US2861920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Therapeutic suspensions of steroids containing pvp and/or pva
Assignee: Pharmacia and Upjohn Co
•
Filing: 1954-05-04
•
Granted: 1958-11-25
•
Expires: 1974-05-04
Abstract
No abstract record available.
Inventors
- 👤 Jack K Dale
- 👤 Samuel L Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:22
CPC Classifications
A; A61; A61K; A61K47/00; A61K47/30; A61K47/32; A61K9/00; A61K9/0012; A61K9/0014
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
AN AQUEOUS THERAPEUTIC SUSPENSION COMPRISING A WATER-INSOLUBLE STEROID SUBJECT TO CRYSTAL GROWTH AND FROM 0.01 TO TEN PERCENT WEIGHT BY VOLUME OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF POLYVINYL PYRROLIDONE, POLYVINYL ALCOHOL, AND A MIXTURE THEREOF.
Claim 2
Dependent Claim
38 words
AN AQUEOUS THERAPEUTIC SUSPENSION COMPRISING A WATER-INSOLUBLE STEROID SUBJECT TO CRYSTAL GROWTH AND FROM 0.01 TO TEN PERCENT WEIGHT BY VOLUME OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF POLYVINYL PYRROLIDONE, POLYVINYL ALCOHOL, AND A MIXTURE THEREOF.
References Cited (Backward Citations)
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Cited
US2394628A
Cited
US2671749A
Cited
US2793156A
Cited
US2671750A
Cited
DE880046C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |