Patents
US 12250520 B2: Capacitive sensor assembly and electrical circuit therefor
- Granted
- 2025-03-11
- Filed
- 2022-12-31 application 18092285
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A capacitive sensor assembly is disclosed, including a capacitive motor coupled to a charge pump circuit via a low pass filter, and a frontend amplifier circuit having an input coupled to the capacitive motor interface and an output coupled to an output of the electrical circuit. An injection current source (ICS) is coupled to the charge pump circuit output and configured to control voltage across a diode-based resistive element of the low pass filter during a transient startup phase of the charge pump circuit, wherein a settling time of the charge pump is reduced.
Source: PVGPATDIS, file of 2026-04-10 (ipg250311.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Knowles Electronics, LLC 414 patents | US company or organization | Itasca, IL | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Shenjie Wang | Olten, CH | 2 | PVGPATDIS, file of 2026-04-10 | |
| Rene Scheuner | Gutenswil, CH | 4 | PVGPATDIS, file of 2026-04-10 | |
| Mark Niederberger | Einsiedeln, CH | 18 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H04R | Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; electric hearing aids; public address systems | H04R19/04 | PVGPATDIS, file of 2026-04-10 |
| H03F | Amplifiers | H03F3/45475 | 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 |
|---|---|---|---|---|---|
| 2022-12-31 | Assignment Assignment of assignor's interest | NIEDERBERGER, MARK signed 2022-12-27 WANG, SHENJIE signed 2022-12-29 SCHEUNER, RENÉ signed 2022-12-30 | KNOWLES ELECTRONICS, LLC ITASCA, IL | 62248/885 | 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.