US3093638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cephalosporin c
Assignee: National Research Development Corp UK
•
Filing: 1956-02-01
•
Granted: 1963-06-11
•
Expires: 1976-02-01
Abstract
No abstract record available.
Inventors
- 👤 Abraham Edward Penley
- 👤 Newton Guy Geoffrey Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:03
CPC Classifications
C; C07; C07D; C07D501/00; C07D501/14; C07D501/16; C07D501/20; C07D501/24; C07D501/26; C07D501/28; C12; C12P; C12P35/00; C12P35/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PRODUCT OF MANUFACTURE, THE ANTIBIOTIC SUBSTANCE, CEPHALOSPORIN C SUBSTANTIALLY FREE FROM CEPHALOSPORIN N; SAID CEPHALOSPORIN C CONTAINING CARBON, HYDROGEN, OXYGEN, NITROGEN AND SULPHUR ONLY AND BEING A MONOAMINODICARBOXYLIC ACID EFFECTIVE AGAINST BOTH GRAM POSITIVE AND GRAM NEGATIVE BATERIA; SOLUBLE IN WATER AND ALMOST INSOLUBLE IN ETHANOL AND ETHER; THE SODIUM SALT HAVING AN ULRA-VIOLET ABSORPTION MAXIMUM AT 260 MU AND AN INFRA-RED SPECTRUM SHOWING BANDS AT 2.94U, 3.06U, 5.6U, 5.77U, 6.05U, 6.29U, 6.57U, 7.17U AND 7.36U; STABLE IN AQUEOUS SOLUTION AT A PH OF 2.5; AND HAVING A SPECIFIC ROTATION (A)D20 OF +103* IN THE FORM OF ITS SODIUM SALT.
Claim 2
Dependent Claim
101 words
A PRODUCT OF MANUFACTURE, THE ANTIBIOTIC SUBSTANCE, CEPHALOSPORIN C SUBSTANTIALLY FREE FROM CEPHALOSPORIN N; SAID CEPHALOSPORIN C CONTAINING CARBON, HYDROGEN, OXYGEN, NITROGEN AND SULPHUR ONLY AND BEING A MONOAMINODICARBOXYLIC ACID EFFECTIVE AGAINST BOTH GRAM POSITIVE AND GRAM NEGATIVE BATERIA; SOLUBLE IN WATER AND ALMOST INSOLUBLE IN ETHANOL AND ETHER; THE SODIUM SALT HAVING AN ULRA-VIOLET ABSORPTION MAXIMUM AT 260 MU AND AN INFRA-RED SPECTRUM SHOWING BANDS AT 2.94U, 3.06U, 5.6U, 5.77U, 6.05U, 6.29U, 6.57U, 7.17U AND 7.36U; STABLE IN AQUEOUS SOLUTION AT A PH OF 2.5; AND HAVING A SPECIFIC ROTATION (A)D20 OF +103* IN THE FORM OF ITS SODIUM SALT.
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) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |