Patent US2468150A successfully refreshed from Google Patents.
US3594459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of conjugate foam fibrillated structures
Assignee: Celanese Corp
•
Filing: 1967-04-03
•
Granted: 1971-07-20
•
Expires: 1987-04-03
Abstract
Abstract PROCESSES FOR THE PREPARATION OF CONJUGATE FIBRILLATED EXTRUDATES AND THE PRODUCTS PRODUCED THEREBY, THE PROCESS INVOLVING EXTRUDING A CONJUGATE EXTRUDATE, AT LEAST ONE COMPONENT OF SAID EXTRUDATE CONTAINING A FOAMING AGENT AND THEN ATTENUATING THE FOAMED EXTRUDATE. ATTENUATION OF THE EXTRUDATE ENCOMPASSES PROCESSES WHEREIN SAID EXTRUDATE IN MAINTAINED AT TEMPERATURES SUFFICIENTLY HIGH TO INHIBIT ORIENTATION AND PRODUCE FIBRILLATION WHILE THE POLYMER IS IN UNORIENTED CONFIGURATION AND PROCESSES WHEREIN THE EXTRUDATE IS COOLED TO A TEMPERATURE SUFFICIENTLY LOW TO INDUCE ORIENTATION, ORIENTED AND FIBRILLATED.
Inventors
- 👤 Herbert W Keuchel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:13
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/42; D01D5/423; B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/46; B29C44/50; C; C08; C08J; C08J9/00; C08J9/04; D01D5/28; D01D5/30; Y; Y10; Y10S; Y10S264/00; Y10S264/08; Y10S264/47; Y10S57/00; Y10S57/907
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |