US3072608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of ethylene
Assignee: Spencer Chemical Co
•
Filing: 1959-07-23
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Granted: 1963-01-08
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Expires: 1979-07-23
Abstract
No abstract record available.
Inventors
- 👤 William H Byler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:13
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
44 words
THE PROCESS OF POLYMERIZING A LOWER OLEFIN HAVING NOT MORE THAN THREE CARBONS WHICH COMPRISES CONTACTING SAID OLEFIN WITH A FREE RADICAL-PROVIDING ORGANIC PEROXIDE AND TRIPHENYLAMINE IN INTIMATE MIXTURE AT A POLYMERIZATION PRESSURE ABOVE 10,000 P.S.I. AND A TEMPERATURE FROM ABOUT 240*F. TO 375*F.
Claim 2
Dependent Claim
44 words
THE PROCESS OF POLYMERIZING A LOWER OLEFIN HAVING NOT MORE THAN THREE CARBONS WHICH COMPRISES CONTACTING SAID OLEFIN WITH A FREE RADICAL-PROVIDING ORGANIC PEROXIDE AND TRIPHENYLAMINE IN INTIMATE MIXTURE AT A POLYMERIZATION PRESSURE ABOVE 10,000 P.S.I. AND A TEMPERATURE FROM ABOUT 240*F. TO 375*F.
Claim 3
Dependent Claim
31 words
THE PROCESS FO POLYMERIZING ETHYLENE WITH A FREE RADICAL-PROVIDING ORGANIC PERROXIDE AND TRIPHENYLAMINE IN INTIMATE MIXTURE AT A POLYMERIZATION PRESSURE ABOVE 10,000 P.S.I. AND A TEMPERATURE FROM ABOUT 240*F. TO 375*F.
Claim 4
Dependent Claim
31 words
THE PROCESS FO POLYMERIZING ETHYLENE WITH A FREE RADICAL-PROVIDING ORGANIC PERROXIDE AND TRIPHENYLAMINE IN INTIMATE MIXTURE AT A POLYMERIZATION PRESSURE ABOVE 10,000 P.S.I. AND A TEMPERATURE FROM ABOUT 240*F. TO 375*F.
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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |