- All sections
- A - Human necessities
- A61K - Preparations for medical, dental or toiletry purposes
- A61K 31/221 - Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids of acyclic acids, e.g. pravastatin with compounds having an amino group, e.g. acetylcholine, acetylcarnitine
Patent holdings for IPC class A61K 31/221
Total number of patents in this class: 347
10-year publication summary
|
32
|
35
|
33
|
27
|
28
|
26
|
29
|
22
|
15
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Run Them Sweet, LLC | 19 |
10 |
| SBI Pharmaceuticals Co., Ltd. | 108 |
10 |
| Navitor Pharmaceuticals, Inc. | 32 |
7 |
| The Regents of the University of California | 19517 |
6 |
| Hough Ear Institute | 29 |
6 |
| Vymedic, Inc. | 10 |
6 |
| Children's Medical Center Corporation | 1826 |
5 |
| Consejo Superior de Investigaciones Cientificas (csic) | 1320 |
5 |
| Keyview Labs, Inc. | 16 |
5 |
| Oklahoma Medical Research Foundation | 157 |
5 |
| Sigma-Tau Industrie Farmaceutiche Riunite S.p.A. | 89 |
5 |
| Vireo Systems, Inc. | 68 |
5 |
| Abergavenny, Naamloze vennootschap | 6 |
5 |
| Xwpharma Ltd. | 59 |
5 |
| Photocure ASA | 76 |
4 |
| Queen's University at Kingston | 534 |
4 |
| Universidad Miguel Hernandez de Elche | 69 |
4 |
| The University of Tokyo | 4060 |
4 |
| Recurium IP Holdings, LLC | 148 |
4 |
| Novartis AG | 11254 |
3 |
| Other owners | 239 |