Morphologically controlled synthesis of ferric oxide nano/micro particles
US-2019366305-A1 · Dec 5, 2019 · US
with a polygonal circumferential shape
with a polygonal circumferential shape · 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 | C01P2004/22 |
| Official title | with a polygonal circumferential shape |
| Display label | with a polygonal circumferential shape |
| Total patents | 140 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 17 |
| 2017 | 11 |
| 2018 | 8 |
| 2019 | 20 |
| 2020 | 11 |
| 2021 | 10 |
| 2022 | 13 |
| 2023 | 15 |
| 2024 | 24 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Three-dimensional assembled active material from two-dimensional semiconductor flakes for optoelectronic devices
US-2019341249-A1 · Nov 7, 2019 · US
Porous plate-shaped filler, method for producing same, and heat insulation film
US-10464287-B2 · Nov 5, 2019 · US
Heat-insulation film, and heat-insulation-film structure
US-10385801-B2 · Aug 20, 2019 · US
Flakes with undulate borders and methods of forming thereof
US-2019249013-A1 · Aug 15, 2019 · US
Hexagonal boron nitride structures
US-2019202696-A1 · Jul 4, 2019 · US
Alumina sintered body and base substrate for optical device
US-10336625-B2 · Jul 2, 2019 · US
Method for producing transparent alumina sintered body
US-10315957-B2 · Jun 11, 2019 · US
Flakes with undulate borders and method of forming thereof
US-10308812-B2 · Jun 4, 2019 · US
Near-infrared absorbing fine particle dispersion liquid, near-infrared absorbing fine particle dispersion body, near-infrared absorbing transparent substrate, near-infrared absorbing laminated transparent substrate
US-2019161361-A1 · May 30, 2019 · US
Positive Electrode Active Material For Secondary Battery, Method Of Preparing The Same, And Secondary Battery Including The Positive Electrode Active Material
US-2019157658-A1 · May 23, 2019 · US
Boron Nitride Agglomerates, Method of Production Thereof and Use Thereof
US-2019092694-A1 · Mar 28, 2019 · US
Positive electrode active material for secondary battery, method of preparing the same, and secondary battery including the positive electrode active material
US-10243201-B2 · Mar 26, 2019 · US
Method for producing a plate-like alumina power
US-10221076-B2 · Mar 5, 2019 · US
Super-flexible high thermal conductive grapheme film and preparation method thereof
US-2019023575-A1 · Jan 24, 2019 · US
Boron nitride agglomerates, method of production and use thereof
US-10173931-B2 · Jan 8, 2019 · US
Titanium dioxide fine particle-dispersed composite particles and cosmetic
US-2019000726-A1 · Jan 3, 2019 · US
Preparation of suspensions
US-10167203-B2 · Jan 1, 2019 · US
Shaped abrasive particles with low roundness factor
US-10137556-B2 · Nov 27, 2018 · US
Method for manufacturing hexagonal plate-shaped zinc oxide particles
US-10093550-B2 · Oct 9, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01P2004/22?
- CPC C01P2004/22 is the Cooperative Patent Classification code for “with a polygonal circumferential shape.”
- How many patents are filed under CPC C01P2004/22 (with a polygonal circumferential shape)?
- Our database includes 140 publications tagged with this CPC code.
- Is patent activity under CPC C01P2004/22 growing?
- Publication counts under this code: 24 in 2024 vs 3 in 2025 (latest complete years).