US2691018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of chlorinating hydroxy triazines with thionyl chloride
Assignee: Wyeth Holdings LLC
•
Filing: 1951-07-10
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Granted: 1954-10-05
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Expires: 1971-07-10
Abstract
No abstract record available.
Inventors
- 👤 Asa W Joyce
- 👤 Wendell P Munro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:00
CPC Classifications
C; C07; C07D; C07D253/00; C07D253/02; C07D253/06; C07D253/065; C07D253/07; C07D253/075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
AN IMPROVED METHOD OF PREPARING A TRIAZINE VAT DYE HAVING THE FORMULA
Claim 2
Dependent Claim
12 words
AN IMPROVED METHOD OF PREPARING A TRIAZINE VAT DYE HAVING THE FORMULA
References Cited (Backward Citations)
US1904229A
Cited
US1897428A
Cited
US1867125A
Cited
FR796539A
Cited
GB449477A
Cited
US2361823A
Cited
US2489354A
Cited
US2489358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |