US3079314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sonochemical processes for the preparation of antimicrobial agents
Assignee: Smith Kline & French Laboratories Ltd
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Filing: 1962-05-07
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Granted: 1963-02-26
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Expires: 1982-05-07
Abstract
No abstract record available.
Inventors
- 👤 John R E Hoover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:44
CPC Classifications
C; C12; C12P; C12P35/00; C12P35/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN THE PROCESS FOR THE CHEMICAL MODIFICATION OF AT LEAST ONE AMPHOTERIC GROUP OF 7-AMINOCEPHALOSPORANIC ACID UNDER SUBSTANTIALLY NON-AQUEOUS CONDITIONS, THE STEP WHICH COMPRISES SUBJECTING A MIXTURE OF 7-AMINOCEPHALOSPORANIC ACID AND THE REAGENT FOR SAID MODIFICATION IN A SUBSTANTIALLY NON-AQUEOUS, INERT, POLAR, ORGANIC SOLVENT TO ULTRASONIC VIBRATIONS OF A FREQUENCY IN THE RANGE OF FROM ABOUT 35,000 CYCLES PER SECOND TO ABOUT 90,000 CYCLES PER SECOND.
Claim 2
Dependent Claim
66 words
IN THE PROCESS FOR THE CHEMICAL MODIFICATION OF AT LEAST ONE AMPHOTERIC GROUP OF 7-AMINOCEPHALOSPORANIC ACID UNDER SUBSTANTIALLY NON-AQUEOUS CONDITIONS, THE STEP WHICH COMPRISES SUBJECTING A MIXTURE OF 7-AMINOCEPHALOSPORANIC ACID AND THE REAGENT FOR SAID MODIFICATION IN A SUBSTANTIALLY NON-AQUEOUS, INERT, POLAR, ORGANIC SOLVENT TO ULTRASONIC VIBRATIONS OF A FREQUENCY IN THE RANGE OF FROM ABOUT 35,000 CYCLES PER SECOND TO ABOUT 90,000 CYCLES PER SECOND.
References Cited (Backward Citations)
US2941995A
Cited
US2951839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |