Patents
US 8162567 B2: Water retention cell structures
- Granted
- 2012-04-24
- Filed
- 2010-04-20 application 12799147
- Type
- Utility · 13 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An assembly of hollow frustum-shaped bodies arranged and supported on a horizontal support structure is used to form a core structure for water retention cells. The assemblies are arranged in alternately inverted layers with the ends of the frustum-shaped bodies interconnected to form vertical support columns which are horizontally stabilized by horizontal support structure.
Source: PVGPATDIS, file of 2026-04-10 (ipg120424.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Polyguard Products, Inc. 7 patents | US company or organization | Ennis, TX | POLYGUARD PRODUCTS, 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 |
|---|---|---|---|---|
| Michael B. Obermeyer | Charlotte, NC | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| E03F | Sewers; cesspools | E03F1/002 | 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 |
|---|---|---|---|---|---|
| 2010-04-20 | Assignment Assignment of assignor's interest | OBERMEYER, MICHAL B. signed 2010-04-12 | POLYGUARD PRODUCTS, INC. ENNIS, TX | 24297/765 | 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.