Patents
US 11331887 B2: Polyolefin-based composition for a lid and methods of making and using
- Granted
- 2022-05-17
- Filed
- 2019-03-05 application 16292495
- Type
- Utility · 25 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Aspects of the present disclosure relate to compositions and processes suitable for use in forming a lid for a hot food or beverage container, the lid being made from a multi-layer sheet that includes a substrate layer and a cap layer made from polyolefin-based compositions. The lid has a density less than water at 23° C., allowing the lid to be recycled in a recycling stream.
Source: PVGPATDIS, file of 2026-04-10 (ipg220517.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Dart Container Corporation 48 patents | US company or organization | Big Rapids, MI | DART CONTAINER CORPORATION State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Chengtao Li | Novi, MI | 14 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B32B | Layered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form | B32B27/08 | PVGPATDIS, file of 2026-04-10 |
| C08L | Compositions of macromolecular compounds | C08L23/06 | PVGPATDIS, file of 2026-04-10 |
| C08K | Use of inorganic or non-macromolecular organic substances as compounding ingredients | C08K3/346 | 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 |
|---|---|---|---|---|---|
| 2019-03-05 | Assignment Assignment of assignor's interest | LI, CHENGTAO signed 2019-02-07 | DART CONTAINER CORPORATION MASON, MI | 48503/822 | 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.