Chelator compositions for radiometals and methods of using same
US-2023270892-A1 · Aug 31, 2023 · US
having nitrogen as a ring hetero atom, e.g. guanethidine, rifamycins (rifampin A61K51/0459)
having nitrogen as a ring hetero atom, e.g. guanethidine, rifamycins (rifampin A61K51/0459) · Cooperative Patent Classification (CPC)
Agriculture, food, personal care, health, and life sciences.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | A61K51/044 |
| Official title | {having nitrogen as a ring hetero atom, e.g. guanethidine, rifamycins (rifampin A61K51/0459)} |
| Display label | having nitrogen as a ring hetero atom, e.g. guanethidine, rifamycins (rifampin A61K51/0459) |
| Total patents | 82 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 7 |
| 2017 | 5 |
| 2018 | 5 |
| 2019 | 8 |
| 2020 | 8 |
| 2021 | 8 |
| 2022 | 8 |
| 2023 | 5 |
| 2024 | 15 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
PSMA-targeting compounds and uses thereof
US-11661402-B2 · May 30, 2023 · US
Compounds for fast and efficient click release
US-2023121556-A1 · Apr 20, 2023 · US
Pre-targeting imaging agents
US-2022401589-A1 · Dec 22, 2022 · US
Psma-targeting compounds and uses thereof
US-2022259161-A1 · Aug 18, 2022 · US
18f-labeled novel tetrazines imaging probes for pretargeting in pet imaging
US-2022249709-A1 · Aug 11, 2022 · US
Matrix Metalloproteinase Inhibitors and Imaging Agents, And Methods Using Same
US-2022194930-A1 · Jun 23, 2022 · US
Imaging Agents
US-2022162221-A1 · May 26, 2022 · US
Novel tetrazine compounds for in vivo imaging
US-2022119359-A1 · Apr 21, 2022 · US
Matrix metalloproteinase inhibitors and imaging agents, and methods using same
US-11286251-B2 · Mar 29, 2022 · US
Psma targeted fluorescent agents for image guided surgery
US-2022048872-A1 · Feb 17, 2022 · US
Pharmaceutical formulations
US-2021322581-A1 · Oct 21, 2021 · US
Use of labeled inhibitors of prostate specific membrane antigen (psma), as agents for the treatment of prostate cancer
US-2021283279-A1 · Sep 16, 2021 · US
Labeled inhibitors of prostate specific membrane antigen (PSMA) as agents for the treatment of prostate cancer
US-11045564-B2 · Jun 29, 2021 · US
Labeled inhibitors of prostate specific membrane antigen (psma) as agents for the treatment of prostate cancer
US-2021177996-A1 · Jun 17, 2021 · US
PSMA targeted fluorescent agents for image guided surgery
US-11021450-B2 · Jun 1, 2021 · US
Radiolabeled drug
US-10960089-B2 · Mar 30, 2021 · US
Targeting compounds and methods for their production
US-2021030900-A1 · Feb 4, 2021 · US
Chemical conjugates of evans blue derivatives and their use as radiotherapy and imaging agents for targeting prostate cancer
US-2021008232-A1 · Jan 14, 2021 · US
Evaluation of presence of and vulnerability to atrial fibrillation and other indications using matrix metalloproteinase-based imaging
US-2020390912-A1 · Dec 17, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC A61K51/044?
- CPC A61K51/044 is the Cooperative Patent Classification code for “having nitrogen as a ring hetero atom, e.g. guanethidine, rifamycins (rifampin A61K51/0459).”
- How many patents are filed under CPC A61K51/044 (having nitrogen as a ring hetero atom, e.g. guanethidine, rifamycins (rifampin A61K51/0459))?
- Our database includes 82 publications tagged with this CPC code.
- Is patent activity under CPC A61K51/044 growing?
- Publication counts under this code: 15 in 2024 vs 3 in 2025 (latest complete years).