Patent US3291767A successfully refreshed from Google Patents.
US3291767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphaltic filament comprising asphalt, ethylene-vinyl acetate copolymer and paraffinwax
Assignee: Sunoco Inc
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Filing: 1963-07-16
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Granted: 1966-12-13
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Expires: 1983-07-16
Abstract
No abstract record available.
Inventors
- 👤 Zaayenga Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:53
CPC Classifications
C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
A SUBSTANTIALLY CONTINUOUS FLEXIBLE, NON-TACKY FILAMENT HAVING A DIAMETER OF .001 TO .02 INCH COMPRISING FROM 50 TO 75 WT. PERCENT ASPHALT HAVING A SOFTENING POINT OF 200-300*F., FROM 10-20 WT. PERCENT PARAFFIN WAX HAVING A MELT POINT OF 125-160*F. AND FROM 10-20 WT. PERCENT OF AN ETHYLENE-VINLY ACETATE COPOLYMER RESIN HAVING A SOFTENING POINT OF 200-300*F. AND CONTAINING 5 TO 15 MOLES OF ETHYLENE PER MOLE OF VINYL ACETATE SAID FILAMENT BEING CHARACTERIZED BY THE ABILITY TO BE WOUND ON A ONE INCH DIAMETER SPOOL AND UNWOUND THEREFROM WITHOUT BREAKING OR STICKING AT A TEMPERATURE OF 100-150*F.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |