Patent US2640047A successfully refreshed from Google Patents.
US2640047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction products of a polyhalogenated compound and a triazine derivative and methods of preparing the same
Assignee: Wyeth Holdings LLC
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Filing: 1951-05-10
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Granted: 1953-05-26
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Expires: 1971-05-10
Abstract
No abstract record available.
Inventors
- 👤 Jack T Thurston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:21
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/02; C08G75/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A COMPOSITION COMPRISING A SYNTHETIC POLYMERIC MATERIAL OBTAINED BY EFFECTING REACTION UNDER HEAT BETWEEN INGREDIENTS INCLUDING (1) A TRIAZINE DERIVATIVE REPRESENTED BY THE GENERAL FORMULA-
Claim 2
Dependent Claim
25 words
A COMPOSITION COMPRISING A SYNTHETIC POLYMERIC MATERIAL OBTAINED BY EFFECTING REACTION UNDER HEAT BETWEEN INGREDIENTS INCLUDING (1) A TRIAZINE DERIVATIVE REPRESENTED BY THE GENERAL FORMULA-
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) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |