US2681331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic rubbery tripolymers of butadiene, alkyl-butadienes, and vinyl pyridines
Assignee: Uniroyal Inc
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Filing: 1951-07-30
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Granted: 1954-06-15
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Expires: 1971-07-30
Abstract
No abstract record available.
Inventors
- 👤 Louis H Howland
- 👤 Victor S Chambers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:16
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A SYNTHETIC RUBBER AQUEOUS EMULSION POLYMERIZATE OF POLYMERIZABLE MONOMERS CONSISTING OF ABOUT 80 PARTS BY WEIGHT OF BUTADIENE-1,3, ABOUT 10 PARTS BY WEIGHT OF 2,3-DIALKYBUTADIENE1,3 IN WHICH THE ALKYL SUBSTITUENTS HAVE 1 TO 4 CARBON ATOMS AND ABOUT 10 PARTS BY WEIGHT OF A VINYL PYRIDINE SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED MONOVINYL PYRIDINES AND MONOALKYL MONOVINYL PYRIDINES AND DIALKYL MONOVINYL PYRIDINES IN WHICH THE ALKYL SUBSTITUTENTS HAVE 1 TO 2 CARBON ATOMS.
Claim 2
Dependent Claim
74 words
A SYNTHETIC RUBBER AQUEOUS EMULSION POLYMERIZATE OF POLYMERIZABLE MONOMERS CONSISTING OF ABOUT 80 PARTS BY WEIGHT OF BUTADIENE-1,3, ABOUT 10 PARTS BY WEIGHT OF 2,3-DIALKYBUTADIENE1,3 IN WHICH THE ALKYL SUBSTITUENTS HAVE 1 TO 4 CARBON ATOMS AND ABOUT 10 PARTS BY WEIGHT OF A VINYL PYRIDINE SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED MONOVINYL PYRIDINES AND MONOALKYL MONOVINYL PYRIDINES AND DIALKYL MONOVINYL PYRIDINES IN WHICH THE ALKYL SUBSTITUTENTS HAVE 1 TO 2 CARBON ATOMS.
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) | 1957-06-14 | 1957-12-14 | 1958-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-14 | 1961-12-14 | 1962-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-14 | 1965-12-14 | 1966-06-15 | $7700.00 | Window Closed / Lapsed |