US2778764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sizing glass fibers to form strands
Assignee: Owens Corning
•
Filing: 1951-09-13
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Granted: 1957-01-22
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Expires: 1971-09-13
Abstract
No abstract record available.
Inventors
- 👤 Albert R Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:41
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/59; C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C03C25/32; C03C25/328; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/2964; Y10T428/2973; Y10T428/2978
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN THE METHOD OF SIZING GLASS FIBERS TO FORM STRANDS, THE STEPS OF COATING THE GLASS FILAMENTS BEFORE BEING ARRANGED IN STRAND FORMATION WITH A CATIONIC DISPERSION OF A POLYAMIDE RESIN TO DEPOSIT THE POLYAMIDE RESIN AS FINE PARTICLES ON THE SURFACES OF THE GLASS FILAMENTS, AND THEN HEATING THE FILAMENTS WHEN IN STRAND FORM AT A TEMPERATURE SUFFICIENT TO DRY AND FUSE THE PARTICLES OF POLYAMIDE
Claim 2
Dependent Claim
67 words
IN THE METHOD OF SIZING GLASS FIBERS TO FORM STRANDS, THE STEPS OF COATING THE GLASS FILAMENTS BEFORE BEING ARRANGED IN STRAND FORMATION WITH A CATIONIC DISPERSION OF A POLYAMIDE RESIN TO DEPOSIT THE POLYAMIDE RESIN AS FINE PARTICLES ON THE SURFACES OF THE GLASS FILAMENTS, AND THEN HEATING THE FILAMENTS WHEN IN STRAND FORM AT A TEMPERATURE SUFFICIENT TO DRY AND FUSE THE PARTICLES OF POLYAMIDE
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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) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |