Patents
US 11952742 B2: Lip for excavating bucket
- Granted
- 2024-04-09
- Filed
- 2020-03-27 application 16832185
- Type
- Utility · 9 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A cast lip for an excavating bucket composed of a ferrous alloy having at least seven percent chromium by weight, 3%-6% nickel by weight, and ≤0.12% carbon by weight, and a primarily martensitic structure.
Source: PVGPATDIS, file of 2026-04-10 (ipg240409.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| ESCO GROUP LLC 117 patents | US company or organization | Portland, OR | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Robin K. Churchill | Beaverton, OR | 6 | PVGPATDIS, file of 2026-04-10 | |
| Michael B. Roska | Portland, OR | 17 | PVGPATDIS, file of 2026-04-10 | |
| Ulf Daniel Widlund | Not reported | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| E02F | Dredging; soil-shifting | E02F3/60 | PVGPATDIS, file of 2026-04-10 |
| C21D | Modifying the physical structure of ferrous metals; general devices for heat treatment of ferrous or non-ferrous metals or alloys; making metal malleable, e.g. by decarburisation or tempering | C21D6/004 | PVGPATDIS, file of 2026-04-10 |
| C22C | Alloys | C22C38/02 | 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 |
|---|---|---|---|---|---|
| 2024-03-08 | Assignment Assignment of assignor's interest | CHURCHILL, ROBIN K. signed 2019-07-18 ROSKA, MICHAEL B. signed 2019-07-16 WIDLUND, ULF D. signed 2019-08-01 | ESCO GROUP LLC PORTLAND, OR | 66704/707 | 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.