US3206343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of pile construction
Assignee: Celanese Corp
•
Filing: 1958-12-23
•
Granted: 1965-09-14
•
Expires: 1978-12-23
Abstract
No abstract record available.
Inventors
- 👤 Samuel B Mcfarlane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:28
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/24; D; D04; D04H; D04H11/00; Y; Y10; Y10T; Y10T24/00; Y10T24/27; Y10T24/275; Y10T428/00; Y10T428/23907; Y10T428/23979; Y10T428/23993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
THE METHOD FOR MAKING A CARPET PILE CONSTRUCTION WHICH COMPRISES POSITONING A TEXTILE SHEET OVER A PLURALITY OF DISCRETE CELLULOSE FILAMENTS CONTAINING FREE HYDROXY GROUPS, APPLYING A VISCOUS FOAMING COMPOSITION TO SAID TEXTILE SHEET, SAID FOAMING COMPOSITION COMPRISING A MIXTURE OF A POLYHYDROXY-CONTAINING POLYMER, A DIISOCYISOCYANATE GROUPS OVER THE HYDROXY GROUPS, AND WATER IN AN AMOUNT SUFFICIENT TO REACT WITH THE EXCESS ISOCYANATE GROUPS, AND CONTACTING SAID FILAMENTS BY PENETRATING SAID SHEET, AND ALLOWING SAID COMPOSITION TO SET TO A FOAMED FLEXIBLE BACKING CONSTITUTING AN INTEGRAL PADDING FOR THE FILAMENTS WHICH CONSTITUTE A CARPET PILE, THEREBY EMBEDDING SAID TEXTILE SHEET IN THE RESULTING FOAM.
Claim 2
Independent Claim
104 words
THE METHOD FOR MAKING A CARPET PILE CONSTRUCTION WHICH COMPRISES POSITONING A TEXTILE SHEET OVER A PLURALITY OF DISCRETE CELLULOSE FILAMENTS CONTAINING FREE HYDROXY GROUPS, APPLYING A VISCOUS FOAMING COMPOSITION TO SAID TEXTILE SHEET, SAID FOAMING COMPOSITION COMPRISING A MIXTURE OF A POLYHYDROXY-CONTAINING POLYMER, A DIISOCYISOCYANATE GROUPS OVER THE HYDROXY GROUPS, AND WATER IN AN AMOUNT SUFFICIENT TO REACT WITH THE EXCESS ISOCYANATE GROUPS, AND CONTACTING SAID FILAMENTS BY PENETRATING SAID SHEET, AND ALLOWING SAID COMPOSITION TO SET TO A FOAMED FLEXIBLE BACKING CONSTITUTING AN INTEGRAL PADDING FOR THE FILAMENTS WHICH CONSTITUTE A CARPET PILE, THEREBY EMBEDDING SAID TEXTILE SHEET IN THE RESULTING FOAM.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |