Patent US2599564A successfully refreshed from Google Patents.
US2599564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of polygalacturonic acid methylglycoside and salts thereof
Assignee: F Hoffmann La Roche AG
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Filing: 1950-02-25
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Granted: 1952-06-10
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Expires: 1970-02-25
Abstract
No abstract record available.
Inventors
- 👤 Fells John Lee Essex
- 👤 Berger Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:40
CPC Classifications
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Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
AS A SUBSTANTIALLY NON-TOXIC BLOOD ANTICOAGULANT, A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SUBSTANTIALLY FULLY SULFATED POLYGALACTURONIC ACID METHYLGLYCOSIDE, SUBSTANTIALLY FULLY SULFATED POLYGALACTURONIC ACID METHYLESTER METHYLGLYCOSIDE, SALTS OF SUBSTANTIALLY FULLY SULFATED POLYGALACTURONIC ACID METHYLGLYCOSIDE, AND SALTS OF SUBSTANTIALLY FULLY SULFATED POLYGALACTURONIC ACID METHYLESTER METHYLGLYCOSIDE.
Claim 2
Dependent Claim
45 words
AS A SUBSTANTIALLY NON-TOXIC BLOOD ANTICOAGULANT, A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SUBSTANTIALLY FULLY SULFATED POLYGALACTURONIC ACID METHYLGLYCOSIDE, SUBSTANTIALLY FULLY SULFATED POLYGALACTURONIC ACID METHYLESTER METHYLGLYCOSIDE, SALTS OF SUBSTANTIALLY FULLY SULFATED POLYGALACTURONIC ACID METHYLGLYCOSIDE, AND SALTS OF SUBSTANTIALLY FULLY SULFATED POLYGALACTURONIC ACID METHYLESTER METHYLGLYCOSIDE.
References Cited (Backward Citations)
US2284566A
Cited
US2508433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |