Method for manufacturing propeller shaft
US-10132361-B2 · Nov 20, 2018 · 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 | B23K11/34 |
| Official title | Preliminary treatment |
| Display label | Preliminary treatment |
| Total patents | 237 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 22 |
| 2017 | 14 |
| 2018 | 20 |
| 2019 | 44 |
| 2020 | 30 |
| 2021 | 28 |
| 2022 | 25 |
| 2023 | 17 |
| 2024 | 12 |
| 2025 | 11 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Metal joining using ultrasonic and reaction metallurgical welding processes
US-2018281101-A1 · Oct 4, 2018 · US
Bonding method, and method of manufacturing different-material bonded body
US-2018272411-A1 · Sep 27, 2018 · US
Forged rivet for joining dissimilar materials, dissimilar-material joining method, and dissimilar-material joined body
US-2018272417-A1 · Sep 27, 2018 · US
Electric resistance welded steel pipe excellent in weld zone and method of production of same
US-10081042-B2 · Sep 25, 2018 · US
Method for bonding electrical conductors
US-2018269755-A1 · Sep 20, 2018 · US
Method of projection welding hardware to steel sheet for hot stamping
US-2018250766-A1 · Sep 6, 2018 · US
Thermal mass flow meter and mass flow controller
US-10041823-B2 · Aug 7, 2018 · US
Device and process for simultaneous shaping and welding of connector pipes for compressors
US-9975197-B2 · May 22, 2018 · US
Dissimilar material joined body and dissimilar material joining method
US-2018079025-A1 · Mar 22, 2018 · US
Method of spot welding
US-2018079026-A1 · Mar 22, 2018 · US
Robot selection method and robot selection device
US-2018024539-A1 · Jan 25, 2018 · US
Method and device for resistance welding steel sandwich sheets
US-2018009057-A1 · Jan 11, 2018 · US
Resistance spot welding steel and aluminum workpieces with hot welding electrode at aluminum workpiece
US-9839971-B2 · Dec 12, 2017 · US
Different material joining structure and different material joining method
US-2017349221-A1 · Dec 7, 2017 · US
Steel sheet assembly, method of manufacturing steel sheet assembly, and spot welding process
US-2017348790-A1 · Dec 7, 2017 · US
Method and apparatus for resistance welding of steel sandwich sheets
US-2017326677-A1 · Nov 16, 2017 · US
Method of welding a nickel strength lug with a bronze connecting pin and a brass contact ring in an accelerometer sensor
US-2017312847-A1 · Nov 2, 2017 · US
Resistance spot welding aluminum to steel using preplaced metallurgical additives
US-2017297134-A1 · Oct 19, 2017 · US
Control of intermetallic compound growth in aluminum to steel resistance welding
US-2017297136-A1 · Oct 19, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B23K11/34?
- CPC B23K11/34 is the Cooperative Patent Classification code for “Preliminary treatment.”
- How many patents are filed under CPC B23K11/34 (Preliminary treatment)?
- Our database includes 237 publications tagged with this CPC code.
- Is patent activity under CPC B23K11/34 growing?
- Publication counts under this code: 12 in 2024 vs 11 in 2025 (latest complete years).