Patents
US 12590849 B2: Activatable warming indicator without dye
- Granted
- 2026-03-31
- Filed
- 2021-03-05 application 17193741
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A temperature exposure indicator includes a reservoir of meltable material having a melting point at an activation threshold of the temperature exposure indicator. The temperature exposure indicator also includes a light scattering material having voids and an indicia overlayed by the light scattering material such that the indicia is initially obscured by the light scattering material prior to the meltable material being exposed to a temperature above the activation threshold. The reservoir is in fluid communication with the light scattering material, such that the meltable material, when exposed to a temperature at or above the activation threshold, is configured to melt and flow into the voids of the light scattering material thereby causing the light scattering material to transition from an obscuring form to a non-obscuring form so that the indicia is viewable through the light scattering material.
Source: PTBLXML, file of 2026-03-31 (ipgb20260331.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 | PTBLXML, file of 2026-03-31 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| John Olson | Dayton, NJ | 9 | PTBLXML, file of 2026-03-31 | |
| Eric W. Liberato | Pequannock, NJ | 16 | PTBLXML, file of 2026-03-31 | |
| Mohannad Abdo | Clifton, NJ | 51 | PTBLXML, file of 2026-03-31 | |
| Steven Feldman | Morristown, NJ | PTBLXML, file of 2026-03-31 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01K | Measuring temperature; measuring quantity of heat; thermally-sensitive elements not otherwise provided for | G01K11/12 | PTBLXML, file of 2026-03-31 |
| B32B | Layered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form | B32B27/08 | PTBLXML, file of 2026-03-31 |
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 |
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.