Scroll compressor including fixed and orbiting scroll having stepped portions and a surface hardened treatment
US-11939977-B2 · Mar 26, 2024 · US
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Hardening; Annealing
Hardening; Annealing · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F04C2230/41 |
| Official title | Hardening; Annealing |
| Display label | Hardening; Annealing |
| Total patents | 16 |
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 | 1 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 5 |
| 2020 | 1 |
| 2021 | 3 |
| 2022 | 1 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compressor including laser-hardened bearing surfaces
US-2022099091-A1 · Mar 31, 2022 · US
Scroll compressor including fixed and orbiting scrolls having different heights and surface hardenings
US-11092155-B2 · Aug 17, 2021 · US
Automotive auxiliary assembly vacuum pump having a single-piece flange element
US-11078912-B2 · Aug 3, 2021 · US
Scroll compressor including a fixed and orbiting scroll
US-2021148361-A1 · May 20, 2021 · US
Scroll compressor with coated sliding surface
US-10711783-B2 · Jul 14, 2020 · US
Scroll compressor
US-10495088-B2 · Dec 3, 2019 · US
Automotive auxiliary assembly vacuum pump having a single-piece flange element
US-2019338642-A1 · Nov 7, 2019 · US
Scroll compressor with different chamfered corners
US-10458407-B2 · Oct 29, 2019 · US
Wear resistant coatings containing precipitation-hardened alloy bodies and methods for the formation thereof
US-2019292674-A1 · Sep 26, 2019 · US
Sliding member for a compressor
US-10294941-B2 · May 21, 2019 · US
Scroll compressor
US-2018038368-A1 · Feb 8, 2018 · US
Scroll compressor
US-2018017055-A1 · Jan 18, 2018 · US
Compressor
US-2017218954-A1 · Aug 3, 2017 · US
Scroll compressor
US-2017067466-A1 · Mar 9, 2017 · US
Gear pump
US-9127672-B2 · Sep 8, 2015 · US