US3379701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of ethylene, alpha monoolefin and cyclopentadiene
Assignee: EIDP Inc
•
Filing: 1963-05-22
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Granted: 1968-04-23
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Expires: 1983-05-22
Abstract
No abstract record available.
Inventors
- 👤 Gladding Edward Karcher
- 👤 Schroeder Herman Elbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:20
CPC Classifications
C; C08; C08F; C08F210/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A RANDOM AMORPHOUS, NORMALLY-SOLID, SULFUR-CURABLE COPOLYMER CONTAINING FROM ABOUT 20 TO 75 WEIGHT PERCENT ETHYLENE UNITS, FROM ABOUT 0.1 TO 2 GRAM-MOLES OF CYCLOPENTADIENE UNITS PER KILOGRAM OF POLYMER, AND THE REMAINDER BEING AT LEAST ONE A-MONOOLEFIN OF THE FORMULA CH2=CH-R WHEREIN R IS AN ALKYL GROUP OF FROM ABOUT 1 TO 10 CARBON ATOMS, SAID COPOLYMER BEING CAPABLE OF REACTING WITH AT LEAST ABOUT 0.3 GRAM-MOLE OF BROMINE PER KILOGRAM OF COPOLYMER IN A CCL4 SOLUTION AT 25*C. OVER A 2-HOUR PERIOD.
Claim 2
Dependent Claim
83 words
A RANDOM AMORPHOUS, NORMALLY-SOLID, SULFUR-CURABLE COPOLYMER CONTAINING FROM ABOUT 20 TO 75 WEIGHT PERCENT ETHYLENE UNITS, FROM ABOUT 0.1 TO 2 GRAM-MOLES OF CYCLOPENTADIENE UNITS PER KILOGRAM OF POLYMER, AND THE REMAINDER BEING AT LEAST ONE A-MONOOLEFIN OF THE FORMULA CH2=CH-R WHEREIN R IS AN ALKYL GROUP OF FROM ABOUT 1 TO 10 CARBON ATOMS, SAID COPOLYMER BEING CAPABLE OF REACTING WITH AT LEAST ABOUT 0.3 GRAM-MOLE OF BROMINE PER KILOGRAM OF COPOLYMER IN A CCL4 SOLUTION AT 25*C. OVER A 2-HOUR PERIOD.
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) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |