| Utility: Hydrofining catalyst, its preparation and application thereof Filling date: 26 Sep 2025 Issue date: 13 Sep 2022 | 9 Apr 2019 | 13 Sep 2022 |
| Utility: Ester polymer, preparation method therefor and use thereof Filling date: 26 Sep 2025 Issue date: 13 Sep 2022 | 16 May 2018 | 13 Sep 2022 |
| Utility: Process of cultivating microalgae and a joint method of same with a denitration process Filling date: 26 Sep 2025 Issue date: 6 Sep 2022 | 17 Mar 2015 | 6 Sep 2022 |
| Utility: Catalytic cracking process for producing isobutane and/or light aromatics in high yield Filling date: 26 Sep 2025 Issue date: 30 Aug 2022 | 22 Oct 2018 | 30 Aug 2022 |
| Utility: Washing and desalting device, washing and desalting method, desalting and dehydrating system, and desalting and dehydrating method Filling date: 26 Sep 2025 Issue date: 2 Aug 2022 | 9 Oct 2018 | 2 Aug 2022 |
| Utility: Olefin polymerization catalyst comprising cyclotriveratrylene and derivatives thereof Filling date: 26 Sep 2025 Issue date: 2 Aug 2022 | 19 Jul 2018 | 2 Aug 2022 |
| Utility: Method and system for detecting downhole magnetic interference on measurement while drilling operations Filling date: 26 Sep 2025 Issue date: 28 Jun 2022 | 14 May 2020 | 28 Jun 2022 |
| Utility: Process for converting inferior feedstock oil Filling date: 26 Sep 2025 Issue date: 21 Jun 2022 | 17 Oct 2016 | 21 Jun 2022 |
| Utility: Mud pulser and method for operating thereof Filling date: 26 Sep 2025 Issue date: 14 Jun 2022 | 30 Apr 2020 | 14 Jun 2022 |
| Utility: Amine-based polymer, a preparation process thereof and use thereof Filling date: 26 Sep 2025 Issue date: 14 Jun 2022 | 31 May 2019 | 14 Jun 2022 |
| Utility: Monolithic catalyst used for carbon dioxide hydrogenation reaction and method for preparing same Filling date: 26 Sep 2025 Issue date: 24 May 2022 | 21 Mar 2017 | 24 May 2022 |
| Utility: Computer-implemented method and system for removing low frequency and low wavenumber noises to generate an enhanced image Filling date: 26 Sep 2025 Issue date: 17 May 2022 | 30 Jun 2020 | 17 May 2022 |
| Utility: Magnesium alkoxide particle and application thereof Filling date: 26 Sep 2025 Issue date: 17 May 2022 | 26 Oct 2017 | 17 May 2022 |
| Utility: Catalyst component for olefin polymerization, catalyst, and use thereof Filling date: 26 Sep 2025 Issue date: 10 May 2022 | 22 Sep 2017 | 10 May 2022 |
| Utility: Method and system that uses an anisotropy parameter to generate high-resolution time-migrated image gathers for reservoir characterization, and interpretation Filling date: 26 Sep 2025 Issue date: 3 May 2022 | 31 Aug 2020 | 3 May 2022 |
| Utility: Desulfurization catalyst, its production and application thereof Filling date: 26 Sep 2025 Issue date: 3 May 2022 | 31 Oct 2017 | 3 May 2022 |
| Utility: Halogen-containing compound and use thereof, catalyst composition, and ethylene oligomerization, trimerization and tetramerization methods Filling date: 26 Sep 2025 Issue date: 19 Apr 2022 | 30 Oct 2019 | 19 Apr 2022 |
| Utility: Surfactant composition and preparation method therefor and application thereof Filling date: 26 Sep 2025 Issue date: 29 Mar 2022 | 21 Nov 2019 | 29 Mar 2022 |
| Utility: Computer-implemented method for high speed multi-source loading and retrieval of wavefields employing finite difference models Filling date: 26 Sep 2025 Issue date: 22 Mar 2022 | 30 Jun 2020 | 22 Mar 2022 |
| Utility: Cu-based catalyst, its preparation process and use thereof Filling date: 26 Sep 2025 Issue date: 1 Mar 2022 | 14 Nov 2018 | 1 Mar 2022 |
| Utility: Tool for opening sliding sleeve Filling date: 26 Sep 2025 Issue date: 15 Feb 2022 | 13 Jan 2017 | 15 Feb 2022 |
| Utility: Composite catalyst and preparation method therefor Filling date: 26 Sep 2025 Issue date: 8 Feb 2022 | 20 Apr 2020 | 8 Feb 2022 |
| Utility: Liquid taking device and liquid taking method Filling date: 26 Sep 2025 Issue date: 8 Feb 2022 | 6 Mar 2020 | 8 Feb 2022 |
| Utility: Device for jet packing and fracturing and tubular column comprising same Filling date: 26 Sep 2025 Issue date: 1 Feb 2022 | 13 Jan 2017 | 1 Feb 2022 |
| Utility: Method for controlling MWD tool in bottom hole assembly Filling date: 26 Sep 2025 Issue date: 18 Jan 2022 | 11 Jul 2020 | 18 Jan 2022 |
| Utility: Method for controlling a drilling system Filling date: 26 Sep 2025 Issue date: 18 Jan 2022 | 11 Jul 2020 | 18 Jan 2022 |
| Utility: Carbon-coated transition metal nanocomposite material, preparation and application thereof Filling date: 26 Sep 2025 Issue date: 18 Jan 2022 | 27 Jul 2018 | 18 Jan 2022 |
| Utility: Heat transfer tube and cracking furnace using the same Filling date: 26 Sep 2025 Issue date: 4 Jan 2022 | 26 Dec 2018 | 4 Jan 2022 |
| Utility: Method of flue gas denitrification Filling date: 26 Sep 2025 Issue date: 4 Jan 2022 | 31 Aug 2017 | 4 Jan 2022 |
| Utility: Alumina supporter material and preparation method thereof, hydrogenation catalyst and residual oil hydrogenation processing Filling date: 26 Sep 2025 Issue date: 28 Dec 2021 | 26 Oct 2018 | 28 Dec 2021 |
| Utility: Surfactant composition and preparation method therefor and application thereof Filling date: 26 Sep 2025 Issue date: 7 Dec 2021 | 21 Nov 2019 | 7 Dec 2021 |
| Utility: Central storage unit for a measuring-while-drilling assembly for an oil drilling system Filling date: 26 Sep 2025 Issue date: 30 Nov 2021 | 19 Sep 2019 | 30 Nov 2021 |
| Utility: Anionic-cationic-nonionic surfactant, production and use thereof Filling date: 26 Sep 2025 Issue date: 30 Nov 2021 | 11 Jul 2019 | 30 Nov 2021 |
| Utility: Autonomous through-tubular downhole shuttle Filling date: 26 Sep 2025 Issue date: 23 Nov 2021 | 13 Jun 2019 | 23 Nov 2021 |
| Utility: Modified Y-type molecular sieve and preparation method thereof, hydrocracking catalyst and preparation method thereof, and method for hydrocracking hydrocarbon oil Filling date: 26 Sep 2025 Issue date: 23 Nov 2021 | 29 Nov 2017 | 23 Nov 2021 |
| Utility: Hydrogenation catalyst, its production and application thereof Filling date: 26 Sep 2025 Issue date: 2 Nov 2021 | 24 Apr 2017 | 2 Nov 2021 |
| Utility: Preparation of molecular sieve and treatment of silicon-containing wastewater therefrom Filling date: 26 Sep 2025 Issue date: 2 Nov 2021 | 28 Oct 2016 | 2 Nov 2021 |
| Utility: Computer-implemented method and system for small cave recognition using seismic reflection data Filling date: 26 Sep 2025 Issue date: 12 Oct 2021 | 17 Feb 2020 | 12 Oct 2021 |
| Utility: Tool for jet packing and fracturing and tubular column comprising same Filling date: 26 Sep 2025 Issue date: 12 Oct 2021 | 13 Jan 2017 | 12 Oct 2021 |
| Utility: Modified Y-type molecular sieve, catalytic cracking catalyst comprising the same, their preparation and application thereof Filling date: 26 Sep 2025 Issue date: 28 Sep 2021 | 20 Aug 2019 | 28 Sep 2021 |
| Utility: Independent high-speed sampling for an oil drilling system Filling date: 26 Sep 2025 Issue date: 7 Sep 2021 | 29 Mar 2019 | 7 Sep 2021 |
| Utility: Method for preparing hexadecahydropyrene Filling date: 26 Sep 2025 Issue date: 7 Sep 2021 | 30 Nov 2017 | 7 Sep 2021 |
| Utility: Molecular sieve SCM-14, a preparation process and use thereof Filling date: 26 Sep 2025 Issue date: 24 Aug 2021 | 31 Oct 2017 | 24 Aug 2021 |
| Utility: Molecular sieve, its preparation and application thereof Filling date: 26 Sep 2025 Issue date: 17 Aug 2021 | 11 Jul 2020 | 17 Aug 2021 |
| Utility: Process for producing ethylene Filling date: 26 Sep 2025 Issue date: 17 Aug 2021 | 3 Sep 2018 | 17 Aug 2021 |
| Utility: Preheating process and start-up process for the ammoxidation reaction Filling date: 26 Sep 2025 Issue date: 17 Aug 2021 | 9 Jul 2018 | 17 Aug 2021 |
| Utility: Feed gas feeding system for propylene ammoxidation reactor Filling date: 26 Sep 2025 Issue date: 3 Aug 2021 | 3 Jan 2018 | 3 Aug 2021 |
| Utility: Process and system for upgrading low-quality oils Filling date: 26 Sep 2025 Issue date: 3 Aug 2021 | 11 Sep 2017 | 3 Aug 2021 |
| Utility: Catalyst for producing light aromatics with heavy aromatics, method for preparing the catalyst, and use thereof Filling date: 26 Sep 2025 Issue date: 20 Jul 2021 | 20 Aug 2018 | 20 Jul 2021 |
| Utility: Magnesium modified Y-type molecular sieve, preparation thereof and catalyst comprising the same Filling date: 26 Sep 2025 Issue date: 6 Jul 2021 | 12 Feb 2018 | 6 Jul 2021 |
