US3919196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Penicillin esters
Assignee: Beecham Group PLC
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Filing: 1974-04-22
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Granted: 1975-11-11
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Expires: 1994-04-22
Abstract
Abstract Combination salts of substituted isoxazole penicillanic acids and phthalide penicillanates are described.
Inventors
- 👤 Harry Ferres
- 👤 John Peter Clayton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:25
CPC Classifications
C; C07; C07D; C07D499/00; A; A61; A61P; A61P31/00; A61P31/04; C07C; C07C51/00; C07C51/16; C07C51/31; C07D307/00; C07D307/77; C07D307/87; C07D307/88; C07D317/00; C07D317/08; C07D317/44; C07D317/46; C07D317/48; C07D317/50; C07D317/58; C07D333/00; C07D333/50; C07D333/72; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/55
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
12 words
THE COMBINATION SALT OF 6(3-(2-CHLORO-6-FLUOROPHENYL)5-METHYL ISOXAZOLE-4-CARBAMIDO) PENICILLANIC ACID AND PHTHALIDE 6(D(-)A-AMINO-PHENYLACETAMIDO) PENICILLANATE.
Claim 2
Dependent Claim
12 words
THE COMBINATION SALT OF 6(3-(2-CHLORO-6-FLUOROPHENYL)5-METHYL ISOXAZOLE-4-CARBAMIDO) PENICILLANIC ACID AND PHTHALIDE 6(D(-)A-AMINO-PHENYLACETAMIDO) PENICILLANATE.
Claim 3
Dependent Claim
13 words
The combination salt of 6(3-(2-chloro-6-fluorophenyl)-5-methyl isoxazole-4-carbamido) penicillanic acid and phthalide 6((hexahydro-1H-azepin-1-yl) methyleneamino) penicillanate.
Claim 4
Dependent Claim
13 words
The combination salt of 6(3-(2-chloro-6-fluorophenyl)-5-methyl isoxazole-4-carbamido) penicillanic acid and phthalide 6((hexahydro-1H-azepin-1-yl) methyleneamino) penicillanate.
References Cited (Backward Citations)
GB1175590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |