US2943350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide melt spinning process and apparatus
Assignee: Bayer AG
•
Filing: 1958-02-24
•
Granted: 1960-07-05
•
Expires: 1978-02-24
Abstract
No abstract record available.
Inventors
- 👤 Rodenacker Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:48
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/04; C; C08; C08G; C08G69/00; C08G69/02; C08G69/04; D01F; D01F6/00; D01F6/58; D01F6/60
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
81 words
IN A SYSTEM COMPRISING A SPINNERET FOR THE EXTRUSION OF MOLTEN POLYAMIDE AND A MELT CHAMBER WHICH SUPPLIES MOLTEN POLYAMIDE TO SAID SPINNERET, IN COMBINATION, AN AIR-CONDITIONING CHAMBER POSITIONED ADJACENT SAID MELT CHAMBER, A CONDUIT CONNECTING SAID CHAMBERS, MEANS FOR SATURATING NITROGEN WITH WATER VAPOR WITHIN SAID AIR-CONDITIONING CHAMBER, THE LATTER BEING MAINTAINED AT A TEMPERATURE LOWER THAN THAT IN SAID MELT CHAMBER, AND MEANS FOR CIRCULATING SAID SATURATED NITROGEN THROUGH SAID CONDUIT INTO SAID MELT CHAMBER SO AS TO MAINTAIN
References Cited (Backward Citations)
US2571975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |