US3563845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal insulating composite structure
Assignee: Monsanto Co
•
Filing: 1969-04-22
•
Granted: 1971-02-16
•
Expires: 1989-04-22
Abstract
Abstract IMPROVED INTEGRAL, THREE-LAYERED PLASTIC, THERMALLY INSULATING COMPOSITES EACH HAVING AN IMPACT RESISTANT SOLID FACING LAYER OF A MONOVINYL AROMATIC COMPOUND/ALPHAELECTRONEGATIVELY SUBSTITUTED ETHENE COMPOUND INTERPOLYMER SYSTEM, A LAYER OF CELLULAR POLYURETHANE, AND AN ELASTOMERIC INTERLAYER POSITIONED BETWEEN THESE TWO LAYERS. THE RESULTING COMPOSITES HAVE IMPROVED IMPACT RESISTANCE AS RESPECTS THE SOLID FACING LAYER.
Inventors
- 👤 James K Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:49
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/04; B29C44/06; E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; E04C2/205; F; F25; F25D; F25D23/00; F25D23/06; F25D23/062; F25D23/064; B29L; B29L2031/00; B29L2031/762; B29L2031/7622; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24992; Y10T428/249921; Y10T428/249953; Y10T428/249954; Y10T428/249976; Y10T428/249977; Y10T428/249987; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |