Patents
US 8936134 B2: Three/four step ladder with a curve about
- Granted
- 2015-01-20
- Filed
- 2013-08-19 application 13970152
- Type
- Utility · 2 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A three-step pool ladder having the capability to have a fourth step and/or a curve-about ladder apparatus.
Source: PVGPATDIS, file of 2026-04-10 (ipg150120.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Confer Plastics, Inc. 8 patents | US company or organization | North Tonawanda, NY | CONFER PLASTICS, INC. State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| David J. Lipniarski | North Tonawanda, NY | 10 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| E04H | Buildings or like structures for particular purposes; swimming or splash baths or pools; masts; fencing; tents or canopies, in general | E04H4/144 | 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 |
|---|---|---|---|---|---|
| 2013-11-25 | Assignment Assignment of assignor's interest | LIPNIARSKI, DAVID J. signed 2013-10-22 | CONFER PLASTICS, INC. NORTH TONAWANDA, NY | 31667/859 | 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.