Patents
US 12352717 B2: Capacitance-based humidity and gas sensing RFID tags
- Granted
- 2025-07-08
- Filed
- 2022-07-18 application 17867031
- Type
- Utility · 18 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An RFID tag system includes an antenna, an integrated circuit electrically connected to the antenna, and a humidity or gas indicator being electrically connected to the antenna and the integrated circuit. The humidity or gas indicator includes a first electrode, a second electrode, a dielectric material, and a gap between the first electrode and the second electrode. At least a portion of the gap contains the dielectric material. The dielectric material is configured to have a change in its dielectric constant responsive to exposure to an environmental stimulus, which may be at least one of humidity or the presence of a gas. The change in the dielectric constant of the dielectric material changes a capacitance of the humidity or gas indicator, causing the integrated circuit to indicate the presence of the environmental stimulus.
Source: PVGPATDIS, file of 2026-04-10 (ipg250708.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| ZEBRA TECHNOLOGIES CORPORATION 1,077 patents | US company or organization | Lincolnshire, IL | ZEBRA TECHNOLOGIES CORP SEC filer FUZZY low confidence: same name (legal endings aside), one of each nationally | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Brian S. Huffman | Montgomery, NJ | 20 | PVGPATDIS, file of 2026-04-10 | |
| Deniz BOYU | Dover, NJ | 3 | PVGPATDIS, file of 2026-04-10 | |
| Thi N. Do | West Orange, NJ | 13 | PVGPATDIS, file of 2026-04-10 | |
| Mohannad Abdo | Clifton, NJ | 51 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01N | Investigating or analysing materials by determining their chemical or physical properties | G01N27/223 | PVGPATDIS, file of 2026-04-10 |
| A61B | Diagnosis; surgery; identification | A61B90/98 | 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 |
|---|---|---|---|---|---|
| 2025-05-29 | Merger Merger | TEMPTIME CORPORATION signed 2025-05-22 | ZEBRA TECHNOLOGIES CORPORATION LINCOLNSHIRE, IL | 71548/54 | PASDL, file of 2026-10-15 |
| 2022-07-29 | Assignment Assignment of assignor's interest | ABDO, MOHANNAD signed 2022-07-18 BOYU, DENIZ signed 2022-07-18 DO, THI N. signed 2022-07-18 HUFFMAN, BRIAN S. signed 2022-07-18 | TEMPTIME CORPORATION MORRIS PLAINS, NJ | 60673/821 | 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.