Patents
US 11174364 B2: Process for producing isocyanate-based foam construction boards
- Granted
- 2021-11-16
- Filed
- 2016-12-03 application 15779887
- Type
- Utility · 8 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A process for producing a polyurethane or polyisocyanurate construction board, the process comprising: (i) providing an A-side reactant stream that includes an isocyanate-containing compound; (ii) providing a B-side reactant stream that includes a polyol, where the B-side reactant stream includes a blowing agent that includes a pentane and a blowing agent additive that has a Hansen Solubility Parameter (8t) that is greater than 17 MPa°′5; and (iii) mixing the A-side reactant stream with the B-side reactant stream to produce a reaction mixture.
Source: PVGPATDIS, file of 2026-04-10 (ipg211116.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Firestone Building Products Company, LLC 136 patents | US company or organization | Nashville, TN | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| John B. Letts | Carmel, IN | 22 | PVGPATDIS, file of 2026-04-10 | |
| Chunhua Yao | Carmel, IN | 18 | PVGPATDIS, file of 2026-04-10 | |
| Michael J. Hubbard | Murfreesboro, TN | 62 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C08J | Working-up; general processes of compounding; after-treatment not covered by subclasses c08b, c08c, c08f, c08g or c08h | C08J9/0023 | PVGPATDIS, file of 2026-04-10 |
| B32B | Layered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form | B32B5/20 | PVGPATDIS, file of 2026-04-10 |
| C08G | Macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds | C08G18/14 | 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 |
|---|---|---|---|---|---|
| 2025-09-02 | Assignment Assignment of assignor's interest | HOLCIM TECHNOLOGY LTD signed 2025-06-01 | AMRIZE TECHNOLOGY SWITZERLAND LLC ZUG | 72795/105 | PASDL, file of 2026-10-15 |
| 2022-06-14 | Assignment Assignment of assignor's interest | FIRESTONE BUILDING PRODUCTS COMPANY, LLC signed 2022-04-04 | HOLCIM TECHNOLOGY LTD 6300 ZUG | 60366/33 | PASDL, file of 2026-10-15 |
| 2018-05-30 | Assignment Assignment of assignor's interest | LETTS, JOHN signed 2018-03-08 YAO, CHUNHUA signed 2018-03-08 HUBBARD, MICHAEL signed 2018-03-09 | FIRESTONE BUILDING PRODUCTS COMPANY, LLC NASHVILLE, TN | 45929/813 | PASDL, file of 2026-10-15 |
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.