Gaseous seal injection in a wellbore
US-2019368305-A1 · Dec 5, 2019 · US
for squeeze cementing, e.g. for repairing
for squeeze cementing, e.g. for repairing · 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 | C09K8/428 |
| Official title | {for squeeze cementing, e.g. for repairing} |
| Display label | for squeeze cementing, e.g. for repairing |
| Total patents | 112 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 17 |
| 2017 | 10 |
| 2018 | 11 |
| 2019 | 19 |
| 2020 | 8 |
| 2021 | 10 |
| 2022 | 5 |
| 2023 | 9 |
| 2024 | 5 |
| 2025 | 6 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fracturing treatments in subterranean formation using inorganic cements and electrically controlled propellants
US-2019368327-A1 · Dec 5, 2019 · US
Compositions and Methods for Sealing Off Flow Channels in Contact with Wet Cement
US-2019338178-A1 · Nov 7, 2019 · US
Self-repairing cements
US-10457848-B2 · Oct 29, 2019 · US
Self-repairing cement polymer composites and processes of making and using same
US-10370577-B2 · Aug 6, 2019 · US
Encapsulated polymer nanocomposite for efficient crack repair and monitoring of cement, rock, and other brittle materials
US-10370305-B1 · Aug 6, 2019 · US
Methods for Determining Reactive Index For Cementitious Components, Associated Compositions, And Methods of Use
US-2019225540-A1 · Jul 25, 2019 · US
Engineering methodology to treat severe loss zones with thixotropic cement system
US-10344544-B2 · Jul 9, 2019 · US
Wellbore isolation devices with degradable slip assemblies with slip inserts
US-2019093450-A1 · Mar 28, 2019 · US
Degradable wellbore isolation devices with degradable sealing balls
US-10227841-B2 · Mar 12, 2019 · US
Method for treating subterranean formations
US-10202535-B2 · Feb 12, 2019 · US
Cement compositions with adjustable mechanical properties
US-2019040297-A1 · Feb 7, 2019 · US
Wellbore isolation devices with degradable slip assemblies with slip inserts
US-10174578-B2 · Jan 8, 2019 · US
Maleic anhydride polymers and methods of treating subterranean formations
US-10160902-B2 · Dec 25, 2018 · US
Set on demand cement compositions for curing fluid loss
US-10081755-B2 · Sep 25, 2018 · US
Cement Activator Composition for Treatment of Subterranean Formations
US-2018230357-A1 · Aug 16, 2018 · US
Pendant epoxide polymers and methods of treating subterranean formations
US-10005930-B2 · Jun 26, 2018 · US
Degradable wellbore isolation devices with large flow areas
US-9982506-B2 · May 29, 2018 · US
Compositions and methods for sealing off flow channels in contact with set cement
US-2018127635-A1 · May 10, 2018 · US
Methods for servicing subterranean wells
US-9950952-B2 · Apr 24, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K8/428?
- CPC C09K8/428 is the Cooperative Patent Classification code for “for squeeze cementing, e.g. for repairing.”
- How many patents are filed under CPC C09K8/428 (for squeeze cementing, e.g. for repairing)?
- Our database includes 112 publications tagged with this CPC code.
- Is patent activity under CPC C09K8/428 growing?
- Publication counts under this code: 5 in 2024 vs 6 in 2025 (latest complete years).