US2785154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing a stable silver protein composition
Assignee: CROOKES BARNES LAB Inc
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Filing: 1954-09-13
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Granted: 1957-03-12
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Expires: 1974-09-13
Abstract
No abstract record available.
Inventors
- 👤 Arthur P Locke
- 👤 Messer Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:09
CPC Classifications
A; A61; A61K; A61K33/00; A61K33/24; A61K33/38; A61K47/00; A61K47/30; A61K47/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN THE METHOD OF PRODUCING SILVER PROTEIN FOR THERAPEUTIC USES, THE IMPROVEMENT WHICH COMPRISES CONDUCTING THE SILVER PROTIEN FORMING REACTION IN AN ALKALINE AQUEOUS SOLUTION OF A DERIVED PROTEIN, SLOWLY ELEVATING THE TEMPERATURE OF RESULTING MIXTURE WHILE STIRRING THE SAME, TESTING THE MIXTURE AS REQUIRED DURING IT RISE IN TEMPERATURE TO DETERMINE ITS IONIC SILVER CONCENTRATION, TERMINATING THE RISE IN TEMPERATURE OF THE MIXTURE WHEN ITS IONIC SILVER CONCENTRATION REACHES A PREDETERMINED LEVEL FOUND TO YIELD A SOLUTION WITH THE DESIRED LEVEL OF BACTERIOSTATIC EFFECTIVENESS AND FREEDOM FROM IRRITATION, COOLING THE MIXTURE TO ROOM TEMPERATURE AND INCORPORATING INTO THE MIXTURE A NON-TOXIC CHELATING AGENT SELECTED FROM THE GROUP CONSISTING OF ETHYLENE DIAMINE TETRAACETIC ACID AND ITS SODIUM AND MIXED SODIUM AND CALCIUM SALTS IN AN AMOUNT EFFECTIVE TO MAINTAIN THE PREDETERMINED LEVEL OF IONIC SILVER CONCENTRATION.
Claim 2
Dependent Claim
136 words
IN THE METHOD OF PRODUCING SILVER PROTEIN FOR THERAPEUTIC USES, THE IMPROVEMENT WHICH COMPRISES CONDUCTING THE SILVER PROTIEN FORMING REACTION IN AN ALKALINE AQUEOUS SOLUTION OF A DERIVED PROTEIN, SLOWLY ELEVATING THE TEMPERATURE OF RESULTING MIXTURE WHILE STIRRING THE SAME, TESTING THE MIXTURE AS REQUIRED DURING IT RISE IN TEMPERATURE TO DETERMINE ITS IONIC SILVER CONCENTRATION, TERMINATING THE RISE IN TEMPERATURE OF THE MIXTURE WHEN ITS IONIC SILVER CONCENTRATION REACHES A PREDETERMINED LEVEL FOUND TO YIELD A SOLUTION WITH THE DESIRED LEVEL OF BACTERIOSTATIC EFFECTIVENESS AND FREEDOM FROM IRRITATION, COOLING THE MIXTURE TO ROOM TEMPERATURE AND INCORPORATING INTO THE MIXTURE A NON-TOXIC CHELATING AGENT SELECTED FROM THE GROUP CONSISTING OF ETHYLENE DIAMINE TETRAACETIC ACID AND ITS SODIUM AND MIXED SODIUM AND CALCIUM SALTS IN AN AMOUNT EFFECTIVE TO MAINTAIN THE PREDETERMINED LEVEL OF IONIC SILVER CONCENTRATION.
References Cited (Backward Citations)
US1582940A
Cited
US2194677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |