Patents
US 12234059 B2: Method of forming a paper container and related materials
- Granted
- 2025-02-25
- Filed
- 2021-10-05 application 17494430
- Type
- Utility · 53 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Materials for coating paper sleeve blanks are provided, wherein the paper sleeve blank includes a multilayer coating. The multilayer coating includes a barrier layer and a top coat. At least two polymeric layers, including a top coat, are added to one side of the paper sleeve blank and the bottom blank. A container forming machine wraps and seals the multilayer coated paper sleeve blank to the coated bottom blank.
Source: PVGPATDIS, file of 2026-04-10 (ipg250225.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 |
|---|---|---|---|---|
| Mingyang Zhao | Kansas City, MO | 6 | PVGPATDIS, file of 2026-04-10 | |
| Daniel Martin | Midland, MI | 18 | PVGPATDIS, file of 2026-04-10 | |
| Samuel Eric DeFreese | Lansing, MI | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| 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 | B65D3/06 | PVGPATDIS, file of 2026-04-10 |
| B31B | Making containers of paper, cardboard or material worked in a manner analogous to paper | B31B50/16 | PVGPATDIS, file of 2026-04-10 |
| D21H | Pulp compositions; preparation thereof not covered by subclasses d21c or d21d; impregnating or coating of paper; treatment of finished paper not covered by class b31 or subclass d21g; paper not otherwise provided for | D21H19/20 | 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 |
|---|---|---|---|---|---|
| 2021-10-05 | Assignment Assignment of assignor's interest | DEFREESE, SAMUEL ERIC signed 2021-09-30 MARTIN, DANIEL PETER signed 2021-09-30 ZHAO, MINGYANG signed 2021-09-30 | DART CONTAINER CORPORATION MASON, MI | 57705/947 | 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.