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Knowles Corporation (KN)

NYSE: KN · Household Audio & Video Equipment · Itasca, IL · filing with the SEC since 2013
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Grade7.1
◀ Past 7.5● Present 7.6▶ Future 6.0
1 est.
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Patents

US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026

560 patents granted to the 15 names below, as the owner printed on each patent when it was granted. A later sale, a lapse or an expiry is not read, so this is what was granted to Knowles Corporation’s names, not what it holds today.

Patents granted
560
553 utility, 6 design, 1 reissue, 1976 to Dec 31, 2025
Granted in 2025
23
Against 27 in 2024 and 56 in 2023
Applications published
540
13 of them in 2025
Names they are printed under
15
a subsidiary
By yearGrantedApplications published
'11'12'13'14'15'16'17'18'19'20'21'22'23'24'25
Each pair is one calendar year. Applications are published about eighteen months after filing, so the newest years read low.
What they are aboutgrants since 2021
Audio-visual technology150
Electrical machinery, apparatus, energy12
Basic communication processes10
Computer technology9
Telecommunications9
Micro-structural and nano-technology6
Semiconductors3
Measurement3
Other consumer goods1
Medical technology1
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name15 counted
Knowles Electronics, LLC a subsidiary
US, as the owner printed on each patent. 5 more under the same name are not counted (printed in GB, printed in AU)
495 granted
225 published
Knowles Electronics, LLC a subsidiary
named as the applicant on its applications, in US. 5 more under the same name are not counted (printed in IL)
0 granted
264 published
Knowles Cazenovia, Inc. a subsidiary
US, as the owner printed on each patent
19 granted
13 published
Sensor Platforms, Inc. a subsidiary
US, as the owner printed on each patent
16 granted
4 published
Knowles IPC (M) Sdn. Bhd. a subsidiary
named as the applicant on its applications, in MY
0 granted
12 published
Cornell Dubilier Marketing, Inc. a subsidiary
US, as the owner printed on each patent
9 granted
2 published
Knowles IPC (M) SDN. BHD. a subsidiary
MY, as the owner printed on each patent
8 granted
2 published
Knowles Cazenovia, Inc. a subsidiary
named as the applicant on its applications, in US
0 granted
7 published
Knowles (UK) Ltd. a subsidiary
GB, as the owner printed on each patent
5 granted
1 published
Integrated Microwave Corporation a subsidiary
US, as the owner printed on each patent
4 granted
1 published
Integrated Microwave Corporation a subsidiary
named as the applicant on its applications, in US
0 granted
4 published
Cornell Dubilier, LLC a subsidiary
US, as the owner printed on each patent
3 granted
0 published
Knowles (UK) Ltd. a subsidiary
named as the applicant on its applications, in GB
0 granted
3 published
Sensor Platforms, Inc. a subsidiary
named as the applicant on its applications, in US
0 granted
2 published
Novacap, Inc. a subsidiary
US, as the owner printed on each patent
1 granted
0 published
Names not counted (2)
Knowles Corp
Most of its patents print CH; this name counts in US. 0 granted and 1 published under it are not counted.
Knowles Corp
Most of its patents print CH; this name counts in US. 0 granted and 1 published under it are not counted.
Newest grantseach row opens the USPTO’s own copy
GrantedPatentTitleFieldOwner as printed
Dec 30, 202512,512,575RF devices and methods thereof involving a vertical switched filter bankAudio-visual technologyKnowles Cazenovia, Inc.
Dec 30, 202512,509,344Microelectromechanical systems dieMicro-structural and nano-technologyKnowles Electronics, LLC
Dec 16, 202512,497,283MEMS die and MEMS-based sensorAudio-visual technologyKnowles Electronics, LLC
Nov 4, 202512,464,272Micro-speaker for ear-worn hearing deviceAudio-visual technologyKnowles Electronics, LLC
Oct 28, 202512,456,788Surface mount radio frequency crossover deviceAudio-visual technologyKnowles Cazenovia, Inc.
Oct 28, 202512,456,562Ceramic RF feedthrough componentElectrical machinery, apparatus, energyIntegrated Microwave Corporation
Sep 30, 202512,431,627Millimeter wave filter arrayTelecommunicationsKnowles Cazenovia, Inc.
Sep 30, 202512,431,601Printed microstrip filterTelecommunicationsKnowles Cazenovia, Inc.
Jul 8, 202512,356,167Dual-diaphragm MEMS transducers with high effective areaAudio-visual technologyKnowles Electronics, LLC
Jul 8, 202512,355,197Ear-worn hearing device with electrical connectorElectrical machinery, apparatus, energyKnowles Electronics, LLC
Newest applications publishedan application is a clue, never a plan
PublishedApplicationTitleFieldOwner as printed
Dec 11, 20252025/0380096EAR-WORN HEARING DEVICE WITH ELECTRICAL CONNECTORElectrical machinery, apparatus, energyKnowles Electronics, LLC
Sep 18, 20252025/0294289Multicoil Balanced Armature ReceiverAudio-visual technologyKnowles Electronics, LLC
Sep 18, 20252025/0294280Hearing Device with Multicoil Balanced Armature ReceiverAudio-visual technologyKnowles Electronics, LLC
Sep 11, 20252025/0285787CERAMIC RF FEEDTHROUGH COMPONENTElectrical machinery, apparatus, energyIntegrated Microwave Corporation
Jul 31, 20252025/0247640ADAPTERS FOR MICROPHONES AND COMBINATIONS THEREOFAudio-visual technologyKnowles Electronics, LLC
Jul 31, 20252025/0246342CERAMIC RF FEEDTHROUGH COMPONENTElectrical machinery, apparatus, energyIntegrated Microwave Corporation · patent 12,456,562 granted from it
Jul 3, 20252025/0220367EAR-WORN HEARING DEVICE WITH ELECTRICAL CABLE ASSEMBLY OR SOUND TUBEAudio-visual technologyKnowles Electronics, LLC
Jul 3, 20252025/0220332HEARING DEVICE COMPONENT WITH ELECTRICAL CABLE OR SOUND TUBEAudio-visual technologyKnowles Electronics, LLC
Jun 12, 20252025/0193563Micro-Speaker for Ear-Worn Hearing DeviceAudio-visual technologyKnowles Electronics, LLC · patent 12,464,272 granted from it
May 1, 20252025/0136433MEMS DIE AND MEMS-BASED SENSORMicro-structural and nano-technologyKnowles Electronics, LLC
What it applied for, 2024 to 2025: Audio-visual technology 25 · Micro-structural and nano-technology 6 · Electrical machinery, apparatus, energy 6 · Basic communication processes 1.

A patent is counted where the owner printed on it when it was granted carries the company’s own name, a former name, the name of a subsidiary its annual report lists, or its own name with a patent-holding phrase (Technology Licensing, Intellectual Property and the like), once the legal form, case and punctuation are set aside, and prints a country that name counts in. PatentsView’s data are published under the Creative Commons Attribution 4.0 licence. Source: PatentsView's granted patents and pre-grant publications, disambiguated, from the USPTO's Open Data Portal, through Dec 31, 2025, read Oct 27, 2026.

SI Assistanton KN · research, not advice