US2512698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of aromatic polyfulvenes
Assignee: Universal Oil Products Co
•
Filing: 1946-11-09
•
Granted: 1950-06-27
•
Expires: 1966-11-09
Abstract
No abstract record available.
Inventors
- 👤 Ralph B Thompson
- 👤 Herman S Bloch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:15
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A PROCESS OF PRODUCING A RESINOUS MATERIAL WHICH COMPRISES SUBJECTING TO A POLYMERIZING REACTION AT A TEMPERATURE OF FROM ABOUT 25*C. TO ABOUT 300*C. AN AROMATIC POLYFULVENE IN WHICH THE ARYL RADICAL IS ATTACHED TO THE ACYCLIC CARBON ATOM OF EACH OF THE FULVENE RADICALS.
Claim 2
Dependent Claim
45 words
A PROCESS OF PRODUCING A RESINOUS MATERIAL WHICH COMPRISES SUBJECTING TO A POLYMERIZING REACTION AT A TEMPERATURE OF FROM ABOUT 25*C. TO ABOUT 300*C. AN AROMATIC POLYFULVENE IN WHICH THE ARYL RADICAL IS ATTACHED TO THE ACYCLIC CARBON ATOM OF EACH OF THE FULVENE RADICALS.
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) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |