Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026
184 patents granted to the 18 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 Park-Ohio Holdings Corp.’s names, not what it holds today.
Patents granted
184
175 utility, 8 design, 1 reissue, 1976 to Dec 31, 2025
Granted in 2025
2
Against 4 in 2024 and 1 in 2023
Applications published
59
3 of them in 2025
Names they are printed under
18
a subsidiary, a former 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 elements4
Handling2
Transport1
Machine tools1
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name18 counted
Ajax Tocco Magnethermic Corporation a subsidiary
US, as the owner printed on each patent
30 publishedTocco, Inc. a subsidiary
US, as the owner printed on each patent
0 publishedPark-Ohio Industries a former name
US, as the owner printed on each patent
0 publishedFLUID ROUTING SOLUTIONS, LLC a subsidiary
US, as the owner printed on each patent
4 publishedRB&W MANUFACTURING LLC a subsidiary
US, as the owner printed on each patent
3 publishedRB&W MANUFACTURING LLC a subsidiary
named as the applicant on its applications, in US
10 publishedR B & W Corporation a subsidiary
US, as the owner printed on each patent
0 publishedGH Electrotermia, S.A. a subsidiary
named as the applicant on its applications, in ES
3 publishedGH Induction Atmospheres LLC a subsidiary
named as the applicant on its applications, in US
3 publishedThe Ajax Manufacturing Co. a subsidiary
US, as the owner printed on each patent
0 publishedWind Energy Corporation a subsidiary
US, as the owner printed on each patent. 1 more under the same name are not counted (printed in TW)
2 publishedGH Electrotermia, S.A. a subsidiary
ES, as the owner printed on each patent
0 publishedTocco, Inc., a corporation of the state of Alabama a subsidiary
US, as the owner printed on each patent
2 publishedAjax Tocco Magnethermic Corporation a subsidiary
named as the applicant on its applications, in US
1 publishedAutoform Tool & Manufacturing, Inc. a subsidiary
US, as the owner printed on each patent
0 publishedSAET S.P.A. a subsidiary
IT, as the owner printed on each patent
1 publishedSaet a subsidiary
IT, as the owner printed on each patent
0 publishedSnow Dragon LLC a subsidiary
US, as the owner printed on each patent
0 publishedNames not counted (3)
Apollo Group Limited
Most of its patents print US; this name counts in GB. 0 granted and 28 published under it are not counted.
EFCO, Inc.
Also listed as a subsidiary by APOGEE ENTERPRISES, INC.. 8 granted and 1 published under it are not counted.
GH Induction Deutschland Gmbh
No country is printed for it. 0 granted and 1 published under it are not counted.
Newest grantseach row opens the USPTO’s own copy
| Granted | Patent | Title | Field | Owner as printed |
|---|
| Jun 24, 2025 | 12,338,501 | Continuous intensive quenching apparatus | Handling | Ajax Tocco Magnethermic Corporation |
| Feb 11, 2025 | 12,220,778 | Two-stage device and methods for installing a self-clinching fastener | Machine tools | RB&W MANUFACTURING LLC |
| Dec 10, 2024 | 12,163,548 | Self-clinching fastener | Mechanical elements | RB&W MANUFACTURING LLC |
| Jul 9, 2024 | 12,031,189 | Continuous intensive quenching apparatus | Handling | Ajax Tocco Magnethermic Corporation |
| Apr 2, 2024 | 11,945,299 | Two-piece fuel filler tube assembly bracket | Transport | FLUID ROUTING SOLUTIONS, LLC |
| Feb 27, 2024 | 11,913,488 | Self-clinching and self-piercing construction element with multi-purpose pilot | Mechanical elements | RB&W MANUFACTURING LLC |
| Oct 3, 2023 | 11,773,894 | Self-clinching fastener | Mechanical elements | RB&W MANUFACTURING LLC |
| Dec 28, 2021 | 11,209,040 | Self-clinching fastener | Mechanical elements | RB&W MANUFACTURING LLC |
| Sep 8, 2020 | 10,767,607 | Filter assembly for a fresh air filtration system, fresh air filtration system made therewith, and method of filtering fresh air | Environmental technology | FLUID ROUTING SOLUTIONS, LLC |
| Jun 30, 2020 | 10,697,484 | Method for installing a self-piercing and self-clinching fastener | Mechanical elements | RB&W MANUFACTURING LLC |
Newest applications publishedan application is a clue, never a plan
| Published | Application | Title | Field | Owner as printed |
|---|
| Jun 12, 2025 | 2025/0188981 | SELF-CLINCHING CONSTRUCTION ELEMENT WITH IMPROVED SEALING PERFORMANCE | Mechanical elements | RB&W MANUFACTURING LLC |
| May 8, 2025 | 2025/0151177 | INDUCTION SLAB HEATER USING PWM ZONE HEATING CONTROL WITH SELECTABLE INDUCTION FREQUENCY | Electrical machinery, apparatus, energy | Ajax Tocco Magnethermic Corporation |
| Feb 20, 2025 | 2025/0063639 | FLEXIBLE CONDUCTOR CHANNEL COIL FOR INDUCTION HEATING | Electrical machinery, apparatus, energy | Ajax Tocco Magnethermic Corporation |
| Sep 5, 2024 | 2024/0293900 | TWO-STAGE DEVICE AND METHODS FOR INSTALLING A SELF-CLINCHING FASTENER | Machine tools | RB&W MANUFACTURING LLC · patent 12,220,778 granted from it |
| Jun 20, 2024 | 2024/0198788 | EXPANDED FUEL FILL PIPE AND METHOD OF MAKING SAME | Machine tools | FLUID ROUTING SOLUTIONS, LLC |
| May 23, 2024 | 2024/0172335 | ACTIVE RECTIFIER WITH CURRENT SOURCE INVERTER AND VOLTAGE SOURCE INVERTER POWER SYSTEMS FOR INDUCTION HEATING AND MELTING APPLICATIONS | Electrical machinery, apparatus, energy | Ajax Tocco Magnethermic Corporation |
| Mar 14, 2024 | 2024/0084842 | SELF-CLINCHING AND SELF-PIERCING CONSTRUCTION ELEMENT WITH MULTI-PURPOSE PILOT | Mechanical elements | RB&W MANUFACTURING LLC |
| Feb 29, 2024 | 2024/0068500 | SELF-CLINCHING FASTENER | Mechanical elements | RB&W MANUFACTURING LLC · patent 12,163,548 granted from it |
| Nov 23, 2023 | 2023/0374619 | CONTINUOUS INTENSIVE QUENCHING APPARATUS | Handling | Ajax Tocco Magnethermic Corporation · patent 12,338,501 granted from it |
| Jul 20, 2023 | 2023/0232506 | TRANSVERSE FLUX INDUCTION HEATING DEVICE FOR HEATING FLAT PRODUCT | Electrical machinery, apparatus, energy | Ajax Tocco Magnethermic Corporation |
What it applied for, 2024 to 2025: Mechanical elements 3 · Electrical machinery, apparatus, energy 3 · Machine tools 2.
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.