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National Presto Industries, Inc. (NPK)

NYSE: NPK · Ordnance & Accessories, (No Vehicles/Guided Missiles) · Eau Claire, WI · filing with the SEC since 1994
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Patents

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

186 patents granted to the 3 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 National Presto Industries, Inc.’s names, not what it holds today.

Patents granted
186
118 design, 68 utility, 1976 to Dec 31, 2025
Granted in 2025
9
Against 10 in 2024 and 5 in 2023
Applications published
42
1 of them in 2025
Names they are printed under
3
its own name, 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
Furniture, games5
Food chemistry5
Electrical machinery, apparatus, energy2
Chemical engineering1
Measurement1
Thermal processes and apparatus1
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name3 counted
National Presto Industries, Inc. its own name
US, as the owner printed on each patent
186 granted
4 published
National Presto Industries, Inc. its own name
named as the applicant on its applications, in US
0 granted
37 published
Wilmington, Delaware a subsidiary
US, as the owner printed on each patent
0 granted
1 published
Newest grantseach row opens the USPTO’s own copy
GrantedPatentTitleFieldOwner as printed
Dec 16, 202512,498,141Tiltable radiant heaterThermal processes and apparatusNational Presto Industries, Inc.
Dec 9, 202512,490,859Stuffed waffle utensilFood chemistryNational Presto Industries, Inc.
Nov 18, 202512,471,736Rotisserie turkey deep fryerFurniture, gamesNational Presto Industries, Inc.
Sep 23, 2025D1,094,034Canning funnelNational Presto Industries, Inc.
Aug 19, 202512,396,066Heater control for countertop applianceElectrical machinery, apparatus, energyNational Presto Industries, Inc.
Jul 8, 2025D1,082,410Waffle maker with rotation provision for even cookingNational Presto Industries, Inc.
Jul 1, 2025D1,081,236Hot air corn popperNational Presto Industries, Inc.
Jun 17, 2025D1,079,409Combined spatula and pressNational Presto Industries, Inc.
Jun 3, 2025D1,077,562Flippable waffle makerNational Presto Industries, Inc.
Dec 24, 202412,172,882Canning funnel with headspace gaugeMeasurementNational Presto Industries, Inc.
Newest applications publishedan application is a clue, never a plan
PublishedApplicationTitleFieldOwner as printed
Apr 10, 20252025/0113941Waffle TongsFurniture, gamesNational Presto Industries, Inc.
Nov 21, 20242024/0382032COLD BREW COFFEE APPARATUSFurniture, gamesNational Presto Industries, Inc.
Nov 21, 20242024/0381906ELECTRIC PRESSURE CANNER WITH DIGITAL CONTROLFood chemistryNational Presto Industries, Inc.
Aug 29, 20242024/0284946SINGLE CHAMBER AIR POPPERFood chemistryNational Presto Industries, Inc.
Jul 18, 20242024/0244715HEATER CONTROL FOR COUNTERTOP APPLIANCEElectrical machinery, apparatus, energyNational Presto Industries, Inc. · patent 12,396,066 granted from it
May 2, 20242024/0140773CANNING FUNNEL WITH HEADSPACE GAUGEMeasurementNational Presto Industries, Inc. · patent 12,172,882 granted from it
Mar 9, 20232023/0074367JAR SENSORS FOR FOOD PRESERVATIONMeasurementNational Presto Industries, Inc.
Jan 26, 20232023/0028879Tiltable Radiant HeaterThermal processes and apparatusNational Presto Industries, Inc. · patent 12,498,141 granted from it
Jun 2, 20222022/0167776COLD BREW COFFEE APPARATUSFurniture, gamesNational Presto Industries, Inc. · patent 11,998,137 granted from it
Mar 10, 20222022/0071241ELECTRIC PRESSURE CANNER WITH DIGITAL CONTROLFood chemistryNational Presto Industries, Inc. · patent 12,011,021 granted from it
What it applied for, 2024 to 2025: Food chemistry 2 · Furniture, games 2 · Measurement 1 · Electrical machinery, apparatus, energy 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 NPK · research, not advice