US2507244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical gelatin dusting powder and process for preparing same
Assignee: Pharmacia and Upjohn Co
•
Filing: 1947-04-14
•
Granted: 1950-05-09
•
Expires: 1967-04-14
Abstract
No abstract record available.
Inventors
- 👤 John T Correll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:55
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/64; A61L15/22; A61L15/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A STERILE, SUBSTANTIALLY WATER-INSOLUBLE, NONANTIGENIC, COMPLETELY PROTEOLYTICALLY DIEGESTIBLE POWDER SUITABLE FOR SURGICAL LUBRICATION CONSISTING ESSENTIALLY OF GELATIN THAT HAS BEEN HARDENED TO THE STAGE OF SUBSTANTIAL WATER-INSOLUBILITY AND THAT HAS THEREAFTER BEEN PULVERIZED AND SUBJECTED TO HEAT TEATMENT, WHICH POWDERED MATERIAL IS COMPLETELY DIGESTIBLE WITHIN APPROXIMATELY 0.5 HOUR IN A 5 PERCENT AND WITHIN APPROXIMATELY 6 HOURS IN A 0.5 PERCCENT AQUEOUS PEPSIN SOLUTION.
Claim 2
Dependent Claim
64 words
A STERILE, SUBSTANTIALLY WATER-INSOLUBLE, NONANTIGENIC, COMPLETELY PROTEOLYTICALLY DIEGESTIBLE POWDER SUITABLE FOR SURGICAL LUBRICATION CONSISTING ESSENTIALLY OF GELATIN THAT HAS BEEN HARDENED TO THE STAGE OF SUBSTANTIAL WATER-INSOLUBILITY AND THAT HAS THEREAFTER BEEN PULVERIZED AND SUBJECTED TO HEAT TEATMENT, WHICH POWDERED MATERIAL IS COMPLETELY DIGESTIBLE WITHIN APPROXIMATELY 0.5 HOUR IN A 5 PERCENT AND WITHIN APPROXIMATELY 6 HOURS IN A 0.5 PERCCENT AQUEOUS PEPSIN SOLUTION.
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) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |