Patents
US 11579128 B2: Activatable temperature indicator with time delay
- Granted
- 2023-02-14
- Filed
- 2019-05-10 application 16409082
- Type
- Utility · 23 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Disclosed herein are delayed reaction threshold temperature indicators and methods of making and activating the same, the delayed reaction threshold temperature indicators including a first substrate, first and second layers, and a housing secured to the substrate. The first layer includes a first reactant and an optional meltable polymer, and the second layer includes a meltable polymer and a second reactant. The meltable polymer is configured to keep the first and second reactants from interacting with each other. When exposed to temperatures at and/or above a desired threshold for a period of time, the meltable polymer melts and allows the first and second reactants to come into contact with each other, thereby producing a visual change in appearance.
Source: PVGPATDIS, file of 2026-04-10 (ipg230214.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| TEMPTIME CORPORATION 59 patents | US company or organization | Littleton, NJ | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Mohannad Abdo | Clifton, NJ | 51 | PVGPATDIS, file of 2026-04-10 | |
| John Newport | Chadds Ford, PA | 5 | PVGPATDIS, file of 2026-04-10 | |
| John Olson | Not reported | 9 | PVGPATDIS, file of 2026-04-10 | |
| Brian S. Huffman | Montgomery, NJ | 20 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01K | Measuring temperature; measuring quantity of heat; thermally-sensitive elements not otherwise provided for | G01K3/04 | PVGPATDIS, file of 2026-04-10 |
| G01N | Investigating or analysing materials by determining their chemical or physical properties | G01N31/229 | 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 |
| 2021-04-12 | Security interest Security interest Security interest | TEMPTIME CORPORATION signed 2021-03-31 | JPMORGAN CHASE BANK, N.A. BROOKLYN, NY | 55895/376 | PASDL, file of 2026-10-15 |
| 2021-03-05 | Release of security interest Release of security interest - 364 - day | JPMORGAN CHASE BANK, N.A. signed 2021-02-25 | ZEBRA TECHNOLOGIES CORPORATION LINCOLNSHIRE, IL LASER BAND, LLC LINCOLNSHIRE, IL TEMPTIME CORPORATION MORRIS PLAINS, NJ | 56036/590 | PASDL, file of 2026-10-15 |
| 2020-09-01 | Security interest Security interest Security interest | ZEBRA TECHNOLOGIES CORPORATION signed 2020-09-01 LASER BAND, LLC signed 2020-09-01 TEMPTIME CORPORATION signed 2020-09-01 | JPMORGAN CHASE BANK, N.A. BROOKLYN, NY | 53841/212 | PASDL, file of 2026-10-15 |
| 2019-05-17 | Assignment Assignment of assignor's interest | ABDO, MOHANNAD signed 2018-05-23 NEWPORT, JOHN signed 2018-05-22 OLSON, JOHN signed 2018-06-08 HUFFMAN, BRIAN signed 2018-06-08 | TEMPTIME CORPORATION MORRIS PLAINS, NJ | 49219/786 | 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.