US2708813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for producing glass fibers
Assignee: Compagnie de Saint Gobain SA
•
Filing: 1949-05-31
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Granted: 1955-05-24
•
Expires: 1969-05-31
Abstract
No abstract record available.
Inventors
- 👤 Bourgeaux Maurice Marcel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:35
CPC Classifications
C; C03; C03B; C03B27/00; C03B27/02; C03B27/03; C03B27/008; C03B27/028; C03B27/04; C03B27/06; C03B37/00; C03B37/01; C03B37/02; C03B37/0203; C03B37/0209; C03B37/022; Y; Y10; Y10S; Y10S118/00; Y10S118/19
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
A METHOD FOR THE MANUFACTURE OF CURLED OR UNDULATED GLASS FIBERS WHICH COMPRISES MECHANICALLY DRAWING FINE FIBERS FROM MOLTEN THERMOPLASTIC MATERIAL, SUBMITTING THE FIBERS IN THE COURSE OF THEIR FORMATION AND IN A PLASTIC STATE SUITABLE FOR THEIR DEFORMATION, TO A DIFFERENTIAL THERMAL TREATMENT LOCALIZED ON ONLY ONE SIDE OF SAID FIBERS CREATING INTERNAL TENSION IN EACH FIBER.
Claim 2
Independent Claim
58 words
A METHOD FOR THE MANUFACTURE OF CURLED OR UNDULATED GLASS FIBERS WHICH COMPRISES MECHANICALLY DRAWING FINE FIBERS FROM MOLTEN THERMOPLASTIC MATERIAL, SUBMITTING THE FIBERS IN THE COURSE OF THEIR FORMATION AND IN A PLASTIC STATE SUITABLE FOR THEIR DEFORMATION, TO A DIFFERENTIAL THERMAL TREATMENT LOCALIZED ON ONLY ONE SIDE OF SAID FIBERS CREATING INTERNAL TENSION IN EACH FIBER.
Claim 3
Dependent Claim
62 words
IN AN APPARATUS FOR THE MANUFACTURE OF CURLED OR UNDULATED GLASS FIBERS, THE COMBINATION OF SPINNERETTES FROM WHICH THE MOLTEN GLASS TISSUE, MEANS FOR DRAWING FIBERS AS FORMED AND A COOLING SURFACE LOCATED ADJACENT AND IN CONTACT WITH A PORTION ONLY OF THE PRIPHERY OF EACH FIBER AND EXERTING A CHILLING ACTION ON SAID PORTION THEREBY CREATING INTERNAL TENSION IN EACH FIBER.
Claim 4
Dependent Claim
62 words
IN AN APPARATUS FOR THE MANUFACTURE OF CURLED OR UNDULATED GLASS FIBERS, THE COMBINATION OF SPINNERETTES FROM WHICH THE MOLTEN GLASS TISSUE, MEANS FOR DRAWING FIBERS AS FORMED AND A COOLING SURFACE LOCATED ADJACENT AND IN CONTACT WITH A PORTION ONLY OF THE PRIPHERY OF EACH FIBER AND EXERTING A CHILLING ACTION ON SAID PORTION THEREBY CREATING INTERNAL TENSION IN EACH FIBER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-23 | 1958-11-22 | 1959-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-23 | 1962-11-22 | 1963-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-23 | 1966-11-22 | 1967-05-24 | $7700.00 | Window Closed / Lapsed |