US3344064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorocarbon-modified polyurethane elastomeric compositions
Assignee: EIDP Inc
•
Filing: 1963-07-19
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Granted: 1967-09-26
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Expires: 1983-07-19
Abstract
No abstract record available.
Inventors
- 👤 James D Brady
- 👤 Pinto Joseph G Di
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:06
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08L; C08L75/00; C08L75/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A COMPOSITION CONSISTING ESSENTIALLY OF A CURABLE LIQUID POLYURETHANE PREPOLYMER HAVING DISPERSED THEREIN FROM ABOUT 1% TO ABOUT 90% BY WEIGHT, BASED ON THE WEIGHT OF THE COMPOSITION, OF SMALL PATICLES OF A SOLID FLUOROCARBON COMPOUND CONTAINING AT LEAST 90% BY WEIGHT OF A CHAIN OF UNITS HAVING THE STRUCTURE -CF2CF2-, SAID SOLID FLURORCARBON COMPOUND HAVING A MOLECULAR WEIGHT FROM ABOUT 500 TO ABOUT 50,000 AND A MELTING POINT OF FROM 90*C. TO 327*C.
Claim 2
Dependent Claim
74 words
A COMPOSITION CONSISTING ESSENTIALLY OF A CURABLE LIQUID POLYURETHANE PREPOLYMER HAVING DISPERSED THEREIN FROM ABOUT 1% TO ABOUT 90% BY WEIGHT, BASED ON THE WEIGHT OF THE COMPOSITION, OF SMALL PATICLES OF A SOLID FLUOROCARBON COMPOUND CONTAINING AT LEAST 90% BY WEIGHT OF A CHAIN OF UNITS HAVING THE STRUCTURE -CF2CF2-, SAID SOLID FLURORCARBON COMPOUND HAVING A MOLECULAR WEIGHT FROM ABOUT 500 TO ABOUT 50,000 AND A MELTING POINT OF FROM 90*C. TO 327*C.
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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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |