US2547733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Partially cured rubberlike cement
Assignee: Standard Oil Development Co
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Filing: 1945-12-28
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Granted: 1951-04-03
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Expires: 1965-12-28
Abstract
No abstract record available.
Inventors
- 👤 Francis P Baldwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:08
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/18; C09J123/20; C09J123/22; C08; C08L; C08L2666/00; C08L2666/28; C08L2666/36
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
A CEMENT COMPRISING A LIGHT HYDROCARBON SOLUTION OF AN ISOOLEFIN-DIOLEFIN INTERPOLYMER OF A MAJOR PROPORTION OF ISOBUTYLENE WITH A MINOR PROPORTION OF A CONJUGATED DIOLEFIN HAVING 4 TO 8 CARBON ATOMS PER MOLECULE, THE POLYMER BEING CHARACTERIZED BY A LOW UNSATURATION BELOW AN IODINE NUMBER OF 50, A MOLECULAR WEIGHT ABOVE 15,000 AND REACTIVITY WITH SULFUR TO YIELD AN ELAS TIC PRODUCT, SAID INTERPOLYMER HAVING COMBINED THEREINTO BEFORE SOLUTION AN AMOUNT BETWEEN .05% AND 0.5% BY WEIGHT OF A DINITROSO AROMATIC HYDROCARBON IN AN AMOUNT SUFFICIENT TO PARTIALLY CURE SAID INTERPOLYMER BUT IN AN AMOUNT INSUFFICIENT TO DESTROY THE SOLUBILITY THEREOF IN THE LIGHT HYDROCARBON SOLUTION.
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) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |