US2537979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidized cellulose suture
Assignee: Ethicon Inc
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Filing: 1949-11-25
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Granted: 1951-01-16
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Expires: 1969-11-25
Abstract
No abstract record available.
Inventors
- 👤 Eberl James Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:26
CPC Classifications
A; A61; A61L; A61L17/00; A61L17/06; A61L17/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A THREAD OF SUTURE TENACITY COMPRISING CELLULOSE OXIDIZED SELECTIVELY WITH NITROGEN DIOXIDE BY CONVERTING PRIMARY ALCOHOL GROUPS TO CARBOXYL GROUPS TO AN EXTENT NOT GREATER THAN 42.6% OF THE THEORETICAL OXIDATION WITH NITROGEN DIOXIDE, OXIDATION TO THIS EXTENT BEING SUFFICIENT TO CAUSE REDUCTION OF THE THREAD TO ZERO STRENGTH AT THE PH OF BODY TISSUE (7.3-7.5) IN A PERIOD OF AT LEAST FIVE DAYS.
Claim 2
Dependent Claim
64 words
A THREAD OF SUTURE TENACITY COMPRISING CELLULOSE OXIDIZED SELECTIVELY WITH NITROGEN DIOXIDE BY CONVERTING PRIMARY ALCOHOL GROUPS TO CARBOXYL GROUPS TO AN EXTENT NOT GREATER THAN 42.6% OF THE THEORETICAL OXIDATION WITH NITROGEN DIOXIDE, OXIDATION TO THIS EXTENT BEING SUFFICIENT TO CAUSE REDUCTION OF THE THREAD TO ZERO STRENGTH AT THE PH OF BODY TISSUE (7.3-7.5) IN A PERIOD OF AT LEAST FIVE DAYS.
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) | 1954-01-15 | 1954-07-17 | 1955-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-15 | 1958-07-17 | 1959-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-15 | 1962-07-17 | 1963-01-16 | $7700.00 | Window Closed / Lapsed |