Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026
34 patents granted to the 10 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 Compass Minerals International, Inc.’s names, not what it holds today.
Patents granted
34
34 utility, 1976 to Dec 31, 2025
Granted in 2025
2
Against 6 in 2024 and 7 in 2023
Applications published
45
2 of them in 2025
Names they are printed under
10
a subsidiary, a former name
By yearGrantedApplications published
'09'10'11'12'13'15'16'18'19'20'21'22'23'24'25
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
Machine tools22
Basic materials chemistry1
Macromolecular chemistry, polymers1
Environmental technology1
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name10 counted
FRS Group, LLC a subsidiary
US, as the owner printed on each patent
21 publishedCompass Minerals USA Inc. a subsidiary
named as the applicant on its applications, in US
9 publishedFRS Group, LLC a subsidiary
named as the applicant on its applications, in US
7 publishedCompass Minerals America Inc. a subsidiary
named as the applicant on its applications, in US
5 publishedCompass Minerals America Inc. a subsidiary
US, as the owner printed on each patent
0 publishedCompass Minerals USA Inc. a subsidiary
US, as the owner printed on each patent
0 publishedSALT HOLDINGS a former name
US, as the owner printed on each patent
2 publishedCompass Minerals Ogden Inc. a subsidiary
US, as the owner printed on each patent
0 publishedCompass Minerals Ogden Inc. a subsidiary
named as the applicant on its applications, in US
1 publishedSalt Union Limited a subsidiary
GB, as the owner printed on each patent
0 published
Newest grantseach row opens the USPTO’s own copy
| Granted | Patent | Title | Field | Owner as printed |
|---|
| Feb 4, 2025 | 12,214,237 | Long-term fire retardant with corrosion inhibitors and methods for making and using same | Machine tools | FRS Group, LLC |
| Feb 4, 2025 | 12,214,236 | Long-term fire retardant with corrosion inhibitors and methods for making and using same | Machine tools | FRS Group, LLC |
| Oct 8, 2024 | 12,109,446 | Long-term fire retardant with corrosion inhibitors and methods for making and using same | Machine tools | FRS Group, LLC |
| Aug 6, 2024 | 12,053,658 | Long-term fire retardant with corrosion inhibitors and methods for making and using same | Machine tools | FRS Group, LLC |
| May 7, 2024 | 11,975,231 | Long-term fire retardant with corrosion inhibitors and methods for making and using same | Machine tools | FRS Group, LLC |
| Jan 30, 2024 | 11,883,703 | Long-term fire retardant with magnesium sulfate and corrosion inhibitors and methods for making and using same | Machine tools | FRS Group, LLC |
| Jan 9, 2024 | 11,865,392 | Long-term fire retardant with corrosion inhibitors and methods for making and using same | Machine tools | FRS Group, LLC |
| Jan 9, 2024 | 11,865,391 | Long-term fire retardant with corrosion inhibitors and methods for making and using same | Machine tools | FRS Group, LLC |
| Nov 21, 2023 | 11,819,723 | Long-term fire retardant with corrosion inhibitors and methods for making and using same | Machine tools | FRS Group, LLC |
| Nov 21, 2023 | 11,819,722 | Long-term fire retardant with corrosion inhibitors and methods for making and using same | Machine tools | FRS Group, LLC |
Newest applications publishedan application is a clue, never a plan
| Published | Application | Title | Field | Owner as printed |
|---|
| May 1, 2025 | 2025/0135254 | LONG-TERM FIRE RETARDANT WITH CORROSION INHIBITORS AND METHODS FOR MAKING AND USING SAME | Machine tools | FRS Group, LLC |
| Apr 17, 2025 | 2025/0121235 | LONG-TERM FIRE RETARDANT WITH CORROSION INHIBITORS AND METHODS FOR MAKING AND USING SAME | Machine tools | FRS Group, LLC |
| Aug 15, 2024 | 2024/0269501 | LONG-TERM FIRE RETARDANT WITH CORROSION INHIBITORS AND METHODS FOR MAKING AND USING SAME | Machine tools | FRS Group, LLC · patent 12,109,446 granted from it |
| Jul 4, 2024 | 2024/0216737 | LONG-TERM FIRE RETARDANT WITH MAGNESIUM SULFATE AND CORROSION INHIBITORS AND METHODS FOR MAKING AND USING SAME | Machine tools | FRS Group, LLC |
| May 16, 2024 | 2024/0157185 | LONG-TERM FIRE RETARDANT WITH CORROSION INHIBITORS AND METHODS FOR MAKING AND USING SAME | Machine tools | FRS Group, LLC |
| May 9, 2024 | 2024/0149091 | LONG-TERM FIRE RETARDANT WITH CORROSION INHIBITORS AND METHODS FOR MAKING AND USING SAME | Machine tools | FRS Group, LLC · patent 12,214,237 granted from it |
| May 2, 2024 | 2024/0139573 | LONG-TERM FIRE RETARDANT WITH CORROSION INHIBITORS AND METHODS FOR MAKING AND USING SAME | Machine tools | FRS Group, LLC · patent 12,214,236 granted from it |
| Apr 18, 2024 | 2024/0123272 | LONG-TERM FIRE RETARDANT WITH CORROSION INHIBITORS AND METHODS FOR MAKING AND USING SAME | Machine tools | FRS Group, LLC |
| Dec 14, 2023 | 2023/0398393 | LONG-TERM FIRE RETARDANT WITH CORROSION INHIBITORS AND METHODS FOR MAKING AND USING SAME | Machine tools | FRS Group, LLC · patent 12,053,658 granted from it |
| Oct 5, 2023 | 2023/0310917 | LONG-TERM FIRE RETARDANT WITH CORROSION INHIBITORS AND METHODS FOR MAKING AND USING SAME | Machine tools | FRS Group, LLC · patent 11,975,231 granted from it |
What it applied for, 2024 to 2025: Machine tools 8.
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.