US3004930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization catalyst
Assignee: Monsanto Chemicals Ltd
•
Filing: 1959-06-22
•
Granted: 1961-10-17
•
Expires: 1979-06-22
Abstract
No abstract record available.
Inventors
- 👤 Robert M Engelbrecht
- 👤 Joseph Q Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:49
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/20; C07C2/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A CATALYST CONSISTING ESSENTIALLY OF SILICA-ALUMINA CONTAINING FROM ABOUT 0.05 TO 10% BY WEIGHT OF TOTAL COMPOSITION OF A GALLIUM HALIDE.
Claim 2
Dependent Claim
21 words
A CATALYST CONSISTING ESSENTIALLY OF SILICA-ALUMINA CONTAINING FROM ABOUT 0.05 TO 10% BY WEIGHT OF TOTAL COMPOSITION OF A GALLIUM HALIDE.
References Cited (Backward Citations)
US2814599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |