Patents
US 12746488 B2: Downhole filter
- Granted
- 2026-09-29
- Filed
- 2025-01-31 application 19149883
- Type
- Utility · 15 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A work string including a chemical injection sub having a valve. The valve includes a housing, a bore extending along a longitudinal axis of the housing, a first port at a first axial location along the housing, a second port at a second axial location along the housing, a filter disposed within the bore, wherein the filter including an inlet at a first end and an outlet at a second end, and a floating device disposed within the filter, the floating device configured to allow a flow of fluid into the filter at the first end and to close the inlet based on an accumulation of debris within the filter.
Source: PTBLXML, file of 2026-09-29 (ipgb20260929.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Baker Hughes Oilfield Operations LLC 922 patents | US company or organization | Houston, TX | PTBLXML, file of 2026-09-29 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Zhi Yong He | Cypress, TX | 24 | PTBLXML, file of 2026-09-29 | |
| Vighnesh Sivan | Rosharon, TX | PTBLXML, file of 2026-09-29 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B01D | Separation | B01D29/902 | PTBLXML, file of 2026-09-29 |
| E21B | Earth or rock drilling; obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells | E21B43/08 | PTBLXML, file of 2026-09-29 |
| B33Y | Additive manufacturing, i.e. manufacturing of three-dimensional [3d] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3d printing, stereolithography or selective laser sintering | B33Y80/00 | PTBLXML, file of 2026-09-29 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.