US3347840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process
Assignee: Union Carbide Corp
•
Filing: 1964-06-16
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Granted: 1967-10-17
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Expires: 1984-06-16
Abstract
No abstract record available.
Inventors
- 👤 Robert M Manyik
- 👤 Wellington E Walker
- 👤 Thomas P Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:05
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/10; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A PROCESS FOR PRODUCING POLYETHYLENE BY THE POLYMERIZATION OF ETHYLENE IN CONTACT WITH A CATALYST COMPLEX CONSISTING OF THE REACTION PRODUCT OF A POLY(HYDROCARBYLALUMINUM OXIDE) CONTAINING UNITS OF THE FORMULA:
Claim 2
Dependent Claim
30 words
A PROCESS FOR PRODUCING POLYETHYLENE BY THE POLYMERIZATION OF ETHYLENE IN CONTACT WITH A CATALYST COMPLEX CONSISTING OF THE REACTION PRODUCT OF A POLY(HYDROCARBYLALUMINUM OXIDE) CONTAINING UNITS OF THE FORMULA:
References Cited (Backward Citations)
US3242099A
Cited
US3231550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |