Aluminum alloy plate for magnetic disc substrate, method for manufacturing same, and method for manufacturing magnetic disc
US-2016351224-A1 · Dec 1, 2016 · US
Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25 (coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups C23C2/00 - C23C26/00, or by combinations of methods providedfor in subclasses C23C and C25D, C23C28/00)
Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25 (coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups C23C2/00 - C23C26/00, or by combinations of methods providedfor in subclasses C23C and C25D, C23C28/00) · 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 | C23F17/00 |
| Official title | Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25 (coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups C23C2/00 - C23C26/00, or by combinations of methods providedfor in subclasses C23C and C25D, C23C28/00) |
| Display label | Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25 (coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups C23C2/00 - C23C26/00, or by combinations of methods providedfor in subclasses C23C and C25D, C23C28/00) |
| Total patents | 401 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 29 |
| 2016 | 31 |
| 2017 | 59 |
| 2018 | 39 |
| 2019 | 52 |
| 2020 | 41 |
| 2021 | 42 |
| 2022 | 34 |
| 2023 | 22 |
| 2024 | 24 |
| 2025 | 21 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Bake- hardening galvanized steel sheet
US-2016298207-A1 · Oct 13, 2016 · US
Coated wire for bonding applications
US-2016288272-A1 · Oct 6, 2016 · US
Continuous annealing furnace for annealing steel strip, method for continuously annealing steel strip, continous hot-dip galvanizing facility, and method for manufacturing hot-dip galvanized steel strip
US-2016290721-A1 · Oct 6, 2016 · US
Bearing steel
US-2016273587-A1 · Sep 22, 2016 · US
High-strength hot-rolled steel sheet and method for producing the same
US-2016258032-A1 · Sep 8, 2016 · US
Plating method
US-2016258066-A1 · Sep 8, 2016 · US
Stress relief of mechanically roughened cylinder bores for reduced cracking tendency
US-2016258047-A1 · Sep 8, 2016 · US
Ion implant assisted metal etching
US-9435038-B2 · Sep 6, 2016 · US
Biofilm resistant medical implant
US-2016250394-A1 · Sep 1, 2016 · US
Method of fabricating a nitrided low-alloy steel part
US-2016237545-A1 · Aug 18, 2016 · US
Method of forming a nitinol stent
US-2016235563-A1 · Aug 18, 2016 · US
Method of selectively treating copper in the presence of further metal
US-2016222519-A1 · Aug 4, 2016 · US
Continuous annealing furnace for annealing steel strip, method for continuously annealing steel strip, continuous hot-dip galvanizing facility, and method for manufacturing hot-dip galvanized steel strip
US-9388484-B2 · Jul 12, 2016 · US
Bearing part, rolling bearing, and method of manufacturing bearing part
US-2016178009-A1 · Jun 23, 2016 · US
Method of forming a nitinol stent
US-2016166413-A1 · Jun 16, 2016 · US
Method for preparing zero-mode waveguide arrays with coated walls
US-9366814-B2 · Jun 14, 2016 · US
Methods for cyclically etching a metal layer for an interconnection structure for semiconductor applications
US-9359679-B2 · Jun 7, 2016 · US
Porous metal body, method for manufacturing porous metal body, and fuel cell
US-2016156045-A1 · Jun 2, 2016 · US
Polarizer with wire pair over rib
US-9354374-B2 · May 31, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23F17/00?
- CPC C23F17/00 is the Cooperative Patent Classification code for “Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25 (coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups C23C2/00 - C23C26/00, or by combinations of methods providedfor in subclasses C23C and C25D, C23C28/00).”
- How many patents are filed under CPC C23F17/00 (Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25 (coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups C23C2/00 - C23C26/00, or by combinations of methods providedfor in subclasses C23C and C25D, C23C28/00))?
- Our database includes 401 publications tagged with this CPC code.
- Is patent activity under CPC C23F17/00 growing?
- Publication counts under this code: 24 in 2024 vs 21 in 2025 (latest complete years).