US3645949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Procfss for constructing tufted carpets and rugs and bonding agent useful therein
Assignee: Union Carbide Corp
•
Filing: 1968-04-04
•
Granted: 1972-02-29
•
Expires: 1988-04-04
Abstract
Abstract TUFTED CARPETS AND RUGS OF FIBROUS STRANDS ARE CONSTRUCTED BY SINEING THE BACK OF A TUFTED WEB, AND PREHEATING THE BACK OF THE TUFTED WEB, APPLYING A PARTICULATE BONDING AGENT TO THE PREHEATED WEB, HEATING THE BONDING AGENT ABOVE ITS FUSION TEMPERATURE AND APPLYING A PRESSURE WITH COOLING TO FORCE THE BONDING AGENT OVER THE BACK OF THE TUFTED WEB AND INTO THE FIBROUS STRANDS. A NOVEL COMPOSITION UTILE AS THE BONDING AGENT COMPRISES A HYDROCARBON POLYMER OF A LOWER ALKENE, SUCH AS POLYETHYLENE, HAVING A MELT INDEX LESS THAN 150, AN ETHYLENE/MONO-UNSATURATED ESTER COPOLYMER HAVING A MELT INDEX GREATER THAN 100 AND A WAX HAVING A MELTING POINT OF FROM 75* TO 95*C.
Inventors
- 👤 Fred J Crimi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:42
CPC Classifications
D; D06; D06M; D06M17/00; D06M17/04; C; C09; C09J; C09J123/00; C09J123/02; C09J123/04; D06M15/00; D06M15/19; D06M15/21; C08; C08L; C08L2666/00; C08L2666/02
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |