Patent US4336200A successfully refreshed from Google Patents.
US4336200A
Expired / Lapsed
US
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17α-Acyloxy-5β-corticoids
Assignee: Pharmacia and Upjohn Co
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Filing: 1981-01-28
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Granted: 1982-06-22
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Expires: 2001-01-28
Abstract
Abstract 17α-Acyloxy-5β-pregnanes (I) and 17α-acyloxy-5α-pregnanes (IV) have an excellent activity split providing high topical antiinflammatory activity with very low systemic side effects.
Inventors
- 👤 Donald E. Ayer
- 👤 Carl A. Schlagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:28
CPC Classifications
C; C07; C07J; C07J7/00; C07J7/0005; C07J7/001; C07J7/004; C07J7/005; C07J7/0055; C07J21/00; C07J31/00; C07J31/006; C07J5/00; C07J5/0046; C07J5/0053; C07J5/0061; C07J5/0069; C07J5/0076; C07J51/00; C07J7/0045; C07J7/008; C07J7/0085; C07J71/00; C07J71/0005; C07J71/001; C07J71/0015
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
2 words
21-Chloro-6α,9α-difluoro-11β,17α-dihydroxy-16β-methyl-5β-pregnane-3,20-dione 17-propionate.
Claim 2
Dependent Claim
2 words
21-Chloro-6α,9α-difluoro-11β,17α-dihydroxy-16β-methyl-5β-pregnane-3,20-dione 17-propionate.
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) | 1985-06-21 | 1985-12-21 | 1986-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-21 | 1989-12-21 | 1990-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-21 | 1993-12-21 | 1994-06-22 | $7700.00 | Window Closed / Lapsed |