US3012846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of knop filaments
Assignee: Bayer AG
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Filing: 1960-03-01
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Granted: 1961-12-12
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Expires: 1980-03-01
Abstract
No abstract record available.
Inventors
- 👤 Froitzheim Hans
- 👤 Schmitz Johann
- 👤 Borger Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:45
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/12; D01D5/14; D01D5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
PROCESS FOR THE MANUFACTURE OF KNOP FILAMENTS BY THE CELLULOSE-CUPRAMMONIUM PROCESS WHICH COMPRISES CLOSING, DURING THE SPINNING PROCESS AND WHILE THE SUPPLY OF THE SPINNING SOLUTION TO THE SPINNERET IS KEPT CONSTANT THE THIELE FUNNEL AT THE LOWER END AND INTERRUPTING SIMULTANEOUSLY THE WITHDRAWAL OF THE BUNDLE OF FILAMENTS, OPENING THE THIELE FUNNEL AGAIN AFTER A RESIDENCE TIME OF 1 TO 20 SECOND, WITHDRAWING AFTER A SHORT DELAY THE BUNDLE OF FILAMENTS AGAIN, AND REPEATING THIS OPERATION AFTER IRREGULAR WITHDRAWAL INTERVALS.
Claim 2
Dependent Claim
81 words
PROCESS FOR THE MANUFACTURE OF KNOP FILAMENTS BY THE CELLULOSE-CUPRAMMONIUM PROCESS WHICH COMPRISES CLOSING, DURING THE SPINNING PROCESS AND WHILE THE SUPPLY OF THE SPINNING SOLUTION TO THE SPINNERET IS KEPT CONSTANT THE THIELE FUNNEL AT THE LOWER END AND INTERRUPTING SIMULTANEOUSLY THE WITHDRAWAL OF THE BUNDLE OF FILAMENTS, OPENING THE THIELE FUNNEL AGAIN AFTER A RESIDENCE TIME OF 1 TO 20 SECOND, WITHDRAWING AFTER A SHORT DELAY THE BUNDLE OF FILAMENTS AGAIN, AND REPEATING THIS OPERATION AFTER IRREGULAR WITHDRAWAL INTERVALS.
References Cited (Backward Citations)
US2125230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |