US3567653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copoymer catalyst system and product
Assignee: JOHN H STAIB
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Filing: 1969-07-16
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Granted: 1971-03-02
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Expires: 1989-07-16
Abstract
Abstract A CATALYST USEFU FOR COPOLYMERIZING ETHYLENE AND A HIGHER ALPHA OLEFIN IS COMPOSED OF AN ALKYL ALUMINUM AND THE REACTION PRODUCT OF, A VANADIUM COMPOUND (SUCH AS VOCL3) AND AN ALKYL TITANAT. RESULTING COPOLYMERS MAY HAVE A VERY HIGH GREEN STRENGTH AS WELL AS OTHER DESIRABLE PROPERTIES.
Inventors
- 👤 Joseph Wagensommer
- 👤 Richard J Lauria
- 👤 John H Staib
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:12
CPC Classifications
C; C08; C08F; C08F210/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |