US2889318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sterol aminoalkyl carbonates
Assignee: GD Searle LLC
•
Filing: 1957-02-18
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Granted: 1959-06-02
•
Expires: 1977-02-18
Abstract
No abstract record available.
Inventors
- 👤 Clarence G Bergstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:06
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07J; C07J41/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A MEMBER OF THE CLASS CONSISTING OF BASES AND NONTOXIC SALTS THEREOF, SAID BASES BEING CARBONATES OF THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
20 words
A MEMBER OF THE CLASS CONSISTING OF BASES AND NONTOXIC SALTS THEREOF, SAID BASES BEING CARBONATES OF THE STRUCTURAL 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) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |