US3564085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making heat sealable foams
Assignee: Schoff Mfg Co Inc
•
Filing: 1966-11-17
•
Granted: 1971-02-16
•
Expires: 1986-11-17
Abstract
Abstract A METHOD OF FORMING A HEAT AND HIGH FREQUENCY SEALBLE FOAM COMPOSITION BY MIXING DISCRETE PARTICLES OF A ON-HEAT-SEALBLE POLYURETHANE FOAM AND A HEAT GELLABLE PLASTISOL OF POLYVINYL CHLORIDE THERMOPLASTIC RESIN. THE MIXTURE IS PRESSED INTO A SHEET AND HEATED TO THE GELLING TEMPERATURE OF THE PLASTISOL TO FORM THE HEAT SEALABLE AND HIGH FREQUENCY SHEET.
Inventors
- 👤 Erich Schickedanz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:44
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/33; B; B29; B29B; B29B17/00; B29B17/0026; B29C; B29C44/00; B29C44/20; B29C44/30; B29C67/00; B29C67/20; B29C67/207; C08J2321/00; C08J2361/00; C08J2361/04; C08J2361/20; C08J2361/22; C08J2361/24; C08J2375/00; C08J2375/04; C08J2427/00; C08J2427/02; C08J2427/04; C08J2427/06; C08J2433/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24496; Y10T428/24504; Y10T428/24512; Y10T428/24521; Y10T428/24545
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 |