C04B 28/026
Oil shale cements
Official title: {Oil shale cements}
C04B28/026 (Oil shale cements) appears on 3 US grants and 3 published applications in this corpus.
Search patents in C04B- Granted patents
- 3
- Published applications
- 3
- Assignees
- 4
- Inventors
- 16
- Latest grant
- 5 Dec 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 1 |
By publication year.
Recent patents
- Oil shale semicoke adsorption inhibitor and application thereof in concrete preparation5 Dec 2023US 11,834,373 B2Gansu Road & Bridge Construction Group
- Additive for hydraulically setting compositions5 Jul 2022US 11,377,392 B2Construction Research & Technology GmbH
- Process for producing geopolymers3 Sep 2013US 8,523,998 B2Outotec Oyj
- Oil shale semicoke adsorption inhibitor and application thereof in concrete preparation17 Aug 2023US 2023/0257305 A1Gansu Road & Bridge Construction Group
- Additive for hydraulically setting compositions20 Feb 2020US 2020/0055784 A1Construction Research & Technology GmbH
- Process for producing geopolymers11 Oct 2012US 2012/0255462 A1Outotec Oyj
Most cited
By later US patents
No patent in this class has been cited by a later US patent yet.