Patent US3537736A successfully refreshed from Google Patents.
Patent US3004889A successfully refreshed from Google Patents.
US3004889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclobutane analgesics
Assignee: Bristol Myers Co
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Filing: 1960-05-16
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Granted: 1961-10-17
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Expires: 1980-05-16
Abstract
No abstract record available.
Inventors
- 👤 Kuna Samuel
- 👤 Armin G Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:48
CPC Classifications
C; C07; C07C; C07C35/00; C07C35/02; C07C35/04; C07C35/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
AN ANALGESIC COMPOSITION IN UNIT DOSAGE FORM COMPRISING A SIGNIFICANT QUANTITY OF A PHARMACEUTICAL CARRIER AND FROM ABOUT 0.1 GRAIN TO ABOUT 20 GRAINS OF A CYCLOBUTANE DERIVATIVE HAVING THE FOLLOWING GENERIC FORMULA:
Claim 2
Dependent Claim
33 words
AN ANALGESIC COMPOSITION IN UNIT DOSAGE FORM COMPRISING A SIGNIFICANT QUANTITY OF A PHARMACEUTICAL CARRIER AND FROM ABOUT 0.1 GRAIN TO ABOUT 20 GRAINS OF A CYCLOBUTANE DERIVATIVE HAVING THE FOLLOWING GENERIC FORMULA:
References Cited (Backward Citations)
US2936324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |