US2807610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenated dextran
Assignee: Avantor Performance Materials LLC
•
Filing: 1952-02-15
•
Granted: 1957-09-24
•
Expires: 1972-02-15
Abstract
No abstract record available.
Inventors
- 👤 Zief Morris
- 👤 Joseph R Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:45
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/0006; C08B37/0009; C08B37/0021
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
30 words
THE METHOD WHICH COMPRISES HYDROGENATING CLINICAL DEGRADED DEXTRAN WHICH IS REDUCING TO THE SOMOGYI REAGENT UNTIL THE DEGRADED DEXTRAN ABSORBS SUFFICIENT HYDROGEN TO BECOME SUBSTANTIALLY NON-REDUCING TO THE SOMOGYI REAGENT.
Claim 2
Independent Claim
30 words
THE METHOD WHICH COMPRISES HYDROGENATING CLINICAL DEGRADED DEXTRAN WHICH IS REDUCING TO THE SOMOGYI REAGENT UNTIL THE DEGRADED DEXTRAN ABSORBS SUFFICIENT HYDROGEN TO BECOME SUBSTANTIALLY NON-REDUCING TO THE SOMOGYI REAGENT.
Claim 3
Dependent Claim
17 words
AS A NEW PRODUCT, HYDROGENATED CLINICAL DEGRADED DEXTRAN, SAID PRODUCT BEING SUBSTANTIALY NON-REDUCING TO THE SOMOGYI REAGENT.
Claim 4
Dependent Claim
17 words
AS A NEW PRODUCT, HYDROGENATED CLINICAL DEGRADED DEXTRAN, SAID PRODUCT BEING SUBSTANTIALY NON-REDUCING TO THE SOMOGYI REAGENT.
Claim 5
Dependent Claim
26 words
HYDROGENATED DEXTRAN CONSISTING OF A MIXTURE OF DEXTRANS OF VARYING MOLECULAR WEIGHTS, THE ALDEHYDE END GROUPS OF WHICH HAVE SUBSTANTIALLY ALL BEEN REDUCTED TO ALCOHOL GROUPS.
Claim 6
Dependent Claim
26 words
HYDROGENATED DEXTRAN CONSISTING OF A MIXTURE OF DEXTRANS OF VARYING MOLECULAR WEIGHTS, THE ALDEHYDE END GROUPS OF WHICH HAVE SUBSTANTIALLY ALL BEEN REDUCTED TO ALCOHOL GROUPS.
References Cited (Backward Citations)
US1915431A
Cited
US2518235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |