US2772999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hemostatic surgical compositions and dressings
Assignee: Johnson and Johnson
•
Filing: 1952-06-06
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Granted: 1956-12-04
•
Expires: 1972-06-06
Abstract
No abstract record available.
Inventors
- 👤 Joseph N Masci
- 👤 William L George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:28
CPC Classifications
A; A61; A61L; A61L26/00; A61L26/0009; A61L26/0023; A61L15/00; A61L15/16; A61L15/22; A61L15/28; A61L2400/00; A61L2400/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A SURGICAL COMPOSITION FOR COAGULATING BLOOD CONTAINING A HEMOSTATIC AMOUNT, AT LEAST ABOUT 2%, OF CELLULOSE DERIVATIVE OF THE GROUP CONSISTING OF FREE ACID CELLULOSE GYLCOLIC ACID ETHER AND FREE ACID CELLULOSE HYDROXYPROPIONIC ACID ETHER HAVING DEGREE OF SUBSTITUTION AT LEAST ABOUT 0.5, AND DEGREE OF NEUTRALIZATION IN THE APPROXIMATE RANGE 0 TO 60% BUT SUFFICIENTLY LOW SO THAT THE FREE CARBOXY CONTENT OF THE CELLULOSE IS AT LEAST 0.5 PER GLUCOSE UNIT.
Claim 2
Dependent Claim
73 words
A SURGICAL COMPOSITION FOR COAGULATING BLOOD CONTAINING A HEMOSTATIC AMOUNT, AT LEAST ABOUT 2%, OF CELLULOSE DERIVATIVE OF THE GROUP CONSISTING OF FREE ACID CELLULOSE GYLCOLIC ACID ETHER AND FREE ACID CELLULOSE HYDROXYPROPIONIC ACID ETHER HAVING DEGREE OF SUBSTITUTION AT LEAST ABOUT 0.5, AND DEGREE OF NEUTRALIZATION IN THE APPROXIMATE RANGE 0 TO 60% BUT SUFFICIENTLY LOW SO THAT THE FREE CARBOXY CONTENT OF THE CELLULOSE IS AT LEAST 0.5 PER GLUCOSE UNIT.
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) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |