Patents
US 10992325 B2: Open cavity system for directed amplification of acoustic signals
- Granted
- 2021-04-27
- Filed
- 2018-09-04 application 16121059
- Type
- Utility · 40 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An apparatus is provided for transmission of acoustic signals between a transmitter and a receiver. The apparatus includes an electrical signal generator for generating low frequency electrical signals. The apparatus also includes a transmitter comprising a first retroreflector having a first array of subwavelength retroreflective elements at one end of an open cavity for transmitting the low frequency electrical signals and a first electroacoustic transducer adjacent to the first retroreflector for converting the low frequency electrical signals to acoustic signals. The apparatus further includes a receiver comprising a second retroreflector having a second array of subwavelength retroreflective elements at an opposite end of the open cavity, the acoustic signals being in form of a beam directed toward the receiver.
Source: PVGPATDIS, file of 2026-04-10 (ipg210427.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Elwha LLC 1,209 patents | US company or organization | Bellevue, WA | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Yaroslav A. Urzhumov | Bellevue, WA | 124 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H04B | Transmission | H04B1/0458 | PVGPATDIS, file of 2026-04-10 |
| G08C | Transmission systems for measured values, control or similar signals | G08C23/02 | PVGPATDIS, file of 2026-04-10 |
| H01Q | Antennas, i.e. radio aerials | H01Q1/36 | PVGPATDIS, file of 2026-04-10 |
| H03F | Amplifiers | H03F1/02 | 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 |
|---|---|---|---|---|---|
| 2024-08-20 | Assignment Assignment of assignor's interest | INVENTION SCIENCE FUND II, LLC signed 2024-06-28 | METAVC PATENT HOLDING COMPANY SISTERS, OR | 68723/735 | PASDL, file of 2026-10-15 |
| 2024-08-20 | Assignment Assignment of assignor's interest | ELWHA LLC signed 2024-06-28 | INVENTION SCIENCE FUND II, LLC BELLEVUE, WA | 68723/636 | PASDL, file of 2026-10-15 |
| 2018-09-06 | Assignment Assignment of assignor's interest | URZHUMOV, YAROSLAV signed 2018-09-04 | ELWHA LLC BELLEVUE, WA | 47025/24 | 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.