US2917533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialkylaminoalkyl esters of phosphonic acid and method of preparing same
Assignee: Virginia Carolina Chemical Corp
•
Filing: 1954-05-12
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Granted: 1959-12-15
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Expires: 1974-05-12
Abstract
No abstract record available.
Inventors
- 👤 Burger Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:19
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/30; C07F9/32; C07F9/3258; C07F9/3264; A; A01; A01N; A01N57/00; A01N57/18; A01N57/22; C07F9/38; C07F9/40; C07F9/4071; C07F9/4075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
METHOD FOR THE PREPARATION OF COMPOUNDS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
10 words
METHOD FOR THE PREPARATION OF COMPOUNDS OF 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) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |