Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026
24 patents granted to the 12 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 Darling Ingredients Inc.’s names, not what it holds today.
Patents granted
24
24 utility, 1976 to Dec 31, 2025
Granted in 2025
4
Against 2 in 2024 and 1 in 2023
Applications published
29
6 of them in 2025
Names they are printed under
12
a subsidiary, its own name, a former name
By yearGrantedApplications published
'00'01'07'14'15'16'17'18'19'20'21'22'23'24'25
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
Pharmaceuticals4
Other special machines2
Food chemistry1
Measurement1
Medical technology1
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name12 counted
ROUSSELOT B.V. a subsidiary
named as the applicant on its applications, in BE
16 publishedROUSSELOT B.V. a subsidiary
NL, as the owner printed on each patent
3 publishedDarling Ingredients Inc. its own name
named as the applicant on its applications, in US
5 publishedDarling International, Inc. a former name
US, as the owner printed on each patent
0 publishedGriffin Industries LLC a subsidiary
US, as the owner printed on each patent
0 publishedDarling Ingredients Inc. its own name
US, as the owner printed on each patent
0 publishedCTH B.V. a subsidiary
NL, as the owner printed on each patent
0 publishedCTH B.V. a subsidiary
named as the applicant on its applications, in NL. 1 more under the same name are not counted (printed in IL)
2 publishedEnviroflight, LLC a subsidiary
US, as the owner printed on each patent
1 publishedDarling Ingredients Nederland B.V. a subsidiary
named as the applicant on its applications, in NL
1 publishedDarling National LLC a subsidiary
US, as the owner printed on each patent
0 publishedEnviroFlight, LLC a subsidiary
named as the applicant on its applications, in US
1 publishedNames not counted (1)
LARU GmbH
Most of its patents print US; this name counts in DE. 2 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 |
|---|
| Oct 14, 2025 | 12,440,533 | Collagen hydrolysate composition for reducing joint pain after exercise | Pharmaceuticals | ROUSSELOT B.V. |
| Jul 29, 2025 | 12,371,569 | Low endotoxin gelatin-(meth)acryloyl | Medical technology | ROUSSELOT B.V. |
| Feb 18, 2025 | 12,226,459 | Collagen hydrolysate for use in prevention and/or treatment of post intensive care syndrome (pics) | Pharmaceuticals | ROUSSELOT B.V. |
| Jan 14, 2025 | 12,193,451 | Separating an intestine from a bowel package | Other special machines | CTH B.V. |
| Sep 3, 2024 | 12,075,790 | Intestine selection | Other special machines | CTH B.V. |
| Jul 16, 2024 | 12,038,316 | Fluid storage systems and monitoring | Measurement | Darling Ingredients Inc. |
| Oct 24, 2023 | 11,795,489 | Low cross-linking gelatine | Pharmaceuticals | ROUSSELOT B.V. |
| Nov 8, 2022 | 11,490,634 | Method and composition for the preparation of gelatin based gummy candies | Food chemistry | ROUSSELOT B.V. |
| Sep 7, 2021 | 11,110,147 | Collagen hydrolysates as a beneficial prebiotic and their effect on joint inflammation and osteoarthritis | Pharmaceuticals | ROUSSELOT B.V. |
| Dec 18, 2018 | 10,155,805 | Gelatin purification | Macromolecular chemistry, polymers | ROUSSELOT B.V. |
Newest applications publishedan application is a clue, never a plan
| Published | Application | Title | Field | Owner as printed |
|---|
| Sep 4, 2025 | 2025/0276107 | HYDROGEL SYSTEMS AND METHODS FOR TREATING FISTULA AND OTHER INDICATIONS | Medical technology | ROUSSELOT B.V. |
| Aug 14, 2025 | 2025/0257096 | THE USE OF FATTY ALCOHOL POLYGLYCOL ETHER TO REDUCE ENDOTOXIN ACTIVITY AND/OR ENDOTOXINS IN COLLAGEN-CONTAINING AND/OR COLLAGEN-DERIVED PRODUCTS | Biotechnology | ROUSSELOT B.V. |
| Aug 14, 2025 | 2025/0255928 | USE OF COLLAGEN HYDROLYSATE AS AN ACTIVE INGREDIENT IN AMELIORATING SLEEP | Pharmaceuticals | ROUSSELOT B.V. |
| Jun 5, 2025 | 2025/0177472 | HYDROLYZED COLLAGEN FOR USE IN REDUCING BLOOD GLUCOSE | Biotechnology | ROUSSELOT B.V. |
| Apr 10, 2025 | 2025/0114427 | COLLAGEN HYDROLYSATE COMPOSITION FOR REDUCING JOINT PAIN AFTER EXERCISE | Pharmaceuticals | ROUSSELOT B.V. · patent 12,440,533 granted from it |
| Apr 10, 2025 | 2025/0114426 | USE OF COLLAGEN HYDROLYSATE IN PREVENTION AND/OR TREATMENT OF FOOD CRAVING | Food chemistry | ROUSSELOT B.V. |
| Dec 19, 2024 | 2024/0415938 | COLLAGEN HYDROLYSATE FOR USE IN PREVENTION AND/OR TREATMENT OF POST INTENSIVE CARE SYNDROME (PICS) | Pharmaceuticals | ROUSSELOT B.V. · patent 12,226,459 granted from it |
| Oct 17, 2024 | 2024/0344875 | FLUID STORAGE SYSTEMS AND MONITORING | Measurement | Darling Ingredients Inc. |
| Sep 19, 2024 | 2024/0306654 | Separating an Intestine from a Bowel Package | Other special machines | CTH B.V. · patent 12,193,451 granted from it |
| Aug 15, 2024 | 2024/0270823 | CROSSLINKABLE FUNCTIONALISED-GELATIN HAVING LOW PYROGENIC ACTIVITY | Biotechnology | ROUSSELOT B.V. |
What it applied for, 2024 to 2025: Biotechnology 3 · Pharmaceuticals 3 · Other special machines 1 · Measurement 1 · Food chemistry 1 · Medical technology 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.