Double-walled beverage container and method of forming the same
US-12319620-B2 · Jun 3, 2025 · US
Burning methods
Burning methods · 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 | C04B33/32 |
| Official title | Burning methods |
| Display label | Burning methods |
| Total patents | 60 |
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 | 7 |
| 2016 | 8 |
| 2017 | 5 |
| 2018 | 5 |
| 2019 | 10 |
| 2020 | 5 |
| 2021 | 5 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 8 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Raman markers
US-12280612-B2 · Apr 22, 2025 · US
Method for recycling coal liquefaction residue
US-12152212-B2 · Nov 26, 2024 · US
Preparation method of fly ash-based ceramic membrane support
US-12071377-B2 · Aug 27, 2024 · US
Preparation Method of Fly Ash-Based Ceramic Membrane Support
US-2024217879-A1 · Jul 4, 2024 · US
Biochar for stable solidification of heavy metals
US-2024174572-A1 · May 30, 2024 · US
Building materials and components and methods of making the same
US-2024150246-A1 · May 9, 2024 · US
Control process for controlling calcination of clays for the cement industry
US-2024150247-A1 · May 9, 2024 · US
Building materials and components and methods of making the same
US-11891337-B2 · Feb 6, 2024 · US
Highly dense red mud shields for x-ray and gamma-ray attenuation
US-2024018050-A1 · Jan 18, 2024 · US
Solar heat-reflective roofing granules, solar heat-reflective shingles and process for producing the same
US-11692351-B2 · Jul 4, 2023 · US
Method for recycling coal liquefaction residue
US-2023110950-A1 · Apr 13, 2023 · US
Double-walled beverage container and method of forming the same
US-2022250828-A1 · Aug 11, 2022 · US
Double-walled beverage container and method of forming the same
US-11338986-B2 · May 24, 2022 · US
Raman markers
US-2022097439-A1 · Mar 31, 2022 · US
Removal of water contaminants using enhanced ceramic filtration materials
US-2021370205-A1 · Dec 2, 2021 · US
Solar Heat-Reflective Roofing Granules, Solar Heat-Reflective Shingles and Process for Producing the Same
US-2021332590-A1 · Oct 28, 2021 · US
Solar heat-reflective roofing granules, solar heat-reflective shingles and process for producing the same
US-11053684-B2 · Jul 6, 2021 · US
Building materials and components and methods of making the same
US-2021061714-A1 · Mar 4, 2021 · US
Method for preparing low-density proppant by taking oil-based mud wastes as raw materials
US-2021040379-A1 · Feb 11, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B33/32?
- CPC C04B33/32 is the Cooperative Patent Classification code for “Burning methods.”
- How many patents are filed under CPC C04B33/32 (Burning methods)?
- Our database includes 60 publications tagged with this CPC code.
- Is patent activity under CPC C04B33/32 growing?
- Publication counts under this code: 8 in 2024 vs 2 in 2025 (latest complete years).