Patent US4309347A successfully refreshed from Google Patents.
US4309347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Penicillanoyloxymethyl penicillanate 1,1,1',1'-tetraoxide
Assignee: Pfizer Inc
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Filing: 1980-09-10
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Granted: 1982-01-05
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Expires: 2000-09-10
Abstract
Abstract Penicillanoyloxymethyl penicillanate 1,1,1',1'-tetraoxide; a method of treating a bacterial infection in a mammalian subject using penicillanoyloxymethyl penicillanate 1,1,1',1'-tetraoxide and a beta-lactam antibiotic; and pharmaceutical compositions comprising a suspension of penicillanoyloxymethyl penicillanate 1,1,1',1'-tetraoxide in water.
Inventors
- 👤 Eric C. Bigham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:50
CPC Classifications
C; C07; C07D; C07D499/00; A; A61; A61P; A61P31/00; A61P31/04; C07D519/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
3 words
Penicillanoyloxymethyl penicillanate 1,1,1',1'-tetraoxide.
Claim 2
Dependent Claim
3 words
Penicillanoyloxymethyl penicillanate 1,1,1',1'-tetraoxide.
References Cited (Backward Citations)
US3850908A
Cited
GB1303491A
Cited
US3869449A
Cited
DE2713683A1
Cited
DE2824535C3
Cited
BE881675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-04 | 1985-07-06 | 1986-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-04 | 1989-07-06 | 1990-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-04 | 1993-07-06 | 1994-01-05 | $7700.00 | Window Closed / Lapsed |