US3084146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatically unsaturated compounds and preparation thereof
Assignee: 3M Co
•
Filing: 1957-04-24
•
Granted: 1963-04-02
•
Expires: 1977-04-24
Abstract
No abstract record available.
Inventors
- 👤 Louis A Errede
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:27
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/025; C08G2261/00; C08G2261/30; C08G2261/34; C08G2261/342; C08G2261/3424
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A PROCESS WHICH COMPRISES POLYMERIZING A PARAQUINODIMETHANE IN SOLUTION UNDER ISOTHERMALLY CONTROLLED CONDITIONS AT A TEMPERATURE OF BETWEEN ABOUT -150* C. AND ABOUT -45*C.
Claim 2
Dependent Claim
24 words
A PROCESS WHICH COMPRISES POLYMERIZING A PARAQUINODIMETHANE IN SOLUTION UNDER ISOTHERMALLY CONTROLLED CONDITIONS AT A TEMPERATURE OF BETWEEN ABOUT -150* C. AND ABOUT -45*C.
References Cited (Backward Citations)
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GB673652A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |