US2887435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized vasoconstrictor-enzyme preparation
Assignee: Maple Leaf Foods Inc
•
Filing: 1957-06-13
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Granted: 1959-05-19
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Expires: 1977-06-13
Abstract
No abstract record available.
Inventors
- 👤 Ralph P D Witty
- 👤 James A Drum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:21
CPC Classifications
C; C12; C12N; C12N11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A THEREAPEUTIC COMPOSITION COMPRISING AN AQUEOUS SOLUTION CONTAININ A MINOR BUT EFFECTIVE QUANTITY FOR NASAL MEDICATION OF A VASOCONSTRICTOR COMPOUND SELECTED FROM THE GROUP CONSISTING OF PHENYLEPHRINE, EPHEDRINE, TUAMINE AND THE NONTOXIC WATER-SOLUBLE INORGANC SALTS THEREOF, FROM ABOUT 10 TO ABOUT 100 MG. PER 100 ML. OF SOLUTION OF A PROTEOLYTIC ENZYME SELECTED FROM THE GROUP CONSISTING OF TRYPSIN AND CHYMOTRYPSIN, AND A QUANTITY OF AN ENZYME SUBSTRATE SUFFICIENT TO SUBSTANTIALLY STABILIZE THE ENZYME ACTIVITY AND PROTECT SAID ENZYME FROM INHIBITION BY SAID VASOCONSTRICTOR COMPOUND SO THAT SAID ENZYME IS EFFECTIVE FOR A PERIOD OF AT LEAST 5 DAYS, SAID ENZYME SUBSTRATE BEING SELECTED FROM THE GROUP CONSISTING OF GELATIN, HYDROLYZED GELATIN, AND COLLAGEN.
Claim 2
Dependent Claim
114 words
A THEREAPEUTIC COMPOSITION COMPRISING AN AQUEOUS SOLUTION CONTAININ A MINOR BUT EFFECTIVE QUANTITY FOR NASAL MEDICATION OF A VASOCONSTRICTOR COMPOUND SELECTED FROM THE GROUP CONSISTING OF PHENYLEPHRINE, EPHEDRINE, TUAMINE AND THE NONTOXIC WATER-SOLUBLE INORGANC SALTS THEREOF, FROM ABOUT 10 TO ABOUT 100 MG. PER 100 ML. OF SOLUTION OF A PROTEOLYTIC ENZYME SELECTED FROM THE GROUP CONSISTING OF TRYPSIN AND CHYMOTRYPSIN, AND A QUANTITY OF AN ENZYME SUBSTRATE SUFFICIENT TO SUBSTANTIALLY STABILIZE THE ENZYME ACTIVITY AND PROTECT SAID ENZYME FROM INHIBITION BY SAID VASOCONSTRICTOR COMPOUND SO THAT SAID ENZYME IS EFFECTIVE FOR A PERIOD OF AT LEAST 5 DAYS, SAID ENZYME SUBSTRATE BEING SELECTED FROM THE GROUP CONSISTING OF GELATIN, HYDROLYZED GELATIN, AND COLLAGEN.
References Cited (Backward Citations)
US2144395A
Cited
US2547429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |