US2828319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making crystalline cortisone acetate
Assignee: Pharmacia and Upjohn Co
•
Filing: 1957-01-10
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Granted: 1958-03-25
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Expires: 1977-01-10
Abstract
No abstract record available.
Inventors
- 👤 Barney J Magerlein
- 👤 Jack K Dale
- 👤 Louis W Wachtel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:44
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/56; A61K31/57; A61K31/573; C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
2 6.17 3.65 2.35 10.5 5.30 3.26 2.26 8.84 4.68 3.22 2.18 7.69 4.32 2.63 2.13 6.70 3.79 2.48 1.97
Claim 2
Dependent Claim
20 words
2 6.17 3.65 2.35 10.5 5.30 3.26 2.26 8.84 4.68 3.22 2.18 7.69 4.32 2.63 2.13 6.70 3.79 2.48 1.97
References Cited (Backward Citations)
US2671750A
Cited
US2779707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |