Composition for tin-silver alloy electroplating comprising a complexing agent
US-12559852-B2 · Feb 24, 2026 · US
of an unsaturated carbon skeleton containing rings
of an unsaturated carbon skeleton containing rings · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C07C321/20 |
| Official title | of an unsaturated carbon skeleton containing rings |
| Display label | of an unsaturated carbon skeleton containing rings |
| Total patents | 53 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 7 |
| 2019 | 3 |
| 2020 | 6 |
| 2021 | 5 |
| 2022 | 5 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compound, additive, plasticizer, curable composition, adhesive, cured product, and pressure-sensitive adhesive
US-2025376606-A1 · Dec 11, 2025 · US
Krüppel-Like Factor 15 (KLF15) Small Molecule Agonists in Kidney Disease
US-2025250236-A1 · Aug 7, 2025 · US
Krüppel-like factor 15 (KLF15) small molecule agonists in kidney disease
US-12269803-B2 · Apr 8, 2025 · US
Cytotoxic actin-targeting compounds
US-12239639-B2 · Mar 4, 2025 · US
Inhibitors of the n-terminal domain of the androgen receptor
US-12162818-B2 · Dec 10, 2024 · US
Polycyclic aromatic hydrocarbon-based compounds for molecular electronic device and molecular electronic devices comprising same
US-12103909-B2 · Oct 1, 2024 · US
Methods of preparing cytotoxic benzodiazepine derivatives
US-11981688-B2 · May 14, 2024 · US
Composition for tin-silver alloy electroplating comprising a complexing agent
US-2024060201-A1 · Feb 22, 2024 · US
Aromatic substituted alkane-core monomers and polymers thereof for volume Bragg gratings
US-11780819-B2 · Oct 10, 2023 · US
Krüppel-Like Factor 15 (KLF15) Small Molecule Agonists in Kidney Disease
US-2023219893-A1 · Jul 13, 2023 · US
Krüppel-like factor 15 (KLF15) small molecule agonists in kidney disease
US-11643394-B2 · May 9, 2023 · US
Nurr1 receptor modulators
US-2023063230-A1 · Mar 2, 2023 · US
Methods of preparing cytotoxic benzodiazepine derivatives
US-2023045079-A1 · Feb 9, 2023 · US
Cytotoxic Actin-Targeting Compounds
US-2023037322-A1 · Feb 9, 2023 · US
Inhibitors of the n-terminal domain of the androgen receptor
US-2022380298-A1 · Dec 1, 2022 · US
Onium salt, negative resist composition, and resist pattern forming process
US-11429023-B2 · Aug 30, 2022 · US
Methods of preparing cytotoxic benzodiazepine derivatives
US-11396519-B2 · Jul 26, 2022 · US
Cytotoxic actin-targeting compounds
US-11369594-B2 · Jun 28, 2022 · US
Inhibitors of the N-terminal domain of the androgen receptor
US-11261152-B2 · Mar 1, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C321/20?
- CPC C07C321/20 is the Cooperative Patent Classification code for “of an unsaturated carbon skeleton containing rings.”
- How many patents are filed under CPC C07C321/20 (of an unsaturated carbon skeleton containing rings)?
- Our database includes 53 publications tagged with this CPC code.
- Is patent activity under CPC C07C321/20 growing?
- Publication counts under this code: 4 in 2024 vs 4 in 2025 (latest complete years).