US2923704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cycloamylose sulfates and derivatives thereof
Assignee: F Hoffmann La Roche AG
•
Filing: 1957-05-15
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Granted: 1960-02-02
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Expires: 1977-05-15
Abstract
No abstract record available.
Inventors
- 👤 Berger Leo
- 👤 Lee John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:33
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/0006; C08B37/0009; C08B37/0012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A COMPOUND OF THE GROUP CONSISTING OF CYCLOHEXAAMYLOSE SULFATE, CYCLOHEPTAAMYLOSE SULFATE AND SALTS THEREOF.
Claim 2
Dependent Claim
14 words
A COMPOUND OF THE GROUP CONSISTING OF CYCLOHEXAAMYLOSE SULFATE, CYCLOHEPTAAMYLOSE SULFATE AND SALTS THEREOF.
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) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |