US3585015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for producing filaments from vitreous materials
Assignee: Individual
•
Filing: 1968-11-19
•
Granted: 1971-06-15
•
Expires: 1988-11-19
Abstract
Abstract IN THE PRODUCTION OF FILAMENTS FROM VITREOUS THERMOPLASTIC MATERIAL THREADS OF THE MATERIAL IN LIQUID FROM ARE EXUDED ONTO THE THE SURFACE OF A ROTATING DRAWING DRUM AT A FIRST LOCATION AND ARE STRIPPED OFF THE SURFACE AT A DOWNSTREAM SECOND LOCATION. A SIZING SUBSTANCE FOR THE FILAMENTS IS APPLIED ONTO THE SURFACE OF THE DRUM INTERMEDIATE THESE TWO LOCATION SO AS TO BE TRANSFERRED ONTO THE FILAMENTS WHEN THE SAME CONTACT THE DRUM SURFACE.
Inventors
- 👤 Harald Hohlfeld
- 👤 Gunter Wiegand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:56
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/03; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57
Claims Analysis
Total Claims: 0
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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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |