Patents
US 11584838 B2: Polyolefin-based composition for a lid and methods of making and using
- Granted
- 2023-02-21
- Filed
- 2018-10-02 application 16150036
- Type
- Utility · 24 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Aspects of the present disclosure relate to a polyolefin composition and processes suitable for use in forming a lid for a hot food or beverage container that has a stiffness comparable to a similar lid made using high impact polystyrene and a density less than water at 23° C.
Source: PVGPATDIS, file of 2026-04-10 (ipg230221.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Dart Container Corporation 48 patents | US company or organization | Mason, 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 | |
| ROBERT ALLAN BRUBAKER | Mason, MI | 5 | PVGPATDIS, file of 2026-04-10 | |
| JACOB CHRISTOPHER PURCELL | Howell, MI | 5 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C08J | Working-up; general processes of compounding; after-treatment not covered by subclasses c08b, c08c, c08f, c08g or c08h | C08J9/0066 | PVGPATDIS, file of 2026-04-10 |
| B65D | Containers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers; accessories, closures, or fittings therefor; packaging elements; packages | B65D43/0202 | PVGPATDIS, file of 2026-04-10 |
| B32B | Layered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form | B32B27/20 | 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 |
|---|---|---|---|---|---|
| 2018-10-03 | Assignment Assignment of assignor's interest | LI, CHENGTAO signed 2018-09-25 PURCELL, JACOB CHRISTOPHER signed 2018-09-25 BRUBAKER, ROBERT ALLAN signed 2018-09-26 | DART CONTAINER CORPORATION MASON, MI | 47044/800 | 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.