US3305503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wax extended urethane polymers
Assignee: Atlantic Richfield Co
•
Filing: 1964-11-04
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Granted: 1967-02-21
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Expires: 1984-11-04
Abstract
No abstract record available.
Inventors
- 👤 Donald H Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:18
CPC Classifications
C; C08; C08L; C08L75/00; C08L75/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
AN EXTENDED RUBBERY URETHANE POLYMER COMPOSITION CONSISTING ESSENTIALLY OF A CURED URETHANE POLYMER AND AN EXTENDER WHEREIN SAID EXTENDER IS PRESENT IN AMOUNTS RANGING FROM 20 TO 60 PERCENT BY WEIGHT IN THE TOTAL COMPOSITION AND IS A MIXTURE OF PETROLEUM WAX AND AN ETHYLENEVINYL ACETATE COPOLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 25,000 AND A POLYMERIZED VINYL ACETATE CONTENT RANGING FROM 5 TO 40 WEIGHT PERCENT, AND WHEREIN THE WEIGHT RATIO OF SAID WAX TO SAID CO-POLYMER RANGES FROM 0.25:1 TO 4:1.
Claim 2
Dependent Claim
84 words
AN EXTENDED RUBBERY URETHANE POLYMER COMPOSITION CONSISTING ESSENTIALLY OF A CURED URETHANE POLYMER AND AN EXTENDER WHEREIN SAID EXTENDER IS PRESENT IN AMOUNTS RANGING FROM 20 TO 60 PERCENT BY WEIGHT IN THE TOTAL COMPOSITION AND IS A MIXTURE OF PETROLEUM WAX AND AN ETHYLENEVINYL ACETATE COPOLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 25,000 AND A POLYMERIZED VINYL ACETATE CONTENT RANGING FROM 5 TO 40 WEIGHT PERCENT, AND WHEREIN THE WEIGHT RATIO OF SAID WAX TO SAID CO-POLYMER RANGES FROM 0.25:1 TO 4:1.
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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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |