US3005457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methyl cellulose sponge and method of making
Assignee: Ortho Pharmaceutical Corp
•
Filing: 1957-04-01
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Granted: 1961-10-24
•
Expires: 1977-04-01
Abstract
No abstract record available.
Inventors
- 👤 Millman Nathan
- 👤 Roger E Homm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:57
CPC Classifications
C; C08; C08J; C08J9/00; C08J2301/00; Y; Y10; Y10S; Y10S424/00; Y10S424/07
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
43 words
A WATER PERMEABLE SURGICAL SPONGE HAVING A MATRIX ESSENTIALLY OF METHYL CELLULOSE AND CHARACTERIZED BY SUBSTANTIALLY COMPLETE BIOLOGICAL ABSORBABILITY IN A LIVING ANIMAL BODY IN BETWEEN ABOUT 10 AND ABOUT 60 DAYS, AND HAVING A METHOXYL CONTENT OF FROM ABOUT 27.5 TO 32.0%.
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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) | 1964-10-23 | 1965-04-24 | 1965-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-23 | 1969-04-24 | 1969-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-23 | 1973-04-24 | 1973-10-24 | $7700.00 | Window Closed / Lapsed |