US3729370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of vinyl-coated polyurethane foams
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1972-04-12
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Granted: 1973-04-24
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Expires: 1992-04-12
Abstract
Abstract CERTAIN COMBINATIONS OF POLYURETHANE FOAM INGREDIENTS WHICH REACT ESSENTIALLY AT ROOM TEMPERATURE ARE MIXED AND POURED INTO VACUUM-FORMED POLYVINYL SHEETING AND ALLOWED TO CURE THEREBY PRODUCING A POLYURETHANE FOAM WITH A STRONGLY ADHERENT POLYVINYL COATING.
Inventors
- 👤 D Cobbledick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:24
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/34; B; B32; B32B; B32B27/00; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/63; C08G18/65; C08G18/6552; C08G18/6558; C08G18/657; C08G2110/00; C08G2110/0008; C08G2110/0016; C08G2110/0033; C08G2110/0041; C08G2110/0058; C08G2110/0066; C08J2375/00; Y; Y10; Y10S; Y10S264/00; Y10S264/14; Y10S521/00; Y10S521/904; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249984; Y10T428/249987; Y10T428/249988; Y10T428/249989; Y10T428/249991; Y10T428/249992; Y10T428/31504; Y10T428/31855; Y10T428/31935
Claims Analysis
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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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |