US3193447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of paper-like materials comprising synthetic fibres
Assignee: Viscosuisse SA
•
Filing: 1962-03-08
•
Granted: 1965-07-06
•
Expires: 1982-03-08
Abstract
No abstract record available.
Inventors
- 👤 Marek Bruno Stefan Vladimir
- 👤 Gneisz Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:56
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/1254; D21H13/00; D21H13/10; D21H13/20; D21H13/26; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/54; D21H17/55
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN A PROCESS FOR THE PRODUCTION OF A PAPER-LIKE AMTERIAL COMPRISING SYNTHETIC FIBES, IN WHICH PROCESS A UNIFORM SUSPENSION OF SAID FIBERS IN WATER IS FORMED INTO A SHEET, THE IMPROVEMENT WHICH COMPRISES A STEP OF COATING SAID FIBERS WITH A SOLUTION CONSISTING OF WATER AND N-ETHOXYLATED POLYAMIDE, WHICH N-ETHOXYLATED POLYAMIDE HAS A DEGREE OF ETHOXYLATION CORRESPONDING TO 8 TO 12 MOLS OF ETHYLENE OXIDE PER GRAM ATOM OF NITROGEN, PRIOR TO THE FORMATION OF SAID SHEET.
Claim 2
Dependent Claim
77 words
IN A PROCESS FOR THE PRODUCTION OF A PAPER-LIKE AMTERIAL COMPRISING SYNTHETIC FIBES, IN WHICH PROCESS A UNIFORM SUSPENSION OF SAID FIBERS IN WATER IS FORMED INTO A SHEET, THE IMPROVEMENT WHICH COMPRISES A STEP OF COATING SAID FIBERS WITH A SOLUTION CONSISTING OF WATER AND N-ETHOXYLATED POLYAMIDE, WHICH N-ETHOXYLATED POLYAMIDE HAS A DEGREE OF ETHOXYLATION CORRESPONDING TO 8 TO 12 MOLS OF ETHYLENE OXIDE PER GRAM ATOM OF NITROGEN, PRIOR TO THE FORMATION OF SAID SHEET.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |