Patent US2494284A successfully refreshed from Google Patents.
US2494284A
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US
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Cyanoalkyl phosphates and method of preparation
Assignee: Wyeth Holdings LLC
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Filing: 1949-01-12
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Granted: 1950-01-10
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Expires: 1969-01-12
Abstract
No abstract record available.
Inventors
- 👤 Jack T Cassaday
- 👤 Erick I Hoegberg
- 👤 Bruce D Gleissner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:30
CPC Classifications
A; A01; A01N; A01N57/00; A01N57/10; C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/1651
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
PHOSPHATE ESTERS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
6 words
PHOSPHATE ESTERS OF THE GENERAL FORMULA
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) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |