Patents
US 9682534 B1: Chemical resistant waterproofing membranes
- Granted
- 2017-06-20
- Filed
- 2016-02-05 application 15017088
- Type
- Utility · 7 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Chemical resistant waterproofing laminate membranes are formed by bonding an aluminum film or foil between two substantially vapor-impervious films with a chemical resistant bonding agent or adhesive such as cured liquid silicone rubber. The chemical resistant bonding agent resists delamination and deterioration of the laminate membrane caused by solvents and chemically reactive materials found in brownfield sites.
Source: PVGPATDIS, file of 2026-04-10 (ipg170620.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 |
|---|---|---|---|---|
| Nathan E. Young | Ennis, TX | 1 | PVGPATDIS, file of 2026-04-10 | |
| Steven H. Williams | Granville, OH | 1 | PVGPATDIS, file of 2026-04-10 | |
| Roy E. Shaffer | Easton, PA | 1 | PVGPATDIS, file of 2026-04-10 | |
| Brian Shaffer | Easton, PA | 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 | B32B15/09 | PVGPATDIS, file of 2026-04-10 |
| E04B | General building constructions; walls, e.g. partitions; roofs; floors; ceilings; insulation or other protection of buildings | E04B1/66 | 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 |
|---|---|---|---|---|---|
| 2016-02-05 | Assignment Assignment of assignor's interest | SHAFFER, BRIAN M. signed 2016-01-25 SHAFFER, ROY E. signed 2016-01-25 WILLIAMS, STEVEN H. signed 2016-01-26 YOUNG, NATHAN E. signed 2016-02-05 | POLYGUARD PRODUCTS, INC. ENNIS, TX | 37678/234 | 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.