US2917433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable aqueous papain topical compositions
Assignee: Rystan Co Inc
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Filing: 1956-04-02
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Granted: 1959-12-15
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Expires: 1976-04-02
Abstract
No abstract record available.
Inventors
- 👤 Goldman Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:41
CPC Classifications
A; A61; A61K; A61K38/00; A61K38/16; A61K38/43; A61K38/46; A61K38/48; A61K38/4873
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A STABLE, PROTEOLYTIC COMPOSITION FOR USE IN TREATING WOUNDS WHICH REQUIRE DEBRIDEMENT COMPRISING PAPAIN IN AN AMOUNT FROM ABOUT 5 TO ABOUT 25% BY WEIGHT, UREA IN AN AMOUNT FROM ABOUT 5 TO ABOUT 25% BY WEIGHT, WATER IN AN AMOUNT AT LEAST ABOUT 5% BY WEIGHT, AND A BORON CONTAINING AGENT SELECTED FROM THE GROUP CONSISTING OF BORIC ACID, SODIUM BORATE, PYROBORIC ACID, SODIUM PYROBATE, MONOSODIUM BORATE, METABORIC ACID, SODIUM METABORATE AND MIXTURES OF THE FOREGOING IN AN AMOUNT FROM ABOUT 0.5 TO ABOUT 10% BY WEIGHT, SAID UREA BEING IN AN AMOUNT FROM ABOUT 1/2 TO ABOUT 2 PARTS BY WEIGHT PER PART OF PAPAIN.
Claim 2
Dependent Claim
107 words
A STABLE, PROTEOLYTIC COMPOSITION FOR USE IN TREATING WOUNDS WHICH REQUIRE DEBRIDEMENT COMPRISING PAPAIN IN AN AMOUNT FROM ABOUT 5 TO ABOUT 25% BY WEIGHT, UREA IN AN AMOUNT FROM ABOUT 5 TO ABOUT 25% BY WEIGHT, WATER IN AN AMOUNT AT LEAST ABOUT 5% BY WEIGHT, AND A BORON CONTAINING AGENT SELECTED FROM THE GROUP CONSISTING OF BORIC ACID, SODIUM BORATE, PYROBORIC ACID, SODIUM PYROBATE, MONOSODIUM BORATE, METABORIC ACID, SODIUM METABORATE AND MIXTURES OF THE FOREGOING IN AN AMOUNT FROM ABOUT 0.5 TO ABOUT 10% BY WEIGHT, SAID UREA BEING IN AN AMOUNT FROM ABOUT 1/2 TO ABOUT 2 PARTS BY WEIGHT PER PART OF PAPAIN.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |