Manufacturing method of ceramic formed body
US-2018354863-A1 · Dec 13, 2018 · US
by adding chemical blowing agents
by adding chemical blowing agents · 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 | C04B38/02 |
| Official title | by adding chemical blowing agents |
| Display label | by adding chemical blowing agents |
| Total patents | 272 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 17 |
| 2017 | 18 |
| 2018 | 34 |
| 2019 | 51 |
| 2020 | 52 |
| 2021 | 26 |
| 2022 | 17 |
| 2023 | 14 |
| 2024 | 22 |
| 2025 | 14 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Settable, form-filling loss circulation control compositions comprising in situ foamed non-hydraulic sorel cement systems and method of use
US-10150905-B1 · Dec 11, 2018 · US
Self-healing cement comprising polymer capable of swelling in gaseous environment
US-10125302-B2 · Nov 13, 2018 · US
Multi-chamber film bag and use thereof
US-2018319567-A1 · Nov 8, 2018 · US
Dispersant in cement formulations for oil and gas wells
US-2018282216-A1 · Oct 4, 2018 · US
Rare earth-containing compounds to enhance performance of downhole treatment compositions
US-10087354-B2 · Oct 2, 2018 · US
Nanoclay-enhanced cement composition for deep well treatment
US-10065890-B2 · Sep 4, 2018 · US
Spacer fluids and cement slurries that include surfactants
US-2018223168-A1 · Aug 9, 2018 · US
Emulsified drilling fluids and methods of making and use thereof
US-2018223164-A1 · Aug 9, 2018 · US
Spacer fluid compositions that include surfactants
US-2018223169-A1 · Aug 9, 2018 · US
Anti-bit balling drilling fluids, and methods of making and use thereof
US-2018223160-A1 · Aug 9, 2018 · US
Enhanced filtration control packages, wellbore servicing fluids utilizing the same, and methods of maintaining the structure of a wellbore
US-2018223156-A1 · Aug 9, 2018 · US
Development of anti-bit balling fluids
US-2018223162-A1 · Aug 9, 2018 · US
Lubricants for water-based drilling fluids
US-2018223153-A1 · Aug 9, 2018 · US
Cement slurries, cured cement and methods of making and use thereof
US-2018222797-A1 · Aug 9, 2018 · US
Lightweight foamed cement, cement board, and methods for making same
US-10040725-B2 · Aug 7, 2018 · US
Porous cement composition for propping fractures open
US-10011764-B2 · Jul 3, 2018 · US
Method for making a lightweight gypsum composition with internally generated foam and products made from same
US-2018099908-A1 · Apr 12, 2018 · US
Building material and method for producing building material
US-2018086023-A1 · Mar 29, 2018 · US
Reinforced building block made of autoclaved aerated concrete (aac)
US-2017369372-A1 · Dec 28, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B38/02?
- CPC C04B38/02 is the Cooperative Patent Classification code for “by adding chemical blowing agents.”
- How many patents are filed under CPC C04B38/02 (by adding chemical blowing agents)?
- Our database includes 272 publications tagged with this CPC code.
- Is patent activity under CPC C04B38/02 growing?
- Publication counts under this code: 22 in 2024 vs 14 in 2025 (latest complete years).