US2679508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphoric acid esters and their production
Assignee: Novartis AG
•
Filing: 1951-04-19
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Granted: 1954-05-25
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Expires: 1971-04-19
Abstract
No abstract record available.
Inventors
- 👤 Gysin Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:03
CPC Classifications
A; A01; A01N; A01N57/00; A01N57/10; A01N57/12; C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/117; C07F9/16; C07F9/165; C07F9/177
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A PHOSPHORIC ACID ESTER OF THE FORMULA
Claim 2
Dependent Claim
7 words
A PHOSPHORIC ACID ESTER OF THE FORMULA
References Cited (Backward Citations)
US2318296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |