Method for designing multi-valve uni-direction blowdown system for a high pressure tubular reactor
US-2018345238-A1 · Dec 6, 2018 · US
Feed or outlet control devices
Feed or outlet control devices · 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 | B01J4/008 |
| Official title | {Feed or outlet control devices} |
| Display label | Feed or outlet control devices |
| Total patents | 358 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 24 |
| 2016 | 13 |
| 2017 | 9 |
| 2018 | 26 |
| 2019 | 28 |
| 2020 | 48 |
| 2021 | 50 |
| 2022 | 40 |
| 2023 | 43 |
| 2024 | 34 |
| 2025 | 33 |
| 2026 | 10 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polymerization Catalyst Delivery
US-2018319909-A1 · Nov 8, 2018 · US
Polymerization inhibiting system and polymerization inhibiting method
US-2018297916-A1 · Oct 18, 2018 · US
Control of Fouling in High Pressure Polyethylene Manufacture
US-2018290120-A1 · Oct 11, 2018 · US
Installation and process for the preparation of hydrogen cyanide
US-2018215626-A1 · Aug 2, 2018 · US
Gas jetting apparatus
US-2018200687-A1 · Jul 19, 2018 · US
Water temperature as a means of controlling kinetics of onsite generated peracids
US-10010075-B2 · Jul 3, 2018 · US
Method for heating a slurry system
US-10010938-B2 · Jul 3, 2018 · US
Multi reactor solution polymerization
US-9963529-B1 · May 8, 2018 · US
Continuous on-line adjustable disinfectant/sanitizer/bleach generator
US-2018098537-A1 · Apr 12, 2018 · US
Vaporization supply apparatus
US-2018071702-A1 · Mar 15, 2018 · US
Non-Contact Reactor And Nanocrystal Fabrication System Having The Same
US-2018050316-A1 · Feb 22, 2018 · US
Catalytic fuel tank inerting apparatus for aircraft
US-2018037334-A1 · Feb 8, 2018 · US
Continuous on-line adjustable disinfectant/sanitizer/bleach generator
US-9861101-B2 · Jan 9, 2018 · US
Production System and Method of Production for Product Selected from Nitrogen-Containing Product and Fermented and Cultured Product
US-2017342449-A1 · Nov 30, 2017 · US
Process for the preparation of an ethylene copolymer in a tubular reactor
US-9771445-B2 · Sep 26, 2017 · US
Fast homogenous coating process
US-2017239650-A1 · Aug 24, 2017 · US
Electrowetting dispensing devices and related methods
US-9671365-B2 · Jun 6, 2017 · US
Unit for processing a liquid/gas phase mixture, mercaptan oxidation system including the same, and method of processing a liquid/gas phase mixture
US-9643146-B2 · May 9, 2017 · US
Process for the preparation of an ethylene copolymer in a tubular reactor
US-2017121434-A1 · May 4, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J4/008?
- CPC B01J4/008 is the Cooperative Patent Classification code for “Feed or outlet control devices.”
- How many patents are filed under CPC B01J4/008 (Feed or outlet control devices)?
- Our database includes 358 publications tagged with this CPC code.
- Is patent activity under CPC B01J4/008 growing?
- Publication counts under this code: 34 in 2024 vs 33 in 2025 (latest complete years).