Patent JPH0345030A successfully refreshed from Google Patents.
Patent US2923664A successfully refreshed from Google Patents.
US2923664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hemostatic product
Assignee: Johnson and Johnson
•
Filing: 1957-09-11
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Granted: 1960-02-02
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Expires: 1977-09-11
Abstract
No abstract record available.
Inventors
- 👤 Clayton M Cook
- 👤 Charles E Moser
- 👤 William H Ashton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:58
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/64; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2022; A61K9/205; A61K9/2054; A61L15/22; A61L15/28; A61L2400/00; A61L2400/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
A PROCESS FOR PREPARING AN ABSORBABLE SURGICAL PELLET COMPRISING A MIXTURE OF CELLULOSE GLYCOLIC ACID EITHER IN LIGHT FIBROUS POWER FORM HAVING A DEGREE OF POLYMERIZATION INDICATED BY VISCOSITY OF A 0.50% BY WEIGHT SOLUTION OF SAID CELLULOSE EITHER IN A 0.50 N. NAOH SOLUTION AT 25.50* C. THE RANGE ABOUT 5.7 TO NOT GREATER THAN 17.4 SECONDS AS DETERMINED IN MODIFIED OSTWALD-FENKSE VISCOSIMETER PIPETTE ASTM D-445 #300, AS COMPARED WITH A ZERO PIPETTE READING OF 5.0 SECONDS FOR A 0.50 N. NAOH SOLUTION AT THE SAME TEMPERATURE, SAID CELLULOSE ETHER HAVING A DEGREE OF SUBSTITUTION IN THE RANGE OF 0.5 TO 2.0, AND THE SODIUM SALT OF SUCH AN ETHER, SAID MIXTURE COMPRISING 2 TO 5 PARTS BY WEIGHT OF THE SODIUM SALT PER 100 PARTS OF THE MIXTURE THEREOF WITH THE SAID ACID ETHER, WHICH PROCESS COMPRISES FORMING SAID MIXTURE OF SAID CELLULOSE GLYCOLIC ACID ETHER WITH THE SEPARATELY PREPARED SODIUM SALT OF SUCH AN ETHER AND MIXING WATER THEREWITH IN THE AMOUNT IN THE RANGE OF 100 TO 200 PARTS OF WATER PER 100 PARTS OF SAID MIXTURE, GRANULATING THE RESUALTING WET MIXTURE, AND DRYING THE RESULTING GRANULES, AND THEN COMPRESSING INTO PELLETS.
Claim 2
Dependent Claim
196 words
A PROCESS FOR PREPARING AN ABSORBABLE SURGICAL PELLET COMPRISING A MIXTURE OF CELLULOSE GLYCOLIC ACID EITHER IN LIGHT FIBROUS POWER FORM HAVING A DEGREE OF POLYMERIZATION INDICATED BY VISCOSITY OF A 0.50% BY WEIGHT SOLUTION OF SAID CELLULOSE EITHER IN A 0.50 N. NAOH SOLUTION AT 25.50* C. THE RANGE ABOUT 5.7 TO NOT GREATER THAN 17.4 SECONDS AS DETERMINED IN MODIFIED OSTWALD-FENKSE VISCOSIMETER PIPETTE ASTM D-445 #300, AS COMPARED WITH A ZERO PIPETTE READING OF 5.0 SECONDS FOR A 0.50 N. NAOH SOLUTION AT THE SAME TEMPERATURE, SAID CELLULOSE ETHER HAVING A DEGREE OF SUBSTITUTION IN THE RANGE OF 0.5 TO 2.0, AND THE SODIUM SALT OF SUCH AN ETHER, SAID MIXTURE COMPRISING 2 TO 5 PARTS BY WEIGHT OF THE SODIUM SALT PER 100 PARTS OF THE MIXTURE THEREOF WITH THE SAID ACID ETHER, WHICH PROCESS COMPRISES FORMING SAID MIXTURE OF SAID CELLULOSE GLYCOLIC ACID ETHER WITH THE SEPARATELY PREPARED SODIUM SALT OF SUCH AN ETHER AND MIXING WATER THEREWITH IN THE AMOUNT IN THE RANGE OF 100 TO 200 PARTS OF WATER PER 100 PARTS OF SAID MIXTURE, GRANULATING THE RESUALTING WET MIXTURE, AND DRYING THE RESULTING GRANULES, AND THEN COMPRESSING INTO PELLETS.
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 |