Patents
US 10940677 B2: Thermoplastic membranes containing expandable graphite
- Granted
- 2021-03-09
- Filed
- 2016-10-17 application 15295664
- Type
- Utility · 22 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A multi-layered membrane comprising a first thermoplastic first layer and a second thermoplastic layer, where the second layer includes expandable graphite.
Source: PVGPATDIS, file of 2026-04-10 (ipg210309.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Firestone Building Products Company, LLC 136 patents | US company or organization | Indianapolis, IN | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Michael J. Hubbard | Anderson, IN | 62 | PVGPATDIS, file of 2026-04-10 | |
| Wensheng Zhou | Carmel, IN | 36 | PVGPATDIS, file of 2026-04-10 | |
| Joseph CARR | Indianapolis, IN | 28 | 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 | B32B27/205 | PVGPATDIS, file of 2026-04-10 |
| E04D | Roof coverings; sky-lights; gutters; roof-working tools | E04D5/06 | PVGPATDIS, file of 2026-04-10 |
| Y10T | Technical subjects covered by former us classification | Y10T428/31909 | 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 |
|---|---|---|---|---|---|
| 2025-08-29 | Assignment Assignment of assignor's interest | HOLCIM TECHNOLOGY LTD signed 2025-06-01 | AMRIZE TECHNOLOGY SWITZERLAND LLC ZUG | 72740/505 | ECORSEXC, file of 2026-09-25 |
| 2022-07-06 | Assignment Assignment of assignor's interest | FIRESTONE BUILDING PRODUCTS COMPANY, LLC signed 2022-04-04 | HOLCIM TECHNOLOGY LTD 6300 ZUG | 61034/752 | ECORSEXC, file of 2026-09-25 |
| 2016-10-17 | Assignment Assignment of assignor's interest | CARR, JOSEPH signed 2015-06-11 HUBBARD, MICHAEL J signed 2015-06-11 ZHOU, WENSHENG signed 2015-06-11 | FIRESTONE BUILDING PRODUCTS CO., LLC INDIANAPOLIS, IN | 40034/406 | 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.