US3280082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfur vulcanizable elastomers of ethylene, at least one other alpha-olefin and a conjugated diolefin and a process for preparing same
Assignee: Montedison SpA
•
Filing: 1957-07-01
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Granted: 1966-10-18
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Expires: 1977-07-01
Abstract
No abstract record available.
Inventors
- 👤 Natta Giulio
- 👤 Boschi Giorgio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:18
CPC Classifications
C; C08; C08F; C08F210/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
SULFUR-VULCANIZABLE, ELASTOMERIC, SOLID, ESSENTIALLY AMORPHOUS, LINEAR, HIGH MOLECULAR WEIGHT TERPOLYMERIZATES OF CONJUGATED DIOLEFFINS SELECTED FROM THE GROUP CONSISTING OF BUTADIENE, ISOPRENE, AND PENTADIENE-1,3 WITH ETHYLENE AND PROPYLENE, THE TERPOLYMERIZATES BEING MADE UP OF MACROMOLCULES IN WHICH THE ETHYLENE AND PROPYLENE UNITS PREDOMINATE AND THE DIOLEFIN UNITS, WHILE BEING PRESENT IN A PROPORTION SUCH THAT THE BANDS DUE TO THE DOUBLE BANDS THEREOF ARE READILY DISCERNIBLE IN THE I.R. SPECTRA OF THE TERPOLYMERS, ACCOUNT FOR LESS THAN 2% OF THE TOTAL UNITS FORMING THE MACROMOLECULES, THE TERPOLYMERIZATES BEING FURTHER CHARACTERIZED IN BEING ESSENTIALLY FREE OF HOMOPOLYMERS OF ANY OF THE STARTING MONOMERS.
Claim 2
Dependent Claim
101 words
SULFUR-VULCANIZABLE, ELASTOMERIC, SOLID, ESSENTIALLY AMORPHOUS, LINEAR, HIGH MOLECULAR WEIGHT TERPOLYMERIZATES OF CONJUGATED DIOLEFFINS SELECTED FROM THE GROUP CONSISTING OF BUTADIENE, ISOPRENE, AND PENTADIENE-1,3 WITH ETHYLENE AND PROPYLENE, THE TERPOLYMERIZATES BEING MADE UP OF MACROMOLCULES IN WHICH THE ETHYLENE AND PROPYLENE UNITS PREDOMINATE AND THE DIOLEFIN UNITS, WHILE BEING PRESENT IN A PROPORTION SUCH THAT THE BANDS DUE TO THE DOUBLE BANDS THEREOF ARE READILY DISCERNIBLE IN THE I.R. SPECTRA OF THE TERPOLYMERS, ACCOUNT FOR LESS THAN 2% OF THE TOTAL UNITS FORMING THE MACROMOLECULES, THE TERPOLYMERIZATES BEING FURTHER CHARACTERIZED IN BEING ESSENTIALLY FREE OF HOMOPOLYMERS OF ANY OF THE STARTING MONOMERS.
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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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |