US3230184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass microsphere and fiber filled polyester resin composition
Assignee: Standard Oil Co
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Filing: 1962-03-06
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Granted: 1966-01-18
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Expires: 1982-03-06
Abstract
No abstract record available.
Inventors
- 👤 Harvey E Alford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:09
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/16; C08K7/18; C08K7/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A POLYESTER MOLDING COMPOSITION COMPRISING AN ETHYLENICALLY UNSURATED POLYESTRER MOLDING RESIN, AND, AS A FILLER, FIBROUS MATERIAL AND HOLLOW DISCRETE SPHERES OF SYNTHETIC, FUSED WATER-INSOLUBLE ALKALI METAL SILCATE-BASED GLASS, SAID HOLLOW SPHERES HAVING SOLID WALLS OF THE SAME DENSITY THROUGHOUT, AND CLEAR, SMOOTH SURFACES, DIAMETERS OF FROM 5 TO 5,000 MICRONS AND WALL THICKNESSES OF FROM 0.5 TO 10% OF THEIR DIAMETERS, A MASS OF SAID SPHERES HAVING A GAS DENSITY OF 0.1 TO 0.75 GM./ML.
Claim 2
Dependent Claim
76 words
A POLYESTER MOLDING COMPOSITION COMPRISING AN ETHYLENICALLY UNSURATED POLYESTRER MOLDING RESIN, AND, AS A FILLER, FIBROUS MATERIAL AND HOLLOW DISCRETE SPHERES OF SYNTHETIC, FUSED WATER-INSOLUBLE ALKALI METAL SILCATE-BASED GLASS, SAID HOLLOW SPHERES HAVING SOLID WALLS OF THE SAME DENSITY THROUGHOUT, AND CLEAR, SMOOTH SURFACES, DIAMETERS OF FROM 5 TO 5,000 MICRONS AND WALL THICKNESSES OF FROM 0.5 TO 10% OF THEIR DIAMETERS, A MASS OF SAID SPHERES HAVING A GAS DENSITY OF 0.1 TO 0.75 GM./ML.
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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |