Method For Purifying Reclaimed Polyethylene
US-2019390032-A1 · Dec 26, 2019 · US
Pressure vessels, e.g. autoclaves
Pressure vessels, e.g. autoclaves · 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 | B01J3/04 |
| Official title | Pressure vessels, e.g. autoclaves |
| Display label | Pressure vessels, e.g. autoclaves |
| Total patents | 181 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 9 |
| 2017 | 14 |
| 2018 | 21 |
| 2019 | 11 |
| 2020 | 17 |
| 2021 | 21 |
| 2022 | 16 |
| 2023 | 25 |
| 2024 | 17 |
| 2025 | 16 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method For Purifying Reclaimed Polypropylene
US-2019390031-A1 · Dec 26, 2019 · US
Defoaming device and method
US-2019366240-A1 · Dec 5, 2019 · US
High pressure free-radical polymerizations
US-10457757-B2 · Oct 29, 2019 · US
Method for producing expanded thermoplastic polymers
US-2019292345-A1 · Sep 26, 2019 · US
Energy and water recovery from pressure oxidation flash vessel steam
US-10323295-B2 · Jun 18, 2019 · US
System for preparing nanoparticles by supercritical hydrothermal synthesis
US-10195671-B2 · Feb 5, 2019 · US
High-pressure reactor for the synthesis of melamine
US-10155729-B2 · Dec 18, 2018 · US
Corrosion inhibition in hydrothermal processing
US-2018345241-A1 · Dec 6, 2018 · US
Shift reactor for direct fuel cell hydrogen system
US-10109874-B2 · Oct 23, 2018 · US
Systems and methods for nanofunctionalization of powders
US-2018272426-A1 · Sep 27, 2018 · US
Rapid Depressurization of a Reactor System
US-2018257055-A1 · Sep 13, 2018 · US
Pressurised appliance with a cover comprising a sampling tip having at least one closable opening
US-2018243708-A1 · Aug 30, 2018 · US
Apparatus and process for continuous saccharification of marine algae and cellulosic biomass
US-10041031-B2 · Aug 7, 2018 · US
Capsule assemblies for ultra-high pressure presses and methods for using them
US-2018214836-A1 · Aug 2, 2018 · US
Epoxy resin composition, fiber reinforced composite material, molded article, and pressure vessel
US-2018186946-A1 · Jul 5, 2018 · US
Experimental device and method for studying relationship between sediment yield behavior and radial deformation of porous media during exploitation of natural gas hydrates
US-2018172574-A1 · Jun 21, 2018 · US
High pressure free-radical polymerizations
US-2018134824-A1 · May 17, 2018 · US
Autoclave and method for welding thermoplastic composite parts
US-2018133681-A1 · May 17, 2018 · US
Method for adding starting material slurry and sulfuric acid to autoclave in high pressure acid leaching process and autoclave
US-9970077-B2 · May 15, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J3/04?
- CPC B01J3/04 is the Cooperative Patent Classification code for “Pressure vessels, e.g. autoclaves.”
- How many patents are filed under CPC B01J3/04 (Pressure vessels, e.g. autoclaves)?
- Our database includes 181 publications tagged with this CPC code.
- Is patent activity under CPC B01J3/04 growing?
- Publication counts under this code: 17 in 2024 vs 16 in 2025 (latest complete years).