Patent US3122479A successfully refreshed from Google Patents.
US3122479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hemostatic surgical dressings
Assignee: Individual
•
Filing: 1957-11-14
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Granted: 1964-02-25
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Expires: 1977-11-14
Abstract
No abstract record available.
Inventors
- 👤 David F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:34
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/64; A61L15/22; A61L15/28; A61L2400/00; A61L2400/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
65 words
A BLOOD-WETTABLE, BLOOD ABSORPTIVE, HEMOSTATIC SURGICAL DRESSING IN SOLID FORM COMPRISING A DEGRADED, BRITTLE, POWDERED, HEMOSTATIC, NO2-OXIDIZED CELLULOSE OF FROM 13 TO 20 PERCENT CO2 EQUIVALENCY, IN WHICH IS SUBSTANTIALLY UNIFORMLY DISPERSED A RELATIVELY WATER-INSOLUBLE, BONDING MATERIAL, ABSORBABLE IN LIVE ANIMAL TISSUE AND SELECTED FROM THE CLASS CONSISTING OF CELLULOSE GLYCOLLIC ACID ETHER, HYDROXYETHYL CELLULOSE GLYCOLLIC ACID ETHER, CELLULOSE HYDROXYPROPIONIC ACID OTHER AND MIXTURE THEREOF.
Claim 2
Dependent Claim
65 words
A BLOOD-WETTABLE, BLOOD ABSORPTIVE, HEMOSTATIC SURGICAL DRESSING IN SOLID FORM COMPRISING A DEGRADED, BRITTLE, POWDERED, HEMOSTATIC, NO2-OXIDIZED CELLULOSE OF FROM 13 TO 20 PERCENT CO2 EQUIVALENCY, IN WHICH IS SUBSTANTIALLY UNIFORMLY DISPERSED A RELATIVELY WATER-INSOLUBLE, BONDING MATERIAL, ABSORBABLE IN LIVE ANIMAL TISSUE AND SELECTED FROM THE CLASS CONSISTING OF CELLULOSE GLYCOLLIC ACID ETHER, HYDROXYETHYL CELLULOSE GLYCOLLIC ACID ETHER, CELLULOSE HYDROXYPROPIONIC ACID OTHER AND MIXTURE THEREOF.
Claim 3
Dependent Claim
16 words
THE PRODUCT OF CLAIM 1 ATTACHED BY THE SAID BONDING MATERIAL TO A FARBIC BACKING MATERIAL.
Claim 4
Dependent Claim
40 words
A PACKAGE CONSISTING OF A PRESSURE-TIGHT CONTAINER HAVING A VALVE-CONTROLLED OPENING AND CONTAINING A HEMOSTATIC BLOOD WETTABLE, BLOOD-ABSORPTIVE, DEGRADED, BRITTLE, POWDERED, NO2-OXIDIZED CELLULOSE OF FROM 13 TO 20 PERCENT CO2 EQUIVALENCY; AND A SUBSTANTIALLY INERT AND NONTOXIC, VOLATILE, LIQUEFIED PROPELLANT.
Claim 5
Dependent Claim
40 words
A PACKAGE CONSISTING OF A PRESSURE-TIGHT CONTAINER HAVING A VALVE-CONTROLLED OPENING AND CONTAINING A HEMOSTATIC BLOOD WETTABLE, BLOOD-ABSORPTIVE, DEGRADED, BRITTLE, POWDERED, NO2-OXIDIZED CELLULOSE OF FROM 13 TO 20 PERCENT CO2 EQUIVALENCY; AND A SUBSTANTIALLY INERT AND NONTOXIC, VOLATILE, LIQUEFIED PROPELLANT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |