Patent US2831003A successfully refreshed from Google Patents.
US2831003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cycloborate esters of 16alpha, 17alpha-dihydroxy steroids
Assignee: Olin Corp
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Filing: 1957-11-05
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Granted: 1958-04-15
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Expires: 1977-11-05
Abstract
No abstract record available.
Inventors
- 👤 Gordon H Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:02
CPC Classifications
C; C07; C07J; C07J71/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A STEROID OF THE GENERAL FORMULA
Claim 2
Dependent Claim
6 words
A STEROID OF THE GENERAL FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |