Autoclave method for making ferric oxide
US-12257570-B2 · Mar 25, 2025 · US
with a prismatic shape
with a prismatic 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 | C01P2004/11 |
| Official title | with a prismatic shape |
| Display label | with a prismatic shape |
| Total patents | 27 |
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 | 1 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 1 |
| 2023 | 2 |
| 2024 | 13 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Autoclave method for making ferric oxide
US-2024408581-A1 · Dec 12, 2024 · US
Ferric oxide synthesis method
US-12145134-B1 · Nov 19, 2024 · US
Method for forming ferric oxide microparticles
US-12145135-B1 · Nov 19, 2024 · US
Ferric oxide synthesis method
US-2024375088-A1 · Nov 14, 2024 · US
Method for forming ferric oxide microparticles
US-2024375089-A1 · Nov 14, 2024 · US
Methods for catalytically reducing a nitro compound
US-12102988-B2 · Oct 1, 2024 · US
Method for reducing nitrogenous phenols
US-12090469-B2 · Sep 17, 2024 · US
Method for reducing a nitro compound to an amine compound
US-12090470-B2 · Sep 17, 2024 · US
Method for treating an ammonium salt
US-12076708-B2 · Sep 3, 2024 · US
Method for reducing nitrogenous phenols
US-2024246064-A1 · Jul 25, 2024 · US
Method for reducing a nitro compound to an amine compound
US-2024246065-A1 · Jul 25, 2024 · US
Catalytic reduction of a nitro compound to an amine compound
US-12042784-B1 · Jul 23, 2024 · US
Catalytic reduction of a nitro compound to an amine compound
US-2024226855-A1 · Jul 11, 2024 · US
Methods for catalytically reducing a nitro compound
US-2023201807-A1 · Jun 29, 2023 · US
Morphologically controlled synthesis of ferric oxide nano/micro particles
US-11628423-B2 · Apr 18, 2023 · US
Method of producing apatite crystal, and apatite crystal
US-10851472-B2 · Dec 1, 2020 · US
Morphologically controlled synthesis of ferric oxide nano/micro particles
US-2019366305-A1 · Dec 5, 2019 · US
Morphologically and size uniform monodisperse particles and their shape-directed self-assembly
US-2019249081-A1 · Aug 15, 2019 · US
Morphologically and size uniform monodisperse particles and their shape-directed self-assembly
US-10273407-B2 · Apr 30, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01P2004/11?
- CPC C01P2004/11 is the Cooperative Patent Classification code for “with a prismatic shape.”
- How many patents are filed under CPC C01P2004/11 (with a prismatic shape)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC C01P2004/11 growing?
- Publication counts under this code: 13 in 2024 vs 1 in 2025 (latest complete years).