Open tubular liquid chromatography apparatus and methods of use
US-2018328900-A1 · Nov 15, 2018 · US
of pipes
of pipes · 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 | B05D7/222 |
| Official title | {of pipes} |
| Display label | of pipes |
| Total patents | 126 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 10 |
| 2017 | 23 |
| 2018 | 15 |
| 2019 | 14 |
| 2020 | 9 |
| 2021 | 7 |
| 2022 | 8 |
| 2023 | 8 |
| 2024 | 6 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Reinforced coreless tube extrusion systems and methods
US-2018236703-A1 · Aug 23, 2018 · US
Functionalized surfaces for multiphase wettability
US-2018178248-A1 · Jun 28, 2018 · US
Method for coating internal surfaces
US-2018141082-A1 · May 24, 2018 · US
Superhydrophobic compositions and coating process for the internal surface of tubular structures
US-9926467-B2 · Mar 27, 2018 · US
Composition comprising cyclic secondary amine and methods of coating drinking water pipelines
US-9908146-B2 · Mar 6, 2018 · US
System for capillary electrophoresis for peptide and protein analysis
US-2017363576-A1 · Dec 21, 2017 · US
Prosthetic heart valve formation
US-9814572-B2 · Nov 14, 2017 · US
Method and apparatus for additive mechanical growth of tubular structures
US-9808991-B2 · Nov 7, 2017 · US
Superhydrophobic Compositions And Coating Process For The Internal Surface Of Tubular Structures
US-2017306182-A1 · Oct 26, 2017 · US
In-line measuring device with measuring tube lined internally with polyurethane and method for manufacture thereof
US-9782798-B2 · Oct 10, 2017 · US
Apparatus and method for servicing pipes
US-9752398-B2 · Sep 5, 2017 · US
Apparatus for in-situ pipe coating and related methods
US-9737900-B2 · Aug 22, 2017 · US
Method for selective treatment of microbiologically influenced corrosion (MIC) of metal surfaces
US-9732369-B2 · Aug 15, 2017 · US
Composition comprising cyclic secondary amine and methods of coating drinking water pipelines
US-2017218224-A1 · Aug 3, 2017 · US
Method for preparing rotolined articles
US-9718090-B2 · Aug 1, 2017 · US
Method for coating pipe with acid-curable resin and acid curing agent
US-9718985-B2 · Aug 1, 2017 · US
Coated microfluidic devices and methods of making
US-9707557-B2 · Jul 18, 2017 · US
Superhydrophobic compositions and coating process for the internal surface of tubular structures
US-9701869-B2 · Jul 11, 2017 · US
Method of lining an inner surface of a tubular and system for doing same
US-2017189936-A1 · Jul 6, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B05D7/222?
- CPC B05D7/222 is the Cooperative Patent Classification code for “of pipes.”
- How many patents are filed under CPC B05D7/222 (of pipes)?
- Our database includes 126 publications tagged with this CPC code.
- Is patent activity under CPC B05D7/222 growing?
- Publication counts under this code: 6 in 2024 vs 4 in 2025 (latest complete years).