-06-23 ✅ Patent 11,608,802 granted on 2023-03-21

US20220195971A1

Mechanical engineering

Curved base air cleaner

#70 | 2022-06-16 ✅ Patent 12,147,871 granted on 2024-11-19

US20220188593A1

Physics

Pleat counter

#71 | 2022-05-19 ✅ Patent 11,865,484 granted on 2024-01-09

US20220152542A1

Performing operations; transporting

HVAC home air filter

#72 | 2022-05-19

US20220152539A1

Performing operations; transporting

AIR FILTER

#73 | 2022-04-28 ✅ Patent 11,946,440 granted on 2024-04-02

US20220128017A1

Mechanical engineering

Bottom feed fuel bowl

#74 | 2022-04-21 ✅ Patent 11,826,687 granted on 2023-11-28

US20220118390A1

Performing operations; transporting

Cone air filter

#75 | 2022-03-10 ✅ Patent 11,773,794 granted on 2023-10-03

US20220074359A1

Mechanical engineering

Throttle controlled intake system

#76 | 2022-02-17

US20220047988A1

Performing operations; transporting

HVAC SYSTEM AIR FILTER

#77 | 2022-02-10 ✅ Patent 11,565,584 granted on 2023-01-31

US20220041050A1

Performing operations; transporting

Multiple inlet filtration system

#78 | 2022-01-27 ✅ Patent 11,960,309 granted on 2024-04-16

US20220026933A1

Physics

Portable mass airflow training module

#79 | 2022-01-13 ✅ Patent 12,142,089 granted on 2024-11-12

US20220012956A1

Physics

Pass-through OBD-II diagnostic interface

#80 | 2022-01-06 ✅ Patent 11,660,834 granted on 2023-05-30

US20220001640A1

Performing operations; transporting

Pleated filter preparation system

#81 | 2021-12-30

US20210408614A1

Electricity

PORTABLE VEHICLE BATTERY PACK

#82 | 2021-11-25 ✅ Patent 12,152,556 granted on 2024-11-26

US20210363946A1

Mechanical engineering

Air filter for turbochargers and superchargers

#83 | 2021-11-11 ✅ Patent 11,649,776 granted on 2023-05-16

US20210348571A1

Mechanical engineering

Turbo-boost control system

#84 | 2021-11-04 ✅ Patent 11,598,296 granted on 2023-03-07

US20210340941A1

Mechanical engineering

Throttle body spacer

#85 | 2021-09-16

US20210283633A1

Performing operations; transporting

SPRAYER NOZZLE SUPPORT

#86 | 2021-08-26 ✅ Patent 11,724,226 granted on 2023-08-15

US20210260514A1

Performing operations; transporting

Air filter precleaner

#87 | 2021-08-12

US20210246856A1

Mechanical engineering

AIR VELOCITY APPARATUS AND SYSTEM

#88 | 2021-07-29 ✅ Patent 12,071,874 granted on 2024-08-27

US20210231035A1

Mechanical engineering

Sound attenuating engine exhaust system

#89 | 2021-06-17

US20210180547A1

Mechanical engineering

SPACE OPTIMIZING AIR FILTER

#90 | 2021-02-11

US20210040923A1

Mechanical engineering

AIR FILTER CLEANING WAND

#91 | 2021-01-28 ✅ Patent 11,549,469 granted on 2023-01-10

US20210025357A1

Mechanical engineering

Turbo-boost controlled intake system

#92 | 2021-01-28 ✅ Patent 11,181,055 granted on 2021-11-23

US20210025343A1

Mechanical engineering

Throttle controlled intake system

#93 | 2021-01-21 ✅ Patent 11,346,310 granted on 2022-05-31

US20210017938A1

Mechanical engineering

Aircharger air intake system and method

#94 | 2020-12-31

US20200412161A1

Electricity

SIDE MIRROR WIND TURBINE

#95 | 2020-12-31 ✅ Patent 11,548,394 granted on 2023-01-10

US20200406760A1

Performing operations; transporting

Wing stabilizer charging system

#96 | 2020-12-24

US20200398677A1

Performing operations; transporting

WIND SCOOP CHARGING SYSTEM

#97 | 2020-12-10

US20200386207A1

Mechanical engineering

FAIRING PANEL CHARGING SYSTEM

#98 | 2020-11-12 ✅ Patent 11,478,739 granted on 2022-10-25

US20200353395A1

Performing operations; transporting

Flangeless air filter

#99 | 2020-10-08 ✅ Patent 11,603,813 granted on 2023-03-14

US20200318587A1

Mechanical engineering

High performance air intake system

#100 | 2020-10-08 ✅ Patent 12,128,341 granted on 2024-10-29

US20200316511A1

Performing operations; transporting

Compound air filter and method of removal of contaminants