Kadant Inc. (KAI)
NYSE: KAI · Special Industry Machinery (No Metalworking Machinery) · Westford, MA · filing with the SEC since 1996
Grade5.6
◀ Past 6.6● Present 5.9▶ Future 4.1
Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026157 patents granted to the 25 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 Kadant Inc.’s names, not what it holds today.
Patents granted
157
150 utility, 4 design, 3 reissue, 1976 to Dec 31, 2025
Granted in 2025
9
Against 3 in 2024 and 4 in 2023
Applications published
67
4 of them in 2025
Names they are printed under
25
its own name, a subsidiary, a former name
By yearGrantedApplications published
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
Chemical engineering9
Textile and paper machines7
Surface technology, coating2
Mechanical elements1
Handling1
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name25 counted
Kadant Inc. its own name
US, as the owner printed on each patent
10 published
Kadant Black Clawson LLC a subsidiary
US, as the owner printed on each patent
17 published
Key Knife, Inc. a subsidiary
US, as the owner printed on each patent
0 published
Nicholson Manufacturing Ltd. a subsidiary
US, as the owner printed on each patent
1 published
Kadant Johnson LLC a subsidiary
US, as the owner printed on each patent
8 published
Thermo Fibertek Inc. a former name
US, as the owner printed on each patent
0 published
Kadant Inc. its own name
named as the applicant on its applications, in US
11 published
Joh. Clouth GmbH & Co. KG a subsidiary
DE, as the owner printed on each patent
4 published
KADANT LAMORT a subsidiary
FR, as the owner printed on each patent
0 published
KADANT LAMORT a subsidiary
named as the applicant on its applications, in FR
6 published
KADANT GRANTEK INC. a subsidiary
US, as the owner printed on each patent
1 published
Kadant Canada Corp. a subsidiary
CA, as the owner printed on each patent
1 published
Vickerys Limited a subsidiary
GB, as the owner printed on each patent
0 published
Valon Kone Oy a subsidiary
FI, as the owner printed on each patent
0 published
Kadant Nordic AB a subsidiary
named as the applicant on its applications, in SE
2 published
Lindsay Forest Products, Inc. a subsidiary
US, as the owner printed on each patent
1 published
Vayeron Pty Ltd a subsidiary
named as the applicant on its applications, in AU
2 published
CLOUTH SPRENGER GMBH a subsidiary
DE, as the owner printed on each patent
0 published
Kadant Black Clawson LLC a subsidiary
named as the applicant on its applications, in US
1 published
Kadant Composites Inc. a subsidiary
US, as the owner printed on each patent
0 published
Kadant Fibergen, Inc. a subsidiary
US, as the owner printed on each patent
0 published
Kadant Johnson LLC. a subsidiary
named as the applicant on its applications, in US
1 published
Kadant Nordic AB a subsidiary
SE, as the owner printed on each patent
0 published
Kadant PAAL GmbH a subsidiary
DE, as the owner printed on each patent
0 published
Kadant PAAL GmbH a subsidiary
named as the applicant on its applications, in DE
1 published
Names not counted (1)
Clyde Industries Inc.
Most of its patents print AU; this name counts in US. 7 granted and 0 published under it are not counted.
Newest grantseach row opens the USPTO’s own copy
Newest applications publishedan application is a clue, never a plan
What it applied for, 2024 to 2025: Textile and paper machines 4 · Chemical engineering 3.
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.