Patents
US 9034778 B2: Fail safe protective wrapping
- Granted
- 2015-05-19
- Filed
- 2007-07-27 application 11881197
- Type
- Utility · 4 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Electrically conductive paths are positioned in and extend transversely across the width of the backing of strips of wrapping material. The electrically conductive paths provide means for conducting electrical current through spirally wrapped protective materials from the surrounding earth to voids formed adjacent the overlapped edges of the wrapping material and thus permit cathodic protection for pipe surfaces exposed to voids formed as a result of improper application or bonding failures of the wrapping material.
Source: PVGPATDIS, file of 2026-04-10 (ipg150519.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 |
|---|---|---|---|---|
| John W. Muncaster | Ennis, TX | 3 | PVGPATDIS, file of 2026-04-10 | |
| Richard Norsworthy | Dallas, TX | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B32B | Layered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form | B32B3/08 | PVGPATDIS, file of 2026-04-10 |
| Y10T | Technical subjects covered by former us classification | Y10T428/31815 | 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 |
|---|---|---|---|---|---|
| 2025-04-09 | Assignment Assignment of assignor's interest | PALMER, FRED signed 2025-04-07 | F & M PALMCO, LLC DETROIT, MI | 70788/577 | ECORSEXC, file of 2026-09-25 |
| 2007-07-27 | Assignment Assignment of assignor's interest | MUNCASTER, JOHN W. signed 2007-07-23 NORSWORTHY, RICHARD signed 2007-07-23 | POLYGUARD PRODUCTS, INC. ENNIS, TX | 19654/891 | 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.