Method for manufacturing Sr ferrite particle for sintered magnet, method for using Sr ferrite particle, Sr ferrite sintered magnet and method for manufacturing same, and motor and generator
US-9530548-B2 · Dec 27, 2016 · US
Carbonates
Carbonates · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C04B2235/442 |
| Official title | Carbonates |
| Display label | Carbonates |
| Total patents | 558 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 41 |
| 2016 | 42 |
| 2017 | 53 |
| 2018 | 46 |
| 2019 | 48 |
| 2020 | 56 |
| 2021 | 58 |
| 2022 | 66 |
| 2023 | 63 |
| 2024 | 42 |
| 2025 | 34 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods for producing a silicon-containing zirconia calcined body and a silicon-containing zirconia sintered body
US-9522848-B2 · Dec 20, 2016 · US
Ultra-high dielectric constant garnet
US-2016362341-A1 · Dec 15, 2016 · US
Coated barium titanate particulate and production method for same
US-9478356-B2 · Oct 25, 2016 · US
Shrinkage control in aluminum titanate using carbonates
US-9475734-B2 · Oct 25, 2016 · US
Dielectric ceramic composition and multilayer ceramic capacitor including the same
US-9458063-B2 · Oct 4, 2016 · US
Method for manufacturing rectangular parallelepiped-shaped single crystal, rectangular parallelepiped-shaped single crystal, method for manufacturing ceramics, ceramics, piezoelectric element, piezoelectric device, and electronic device
US-2016273125-A1 · Sep 22, 2016 · US
Piezoelectric composition and piezoelectric element
US-9437807-B2 · Sep 6, 2016 · US
Lithium secondary battery and cathode of the lithium secondary battery with conductive bonding layer
US-9425454-B2 · Aug 23, 2016 · US
Dielectric ceramic composition and multilayer ceramic capacitor comprising the same
US-9424991-B2 · Aug 23, 2016 · US
Beta-aluminum oxide ceramics obtainable by extrusion of a mixture that contains a sodium compound
US-2016221242-A1 · Aug 4, 2016 · US
Oxide ceramic and ceramic electronic component
US-2016155562-A1 · Jun 2, 2016 · US
Multilayer ceramic capacitor and method for producing the same
US-2016118188-A1 · Apr 28, 2016 · US
Modified carrier for silver based ethylene oxide catalyst
US-9321035-B2 · Apr 26, 2016 · US
Polycrystalline diamond compact (PDC) cutting element having multiple catalytic elements
US-9316060-B1 · Apr 19, 2016 · US
Manufacturing method for piezoelectric ceramics
US-2016104833-A1 · Apr 14, 2016 · US
Piezoelectric material, piezoelectric element, liquid discharge head, ultrasonic motor, and dust removing device
US-9306149-B2 · Apr 5, 2016 · US
Ferrite particles and electrophotographic development carrier using same, electrophotographic developer and method of manufacturing ferrite particles
US-2016041487-A1 · Feb 11, 2016 · US
Piezoelectric ceramics, manufacturing method therefor, piezoelectric element, liquid discharge head, ultrasonic motor, and dust removal device
US-9231188-B2 · Jan 5, 2016 · US
Mixed proton and carbonate ion conductor
US-9225030-B1 · Dec 29, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B2235/442?
- CPC C04B2235/442 is the Cooperative Patent Classification code for “Carbonates.”
- How many patents are filed under CPC C04B2235/442 (Carbonates)?
- Our database includes 558 publications tagged with this CPC code.
- Is patent activity under CPC C04B2235/442 growing?
- Publication counts under this code: 42 in 2024 vs 34 in 2025 (latest complete years).