US2908545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinning nonfused glass fibers from an aqueous dispersion
Assignee: Montedison SpA
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Filing: 1955-05-25
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Granted: 1959-10-13
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Expires: 1975-05-25
Abstract
No abstract record available.
Inventors
- 👤 Jayanti D Teja
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:32
CPC Classifications
C; C03; C03C; C03C13/00; Y; Y10; Y10S; Y10S264/00; Y10S264/19; Y10S65/00; Y10S65/901
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
185 words
THE METHOD OF PREPARING A GLASS FIBER AT ROOM TEMPERATUE FROM A STABLE HETEROGENOUS AQUEOUS SYRUP WHICH INCLUDES THE STEPS OF MIXING AT ROOM TEMPERATURE A DISPERSION OF GLASS-FORMING METAL OXIDES HAVING A PARTICLE SIZE WITHIN THE RANGE FROM 5 TO 140 MICRONS WITH A DISPERSION OF COLLOIDAL SILICA HAVING A PARTICLE SIZE LESS THAN 1 MICRON, ADDING TO THE RESULTING MIXTURE LESS THAN 2% BY WEIGHT BASED ON THE METAL OXIDE PARTICLES OF TRANSFORMING AGENT COMPRISING ABOUT 3.2% RUBBER FROM LATEX, ABOUT 1.3% ACRYLATE AND VINYL MATERIAL COMPRISING POLYVINYL ALCOHOL, POLYVINYL ACETATE, POLYMETHACRYLIC ACID AND COPOLYMERS, ABOUT 0.65% POLYSILIOXANE MATERIAL ABOUT 0.072% METHYL SILICONATE MATERIAL, ABOUT 1.5% AMMONIUM ACETATE, AND ABOUT 92.25% OF A THREE PERCENT AQUEOUS AMMONIUM HYDROXIDE SOLUTION, EXTRUDING A FINE DIAMETER STREAM OF SAID SOLUTION INTO A GAS SPACE TO BRING ABOUT DEHYDRATION AGGREGATION NEAR THE POINT OF WITHDRAWAL OF THE STREAM FROM THE SOLUTION INTO THE GAS SPACE WHEREBY A GLASS FIBER IS FORMED, AND SURROUNDING SAID GLASS FIBER THUS FORMED WITH AN ELECTRO-STATIC FIELD OF EXERT LINES OF FORCE GENERALLY PARALLEL TO THE LINEAR DIMENSION OF THE GLASS FIBER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |