Patent US2764159A successfully refreshed from Google Patents.
US2764159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorbable products
Assignee: Johnson and Johnson
•
Filing: 1952-06-06
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Granted: 1956-09-25
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Expires: 1972-06-06
Abstract
No abstract record available.
Inventors
- 👤 Joseph N Masci
- 👤 William H Ashton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:13
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/64; A61L15/22; A61L15/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
AS A COMPLETELY ABSORBABLE SURGICAL PRODUCT, CELLULOSE GLYCOLIC ACID ETHER HAVING DEGREE OF POLYMERIZATION INDICATED BY VISCOSITY OIF A 0.50% BY WEIGHT SOLUTION OF SAID CELLULOSE ETHER IN A 0.50 N. NAOH SOLUTION AT 25.50* C. IN THE RANGE ABOUT 5.7 TO NOT GREATER THAN 17.4 SECONDS AS DETERMINED IN A MODIFIED OSTWALD-FENSKE VISCOSIMETER PIPETTE A. S. T. M. 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 DEGREE OF SUBSTITUTION ABOVE ABOUT 0.5 AND DEGREE OF NEUTRALIZATION IN THE APPROXIMATE RANGE 0 TO 60%.
Claim 2
Dependent Claim
102 words
AS A COMPLETELY ABSORBABLE SURGICAL PRODUCT, CELLULOSE GLYCOLIC ACID ETHER HAVING DEGREE OF POLYMERIZATION INDICATED BY VISCOSITY OIF A 0.50% BY WEIGHT SOLUTION OF SAID CELLULOSE ETHER IN A 0.50 N. NAOH SOLUTION AT 25.50* C. IN THE RANGE ABOUT 5.7 TO NOT GREATER THAN 17.4 SECONDS AS DETERMINED IN A MODIFIED OSTWALD-FENSKE VISCOSIMETER PIPETTE A. S. T. M. 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 DEGREE OF SUBSTITUTION ABOVE ABOUT 0.5 AND DEGREE OF NEUTRALIZATION IN THE APPROXIMATE RANGE 0 TO 60%.
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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) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |