US4866170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable hydrate of penicillin derivative
Assignee: Tanabe Pharma Corp
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Filing: 1987-09-18
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Granted: 1989-09-12
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Expires: 2007-09-18
Abstract
Abstract A stable trihydrate of (2S, 5R, 6R)-6-{(2R)-2-[(2R)-2-amino-3-(N-methylcarbamoyl)propionamido]-2-(p-hydroxyphenyl)acetamido}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid and process for preparing the same are disclosed.
Inventors
- 👤 Susumu Ohshiro
- 👤 Masaru Senuma
- 👤 Mitsuyoshi Wagatsuma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:59
CPC Classifications
C; C07; C07D; C07D499/00; C07D499/04; C07D499/18; A; A61; A61P; A61P31/00; A61P31/04; C07D499/21; C07D499/44; C07D499/48; C07D499/58; C07D499/64; C07D499/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
(2S, 5R, 6R)-6-{(2R)-2[(2R)-2-Amino-3-(N-methylcarbamoyl)propionamido]-2-(p-hydroxyphenyl)acetamido}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid trihydrate.
Claim 2
Dependent Claim
5 words
(2S, 5R, 6R)-6-{(2R)-2[(2R)-2-Amino-3-(N-methylcarbamoyl)propionamido]-2-(p-hydroxyphenyl)acetamido}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid trihydrate.
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) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |