US2972603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyridine-ring containing resins and process of preparing them
Assignee: Reilly Tar and Chemical Corp
•
Filing: 1958-02-17
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Granted: 1961-02-21
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Expires: 1978-02-17
Abstract
No abstract record available.
Inventors
- 👤 Francis E Cislak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:48
CPC Classifications
C; C08; C08G; C08G75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
THE PROCESS OF PREPARING A RESINOUS COMPOSITION WHICH COMPRISES HEATING A MIXTURE OF ABOUT 8 MOLE PARTS OF SULFUR, ABOUT ONE MOLE PART OF A POLYALKYLPYRIDINE SELECTED FROM THE GROUP CONSISTING OF 2,6-LUTIDINE, 2,4,6-COLIDINE, 2,3,6-COLLIDINE, 2,4-LUTIDINE, 2-METHYL-4ETHYLPYRIDINE, AND 2,6-DIETHYLPYRIDINE, AND ABOUT ONE MOLE PART OF A POLYAMINE IN WHICH THE AMINO GROUPS ARE ATTACHED TO AN AROMATIC HYDROCARBON NUCLEUS.
Claim 2
Dependent Claim
59 words
THE PROCESS OF PREPARING A RESINOUS COMPOSITION WHICH COMPRISES HEATING A MIXTURE OF ABOUT 8 MOLE PARTS OF SULFUR, ABOUT ONE MOLE PART OF A POLYALKYLPYRIDINE SELECTED FROM THE GROUP CONSISTING OF 2,6-LUTIDINE, 2,4,6-COLIDINE, 2,3,6-COLLIDINE, 2,4-LUTIDINE, 2-METHYL-4ETHYLPYRIDINE, AND 2,6-DIETHYLPYRIDINE, AND ABOUT ONE MOLE PART OF A POLYAMINE IN WHICH THE AMINO GROUPS ARE ATTACHED TO AN AROMATIC HYDROCARBON NUCLEUS.
References Cited (Backward Citations)
US1761291A
Cited
US1949956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-21 | 1964-08-22 | 1965-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-21 | 1968-08-22 | 1969-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-21 | 1972-08-22 | 1973-02-21 | $7700.00 | Window Closed / Lapsed |