US3123592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Czhsci
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
•
Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:05
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE PROCESS OF POLYMERIZING ISOBUTYLENE IN THE LIQUID PHASE WHICH COMPRISES USING A CATALYST CONSISTING OF DIETHYLALUMINUM MONOCHLORIDE AND USING, AS A REACTION MEDIUM, A SOLVENT SELECTED FROM THE GROUP CONSISTING OF ETHYLCHLORIDE, ETHYLIODIDE, ETHYLBROMIDE, CHLOROBENZENE, BROMOBENZENE AND IODOBENZENE SAID SOLVENT BEING A LIQUID UNDER POLYMERIZATION CONDITIONS AND BEING INERT TO SAID DIETHYLALUMINUM MONOCHLORIDE CATALYST.
Claim 2
Dependent Claim
55 words
THE PROCESS OF POLYMERIZING ISOBUTYLENE IN THE LIQUID PHASE WHICH COMPRISES USING A CATALYST CONSISTING OF DIETHYLALUMINUM MONOCHLORIDE AND USING, AS A REACTION MEDIUM, A SOLVENT SELECTED FROM THE GROUP CONSISTING OF ETHYLCHLORIDE, ETHYLIODIDE, ETHYLBROMIDE, CHLOROBENZENE, BROMOBENZENE AND IODOBENZENE SAID SOLVENT BEING A LIQUID UNDER POLYMERIZATION CONDITIONS AND BEING INERT TO SAID DIETHYLALUMINUM MONOCHLORIDE CATALYST.
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) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |