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Mueller Industries, Inc. (MLI)

NYSE: MLI · Rolling Drawing & Extruding of Nonferrous Metals · Collierville, TN · filing with the SEC since 1994
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Grade7.7
◀ Past 7.4● Present 8.2▶ Future 7.2
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Patents

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

617 patents granted to the 20 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 Mueller Industries, Inc.’s names, not what it holds today.

Patents granted
617
600 utility, 14 design, 3 reissue, 1976 to Dec 31, 2025
Granted in 2025
none
Against 3 in 2024 and 4 in 2023
Applications published
82
2 of them in 2025
Names they are printed under
20
a subsidiary, its own name
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
Mechanical elements7
Materials, metallurgy2
Machine tools1
Chemical engineering1
Thermal processes and apparatus1
Measurement1
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name20 counted
Tecumseh Products Company a subsidiary
US, as the owner printed on each patent
557 granted
38 published
Mueller Industries, Inc. its own name
US, as the owner printed on each patent
26 granted
11 published
JUNGWOO METAL IND. CO., LTD. a subsidiary
KR, as the owner printed on each patent
10 granted
5 published
MUELLER REFRIGERATION, LLC a subsidiary
US, as the owner printed on each patent
3 granted
5 published
Elkhart Products Corporation a subsidiary
US, as the owner printed on each patent. 3 more under the same name are not counted (printed in NL)
6 granted
0 published
Turbotec Products, Inc. a subsidiary
US, as the owner printed on each patent
3 granted
3 published
Mueller Industries, Inc. its own name
named as the applicant on its applications, in US
0 granted
5 published
Tecumseh Products Company, Inc. a subsidiary
named as the applicant on its applications, in US
0 granted
4 published
Atco Rubber Products, Inc. a subsidiary
US, as the owner printed on each patent
3 granted
0 published
JUNGWOO METAL IND. CO., LTD. a subsidiary
named as the applicant on its applications, in KR
0 granted
3 published
Westermeyer Industries Inc. a subsidiary
US, as the owner printed on each patent
2 granted
1 published
Westermeyer Industries Inc. a subsidiary
named as the applicant on its applications, in US
0 granted
3 published
Elkhart Products Corporation a subsidiary
named as the applicant on its applications, in US
0 granted
2 published
Sherwood Valve, LLC a subsidiary
US, as the owner printed on each patent
1 granted
1 published
Summit Systems, Inc. a subsidiary
US, as the owner printed on each patent
2 granted
0 published
Extruded Metals a subsidiary
US, as the owner printed on each patent
1 granted
0 published
Great Lakes Copper Inc. a subsidiary
CA, as the owner printed on each patent
1 granted
0 published
Mueller Refrigeration Products Co., Inc. a subsidiary
US, as the owner printed on each patent
1 granted
0 published
The Mosack Group, Inc. a subsidiary
US, as the owner printed on each patent
1 granted
0 published
The Mosack Group, Inc. a subsidiary
named as the applicant on its applications, in US
0 granted
1 published
Names not counted (3)
Micro Gauge, Inc.
Most of its patents print CH; this name counts in US. 1 granted and 0 published under it are not counted.
Micro Gauge, Inc.
Most of its patents print CH; this name counts in US. 0 granted and 1 published under it are not counted.
B & K Industries, Inc.
Only generic words.
Newest grantseach row opens the USPTO’s own copy
GrantedPatentTitleFieldOwner as printed
Oct 8, 202412,110,666Adjustable anti-freeze faucetMechanical elementsThe Mosack Group, Inc.
Sep 24, 202412,098,966Differential pressure monitor with a calibration process and systemMeasurementWestermeyer Industries Inc.
May 14, 202411,982,380Sealing member for connecting pipesMechanical elementsJUNGWOO METAL IND. CO., LTD.
Dec 19, 202311,846,375Push-fittingMechanical elementsMueller Industries, Inc.
Aug 8, 202311,719,349Axial three-way modulating valveThermal processes and apparatusMUELLER REFRIGERATION, LLC
Jun 6, 202311,666,839Oil filtration assembly, system, and methods of making and using the sameChemical engineeringWestermeyer Industries Inc.
Mar 28, 202311,614,177Seal arrangement and check valve including sameMechanical elementsMUELLER REFRIGERATION, LLC
Dec 6, 202211,519,532Fitting apparatus for connecting pipesMechanical elementsJUNGWOO METAL IND. CO., LTD.
Oct 4, 202211,459,639Powder metallurgy process for making lead free brass alloysMaterials, metallurgyMueller Industries, Inc.
Sep 13, 202211,440,094Powder metallurgy process for making lead free brass alloysMaterials, metallurgyMueller Industries, Inc.
Newest applications publishedan application is a clue, never a plan
PublishedApplicationTitleFieldOwner as printed
Dec 11, 20252025/0376982ROLLING PISTON ROTARY COMPRESSOREngines, pumps, turbinesTecumseh Products Company, Inc.
Nov 20, 20252025/0354852Sensor With Fiber Optic Liquid Level Switch, Assembly, and Methods of Making and Using the SameMeasurementWestermeyer Industries Inc.
Feb 1, 20242024/0035603INSERT TYPE PIPE CONNECTING DEVICEMechanical elementsJUNGWOO METAL IND. CO., LTD.
Dec 21, 20232023/0407976AXIAL THREE-WAY MODULATING VALVEThermal processes and apparatusMUELLER REFRIGERATION, LLC
Nov 16, 20232023/0366495Push-FittingMechanical elementsMueller Industries, Inc. · patent 11,846,375 granted from it
May 18, 20232023/0151894AXIAL THREE-WAY MODULATING VALVEThermal processes and apparatusMUELLER REFRIGERATION, LLC · patent 11,719,349 granted from it
Feb 16, 20232023/0047890SEAL ARRANGEMENT AND CHECK VALVE INCLUDING SAMEMechanical elementsMUELLER REFRIGERATION, LLC · patent 11,614,177 granted from it
Sep 15, 20222022/0290886Filter Monitoring Device, Air Flow System and Corresponding MethodsEnvironmental technologyWestermeyer Industries Inc.
May 19, 20222022/0155170Differential Pressure Monitor, and Corresponding Systems and MethodsMeasurementWestermeyer Industries Inc. · patent 12,098,966 granted from it
Dec 23, 20212021/0396335SEALING MEMBER FOR CONNECTING PIPESMechanical elementsJUNGWOO METAL IND. CO., LTD. · patent 11,982,380 granted from it
What it applied for, 2024 to 2025: Mechanical elements 1 · Measurement 1 · Engines, pumps, turbines 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 MLI · research, not advice