US3055875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified ethylene polymers
Assignee: Union Carbide Corp
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Filing: 1960-07-05
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Granted: 1962-09-25
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Expires: 1980-07-05
Abstract
No abstract record available.
Inventors
- 👤 Richard A Walther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:46
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR PRODUCING BUTADIENE-MODIFIED ETHYLONE POLYMERS WHICH COMPRISES HEATING ETHYLENE IN THE PRESENCE OF FREE RADICAL CATALYST AND 1,3-BUTADLENE IN AN AMOUNT OF FROM 10 P.P.M. TO 300 P.P.M. BY VOLUME OF SAID BUTADIENE BASED ON THE AMOUNT OF ETHYLENE PRESENT AT A TEMPERATURE OF FROM ABOUT 240*C. TO ABOUT 300* C. AND AT A PRESSURE OF FROM ABOUT 14,000 P.S.I. TO ABOUT 100 P.S.I.
Claim 2
Dependent Claim
66 words
A PROCESS FOR PRODUCING BUTADIENE-MODIFIED ETHYLONE POLYMERS WHICH COMPRISES HEATING ETHYLENE IN THE PRESENCE OF FREE RADICAL CATALYST AND 1,3-BUTADLENE IN AN AMOUNT OF FROM 10 P.P.M. TO 300 P.P.M. BY VOLUME OF SAID BUTADIENE BASED ON THE AMOUNT OF ETHYLENE PRESENT AT A TEMPERATURE OF FROM ABOUT 240*C. TO ABOUT 300* C. AND AT A PRESSURE OF FROM ABOUT 14,000 P.S.I. TO ABOUT 100 P.S.I.
References Cited (Backward Citations)
US2938515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |