Low-density clad steel sheet having excellent formability and fatigue property and manufacturing method therefor
US-2024326399-A1 · Oct 3, 2024 · US
Preliminary treatment
Preliminary treatment · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B23K20/24 |
| Official title | Preliminary treatment |
| Display label | Preliminary treatment |
| Total patents | 465 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 35 |
| 2016 | 31 |
| 2017 | 45 |
| 2018 | 63 |
| 2019 | 56 |
| 2020 | 46 |
| 2021 | 44 |
| 2022 | 47 |
| 2023 | 33 |
| 2024 | 36 |
| 2025 | 23 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Bonding method, bonder, and bonding system
US-2024066624-A1 · Feb 29, 2024 · US
Shanks and methods for forming such shanks
US-2016356305-A1 · Dec 8, 2016 · US
Systems and methods for ultrasonic welding
US-2016354974-A1 · Dec 8, 2016 · US
Systems and methods for ultrasonic welding
US-2016354858-A1 · Dec 8, 2016 · US
Manufacture of a hollow aerofoil
US-2016311052-A1 · Oct 27, 2016 · US
Tube profile machining process
US-9463527-B2 · Oct 11, 2016 · US
Integrate rinse module in hybrid bonding platform
US-9446467-B2 · Sep 20, 2016 · US
Semiconductor device with mechanical lock features between a semiconductor die and a substrate
US-9425161-B2 · Aug 23, 2016 · US
Systems of bonded substrates
US-9418959-B1 · Aug 16, 2016 · US
Friction welding
US-2016228979-A1 · Aug 11, 2016 · US
Friction stir welding method
US-2016221116-A1 · Aug 4, 2016 · US
Friction stir welding method for steel sheets and method of manufacturing joint
US-2016214203-A1 · Jul 28, 2016 · US
Method for joining dissimilar metal parts for improved weldability, weld quality, mechanical performance
US-2016207140-A1 · Jul 21, 2016 · US
Extruded metal sub-frame for a vehicle
US-9394002-B2 · Jul 19, 2016 · US
Friction stir spot welding structure
US-2016184921-A1 · Jun 30, 2016 · US
Friction Stir Welding Method and Friction Stir Welding Apparatus
US-2016167163-A1 · Jun 16, 2016 · US
Friction stir weld plugs and methods of using thereof
US-2016136754-A1 · May 19, 2016 · US
Nano-grained multilayer copper alloy sheet having high strength and high electrical conductivity, and method for manufacturing same
US-9296064-B2 · Mar 29, 2016 · US
Hybrid induction welding process applied to piston manufacturing
US-2016061142-A1 · Mar 3, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B23K20/24?
- CPC B23K20/24 is the Cooperative Patent Classification code for “Preliminary treatment.”
- How many patents are filed under CPC B23K20/24 (Preliminary treatment)?
- Our database includes 465 publications tagged with this CPC code.
- Is patent activity under CPC B23K20/24 growing?
- Publication counts under this code: 36 in 2024 vs 23 in 2025 (latest complete years).