Patents
US 10787997 B1: Rocket booster casings made with semipreg having a thermoplastic toughened novolac-based epoxy resin matrix
- Granted
- 2020-09-29
- Filed
- 2019-10-03 application 16592589
- Type
- Utility · 12 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A semipreg that can be cured/molded to form aerospace composite parts including rocket booster casings. The semipreg includes a fibrous layer and a resin layer located on one side of the fibrous layer. The resin layer includes an epoxy component that is a combination of a hydrocarbon epoxy novolac resin and a trifunctional epoxy resin and optionally a tetrafunctional epoxy resin. The resin matrix includes polyethersulfone as a toughening agent and a thermoplastic particle component.
Source: PVGPATDIS, file of 2026-04-10 (ipg200929.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Hexcel Corporation 118 patents | US company or organization | Dublin, CA | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Kathlyn Lizette Baron | Dublin, CA | 2 | PVGPATDIS, file of 2026-04-10 | |
| Gordon Emmerson | Dublin, CA | 11 | PVGPATDIS, file of 2026-04-10 | |
| Yen-Seine Wang | San Ramon, CA | 24 | 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 | C08J5/042 | PVGPATDIS, file of 2026-04-10 |
| B29B | Preparation or pretreatment of the material to be shaped; making granules or preforms; recovery of plastics or other constituents of waste material containing plastics | B29B15/122 | PVGPATDIS, file of 2026-04-10 |
| B29C | Shaping or joining of plastics; shaping of material in a plastic state, not otherwise provided for; after-treatment of the shaped products, e.g. repairing | B29C70/50 | PVGPATDIS, file of 2026-04-10 |
| B64G | Cosmonautics; vehicles or equipment therefor | B64G1/10 | PVGPATDIS, file of 2026-04-10 |
| C08G | Macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds | C08G59/32 | PVGPATDIS, file of 2026-04-10 |
| C08L | Compositions of macromolecular compounds | C08L63/04 | PVGPATDIS, file of 2026-04-10 |
| F02K | Jet-propulsion plants | F02K9/34 | PVGPATDIS, file of 2026-04-10 |
| B64C | Aeroplanes; helicopters | B64C2001/0072 | PVGPATDIS, file of 2026-04-10 |
| F05D | Indexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants | F05D2300/603 | PVGPATDIS, file of 2026-04-10 |
| Y02T | Climate change mitigation technologies related to transportation | Y02T50/40 | 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 |
|---|---|---|---|---|---|
| 2019-10-04 | Assignment Assignment of assignor's interest | BARON, KATHYLN LIZETTE signed 2017-12-12 EMMERSON, GORDON signed 2017-12-12 WANG, YEN-SEINE signed 2017-12-12 | HEXCEL CORPORATION DUBLIN, CA | 50627/870 | 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.