Patents
US 12456635 B2: Rotatable electrochemical etching cell
- Granted
- 2025-10-28
- Filed
- 2024-12-13 application 18980720
- Type
- Utility · 16 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
The present disclosure provides a reaction chamber, and methods of using the same, wherein the reaction chamber includes a mesh cathode, a first anode, a second anode, and a reaction chamber body, wherein the reaction chamber body is hollow and has a first opening and a second opening, where semiconductor wafers to be electrochemically etched can be sealed. One benefit of the reaction chamber and methods disclosed herein can be allowing for numerous etching operations to be performed with minimal or no contact of the operator with the etching solution, such as hydrofluoric acid.
Source: PVGPATDIS, file of 2026-04-10 (ipg251028.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| The Methodist Hospital 51 patents | US company or organization | Houston, TX | THE METHODIST HOSPITAL State business registration EXACT high confidence: identical full name and state THE METHODIST HOSPITAL Nonprofit EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Xuewu Liu | Sugar Land, TX | 14 | PVGPATDIS, file of 2026-04-10 | |
| Gauri Bhave | Richmond, TX | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C25B | Electrolytic or electrophoretic processes for the production of compounds or non-metals; apparatus therefor | C25B9/19 | PVGPATDIS, file of 2026-04-10 |
| H10P | Generic processes or apparatus for the manufacture or treatment of devices covered by class h10 | H10P72/0426 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2025-09-09 | Government interest Confirmatory license | METHODIST HOSPITAL RESEARCH INSTITUTE signed 2025-05-20 | UNITED STATES GOVERNMENT FORT DETRICK, MD | 72195/839 | ECORSEXC, file of 2026-09-25 |
| 2025-01-09 | Assignment Assignment of assignor's interest | BHAVE, GAURI signed 2022-10-05 LIU, XUEWU signed 2022-10-05 | THE METHODIST HOSPITAL HOUSTON, TX | 69804/368 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
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.