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Patent US2736726A successfully refreshed from Google Patents.
US2736726A
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Basic phosphoric acid esters
Assignee: Novartis AG
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Filing: 1953-03-16
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Granted: 1956-02-28
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Expires: 1973-03-16
Abstract
No abstract record available.
Inventors
- 👤 Gaetzi Karl
- 👤 Muller Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:34
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6527; C07F9/6533; A; A01; A01N; A01N57/00; A01N57/10; C07F9/06; C07F9/16; C07F9/165; C07F9/1651; C07F9/553; C07F9/572; C07F9/576; C07F9/59
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A BASIC PHOSPHORIC ACID ESTER CORRESPONDING TO THE FORMULA:
Claim 2
Dependent Claim
9 words
A BASIC PHOSPHORIC ACID ESTER CORRESPONDING TO THE 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) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |