Carbon spheres and methods of making the same
US-10138129-B2 · Nov 27, 2018 · US
for feeding measured {, i.e. prescribed} quantities of reagents
for feeding measured {, i.e. prescribed} quantities of reagents · 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 | B01J4/02 |
| Official title | for feeding measured {, i.e. prescribed} quantities of reagents |
| Display label | for feeding measured {, i.e. prescribed} quantities of reagents |
| Total patents | 222 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 15 |
| 2017 | 14 |
| 2018 | 15 |
| 2019 | 15 |
| 2020 | 25 |
| 2021 | 23 |
| 2022 | 27 |
| 2023 | 28 |
| 2024 | 19 |
| 2025 | 17 |
| 2026 | 7 |
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
Method and apparatus of manufacturing exhaust gas-purifying catalyst
US-2018250630-A1 · Sep 6, 2018 · US
Methods and systems for depositing active ingredients on substrates
US-2018228737-A1 · Aug 16, 2018 · US
Method And Device for Metering Building Material in a Generative Production Method
US-2018222112-A1 · Aug 9, 2018 · US
Installation and process for the preparation of hydrogen cyanide
US-2018215626-A1 · Aug 2, 2018 · US
Multi reactor solution polymerization
US-9963529-B1 · May 8, 2018 · US
Process and plant for the synthesis of urea and melamine
US-9957239-B2 · May 1, 2018 · US
Large-scale composite synthesis system, reactor and composite synthesis method using the same
US-9950317-B2 · Apr 24, 2018 · US
Installation and process for the preparation of hydrogen cyanide
US-9944533-B2 · Apr 17, 2018 · US
Combined reactor for high-pressure synthesis of melamine
US-9938247-B2 · Apr 10, 2018 · US
Non-Contact Reactor And Nanocrystal Fabrication System Having The Same
US-2018050316-A1 · Feb 22, 2018 · US
Methods for Supplying Solid Catalysts to a Solution Polymerization Reactor
US-2018044453-A1 · Feb 15, 2018 · US
Apparatus and method for self-regulating fluid chemical delivery
US-9857027-B2 · Jan 2, 2018 · US
Evaporative gas generating device, method for producing evaporative gas, hydrogen bromide production device, and method for producing hydrogen bromide
US-9835325-B2 · Dec 5, 2017 · US
Carbon spheres and methods of making the same
US-2017341941-A1 · Nov 30, 2017 · US
Multi-additive delivery system
US-9821288-B2 · Nov 21, 2017 · US
Liner-based liquid storage and dispensing systems with empty detection capability
US-9802749-B2 · Oct 31, 2017 · US
Reverse-phase polymerisation process
US-9765167-B2 · Sep 19, 2017 · US
Hydride generation system
US-9752987-B1 · Sep 5, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J4/02?
- CPC B01J4/02 is the Cooperative Patent Classification code for “for feeding measured {, i.e. prescribed} quantities of reagents.”
- How many patents are filed under CPC B01J4/02 (for feeding measured {, i.e. prescribed} quantities of reagents)?
- Our database includes 222 publications tagged with this CPC code.
- Is patent activity under CPC B01J4/02 growing?
- Publication counts under this code: 19 in 2024 vs 17 in 2025 (latest complete years).