Patent US2497323A successfully refreshed from Google Patents.
US2497323A
Expired / Lapsed
US
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Polymerization of ethylene
Assignee: EIDP Inc
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Filing: 1949-06-15
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Granted: 1950-02-14
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Expires: 1969-06-15
Abstract
No abstract record available.
Inventors
- 👤 Milton J Roedel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:38
CPC Classifications
C; C08; C08F; C08F110/00; C08F110/02; Y; Y10; Y10S; Y10S260/00; Y10S260/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
THE PROCESS FOR POLYERIZING ETHYLENE WHICH COMPRISES HEATING ETHYLENE AT A TEMPERATURE F 70* TO 250*C. IN THE PRESENCE OF 0.005% TO 2.0%, BASED ON THE TOTAL WEIGHT OF THE REACTION MIXTURE, OF A TERTIARY ALKYL PERCARBOXYLATE OF THE FORMULA
Claim 2
Dependent Claim
40 words
THE PROCESS FOR POLYERIZING ETHYLENE WHICH COMPRISES HEATING ETHYLENE AT A TEMPERATURE F 70* TO 250*C. IN THE PRESENCE OF 0.005% TO 2.0%, BASED ON THE TOTAL WEIGHT OF THE REACTION MIXTURE, OF A TERTIARY ALKYL PERCARBOXYLATE OF THE FORMULA
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) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |