Fixing band for constant-velocity universal joint boot
US-2018135668-A1 · May 17, 2018 · US
After-treatment
After-treatment · 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 | C23C22/82 |
| Official title | After-treatment |
| Display label | After-treatment |
| Total patents | 261 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 18 |
| 2017 | 21 |
| 2018 | 18 |
| 2019 | 31 |
| 2020 | 23 |
| 2021 | 21 |
| 2022 | 31 |
| 2023 | 14 |
| 2024 | 34 |
| 2025 | 29 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for specifically adjusting the electrical conductivity of conversion coatings
US-2018112314-A1 · Apr 26, 2018 · US
Method for the preparation of a coated metal sheet, comprising the application of an aqueous solution containing an amino acid, and associated use in order to improve corrosion resistance
US-2018023177-A1 · Jan 25, 2018 · US
Method for the Production of a Coated Metal Sheet, Comprising the Application of an Aqueous Solution Containing an Amino Acid, and Associated Use in Order to Improve Tribological Properties
US-2018016681-A1 · Jan 18, 2018 · US
Additive manufacturing processing with oxidation
US-2017370005-A1 · Dec 28, 2017 · US
Object processing by conversion coating
US-2017342587-A1 · Nov 30, 2017 · US
Insulating coating composition for oriented electrical steel sheet, oriented electrical steel sheet having insulating coating formed on surface thereof by using same, and preparation method therefor
US-2017313887-A1 · Nov 2, 2017 · US
Method for making corrosion resistant coating
US-2017292193-A1 · Oct 12, 2017 · US
Coated steel sheet and exterior building material
US-9765223-B2 · Sep 19, 2017 · US
Method for producing organic microdisk structure
US-2017264066-A1 · Sep 14, 2017 · US
Method of manufacturing a steel sheet for containers
US-9738978-B2 · Aug 22, 2017 · US
Coated metal sheet, method for manufacturing same, and exterior building material
US-2017218519-A1 · Aug 3, 2017 · US
Steel wire rod having lubricating coating film that has excellent corrosion resistance and workability
US-2017175021-A1 · Jun 22, 2017 · US
Processes and compositions for improving corrosion performance of zirconium oxide pretreated zinc surfaces
US-2017137947-A1 · May 18, 2017 · US
Treatment solution for chromium-free insulating coating for grain-oriented electrical steel sheet and grain-oriented electrical steel sheet coated with chromium-free insulating coating
US-2017137633-A1 · May 18, 2017 · US
Processes for producing a multilayer coating
US-9631281-B2 · Apr 25, 2017 · US
Process for the Manufacturing of a Steel Strip for Packaging and Associated Equipment
US-2017107626-A1 · Apr 20, 2017 · US
Engine piston and a process for making an engine piston
US-9611803-B2 · Apr 4, 2017 · US
Method for producing black-plated steel sheet, and method for producing molded article of black-plated steel sheet
US-9598773-B2 · Mar 21, 2017 · US
Processes and compositions for improving corrosion performance of zirconium oxide pretreated zinc surfaces
US-2017050215-A9 · Feb 23, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23C22/82?
- CPC C23C22/82 is the Cooperative Patent Classification code for “After-treatment.”
- How many patents are filed under CPC C23C22/82 (After-treatment)?
- Our database includes 261 publications tagged with this CPC code.
- Is patent activity under CPC C23C22/82 growing?
- Publication counts under this code: 34 in 2024 vs 29 in 2025 (latest complete years).