Delayed-Release Particles
US-2017362543-A1 · Dec 21, 2017 · US
Heterocyclic compounds, e.g. lactam
Heterocyclic compounds, e.g. lactam · 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 | C11D3/3776 |
| Official title | {Heterocyclic compounds, e.g. lactam} |
| Display label | Heterocyclic compounds, e.g. lactam |
| Total patents | 257 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 24 |
| 2016 | 29 |
| 2017 | 34 |
| 2018 | 24 |
| 2019 | 32 |
| 2020 | 24 |
| 2021 | 22 |
| 2022 | 16 |
| 2023 | 20 |
| 2024 | 13 |
| 2025 | 14 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cleaning composition
US-2017321170-A1 · Nov 9, 2017 · US
Liquid acidic hard surface cleaning compositions having improved shine
US-2017292092-A1 · Oct 12, 2017 · US
Polymers for industrial laundry detergents
US-2017198240-A1 · Jul 13, 2017 · US
Precursor polyelectrolyte complexes compositions comprising oxidants
US-9663747-B2 · May 30, 2017 · US
Polymers for industrial laundry detergents
US-9637709-B2 · May 2, 2017 · US
Cleaning pad, cleaning implement, and a method of improving shine of a hard surface using the cleaning pad or cleaning implement with a cleaning composition
US-2017096626-A1 · Apr 6, 2017 · US
Cleansing composition containing oligodynamic metal and efficacy enhancing agent
US-2016362646-A1 · Dec 15, 2016 · US
Liquid detergent including polymers for increasing the fragrance performance
US-2016362644-A1 · Dec 15, 2016 · US
Enzyme particles comprising a vinyl pyrrolidone/vinyl acetate copolymer
US-9499773-B2 · Nov 22, 2016 · US
Adhesive Lavatory Treatment Composition and Dispensing Article
US-2016333560-A1 · Nov 17, 2016 · US
Precursor polyelectrolyte complexes compositions
US-9486800-B2 · Nov 8, 2016 · US
Aqueous compositions comprising associative polyelectrolyte complexes (PEC)
US-9474269-B2 · Oct 25, 2016 · US
Laundry care compositions containing dyes
US-2016257912-A1 · Sep 8, 2016 · US
Irritation mitigating polymers and uses therefor
US-9433571-B2 · Sep 6, 2016 · US
Semiconductor substrate treatment liquid, treatment method, and method for manufacturing semiconductor-substrate product using these
US-2016254139-A1 · Sep 1, 2016 · US
Laundering process for whitening synthetic textiles
US-2016237382-A9 · Aug 18, 2016 · US
Cleaning compositions containing alkyl sulfate surfactants and cationic polymer for holistic improvement of sudsing profile
US-2016237381-A1 · Aug 18, 2016 · US
Colour protection detergent
US-9404066-B2 · Aug 2, 2016 · US
Precursor polyelectrolyte complexes compositions
US-2016199828-A1 · Jul 14, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C11D3/3776?
- CPC C11D3/3776 is the Cooperative Patent Classification code for “Heterocyclic compounds, e.g. lactam.”
- How many patents are filed under CPC C11D3/3776 (Heterocyclic compounds, e.g. lactam)?
- Our database includes 257 publications tagged with this CPC code.
- Is patent activity under CPC C11D3/3776 growing?
- Publication counts under this code: 13 in 2024 vs 14 in 2025 (latest complete years).