Patent US2915547A successfully refreshed from Google Patents.
US2915547A
Expired / Lapsed
US
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2-carbamyl-phenyl phosphoric acid and salts thereof
Assignee: F Hoffmann La Roche AG
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Filing: 1956-08-20
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Granted: 1959-12-01
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Expires: 1976-08-20
Abstract
No abstract record available.
Inventors
- 👤 Atherton Frank Ratcliffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:00
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2-CARBAMYL-PHENYL-PHOSPHORIC ACID AND THE SODIUM, MAGNESIUM AND CALCIUM SALT THEREOF.
Claim 2
Dependent Claim
18 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2-CARBAMYL-PHENYL-PHOSPHORIC ACID AND THE SODIUM, MAGNESIUM AND CALCIUM SALT THEREOF.
References Cited (Backward Citations)
US2320588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |