US3668198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
{60 -ureido-2,4,6-cycloheptatrienylmethylpenicillins
Assignee: ER Squibb and Sons LLC
•
Filing: 1970-06-01
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Granted: 1972-06-06
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Expires: 1990-06-01
Abstract
Abstract This invention relates to Alpha -ureido-2,4,6cycloheptatrienylmethylpenicillins as well as their salts, which are useful as antibacterial agents.
Inventors
- 👤 Jack Bernstein
- 👤 Patrick Andrew Diassi
- 👤 Frank Lee Weisenborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:38
CPC Classifications
C; C07; C07D; C07D499/00; C07D499/21; C07D499/44; C07D499/48; C07D499/58; C07D499/64; C07D499/66; A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/41; A61K31/425; A61K31/429; A61K31/43
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
14 words
A compound of claim 1 wherein R, R1, R2 and R3 each is hydrogen.
Claim 2
Dependent Claim
17 words
A compound of claim 1 wherein R, R2 and R3 each is hydrogen and R1 is sodium.
Claim 3
Dependent Claim
17 words
A compound of claim 1 wherein R is methyl and R1, R2 and R3 each is hydrogen.
Claim 4
Dependent Claim
17 words
A compound of claim 1 wherein R is chloro and R1, R2 and R3 each is hydrogen.
Claim 5
Dependent Claim
18 words
A compound of claim 1 wherein R, R1 and R2 each is hydrogen and R3 is lower alkyl.
Claim 6
Dependent Claim
17 words
A compound of claim 1 wherein R, R1 and R2 each is hydrogen and R3 is butyl.
Claim 7
Dependent Claim
17 words
A compound of claim 1 wherein R, R1 and R2 each is hydrogen and R3 is phenyl.
Claim 8
Dependent Claim
17 words
A compound of claim 1 wherein R, R1 and R2 each is hydrogen and R3 is acetyl.
Claim 9
Dependent Claim
20 words
A compound of claim 1 wherein R and R1 each is hydrogen and R2 and R3 each is lower alkyl.
Claim 10
Dependent Claim
12 words
A compound of claim 11 wherein each lower alkyl group is methyl.
Claim 11
Dependent Claim
17 words
A compound of claim 1 wherein R, R1 and R2 each is hydrogen and R3 is benzyl.
References Cited (Backward Citations)
CA746904A
Cited
US3531470A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |