US3071512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New hypotensive pharmaceutical preparation containing alpha-tocopheryl-quinone
Assignee: Sogespar SA
•
Filing: 1959-01-26
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Granted: 1963-01-01
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Expires: 1979-01-26
Abstract
No abstract record available.
Inventors
- 👤 Feldmann Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:28
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/12; A61K31/122; A61K31/33; A61K31/335; A61K31/35; A61K31/352; A61K31/353; A61K31/355; A61K31/365; A61K31/375; A61K2300/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A METHOD FOR PREPARING A HYPOTENSIVE PHARMACEUTICAL PREPARATION CONSISTING IN OXIDIZING ONE PART A-TOCOPHEROL, IN SOLUTION IN 5 PARTS ALCOHOL AT 95% WITH 0.5 PART SILVER NITRATE, THE REACTION BEING CONTROLLED, THE REDUCING POWER DISAPPEARS, BY MEANS OF A SOLUTION OF IRON PERCHLORIDE IN PRESENCE OF POTASSIUM FERRICYANIDE, ADDING SUCCESSIVELY METHYLENE-CHLORIDE AND WATER THERETO AND SEPARATING THE LAYER FORMED BY THE METHYLENECHLORIDE SOLUTION OF THE A-TOCOPHERYL-QUINONE FROM THE WATER AND ALCOHOL LAYER, ADSORBING THE METHYLENE-CHLO RIDE SOLUTION IN A MIXTURE OF CAROB-FLOUR AND SILICIUM OXIDE, SUBJECTING THE MIXTURE TO HEATING FOR VAPORIZING THE METHYLENE-CHLORIDE ADSORBED THEREIN.
Claim 2
Independent Claim
96 words
A METHOD FOR PREPARING A HYPOTENSIVE PHARMACEUTICAL PREPARATION CONSISTING IN OXIDIZING ONE PART A-TOCOPHEROL, IN SOLUTION IN 5 PARTS ALCOHOL AT 95% WITH 0.5 PART SILVER NITRATE, THE REACTION BEING CONTROLLED, THE REDUCING POWER DISAPPEARS, BY MEANS OF A SOLUTION OF IRON PERCHLORIDE IN PRESENCE OF POTASSIUM FERRICYANIDE, ADDING SUCCESSIVELY METHYLENE-CHLORIDE AND WATER THERETO AND SEPARATING THE LAYER FORMED BY THE METHYLENECHLORIDE SOLUTION OF THE A-TOCOPHERYL-QUINONE FROM THE WATER AND ALCOHOL LAYER, ADSORBING THE METHYLENE-CHLO RIDE SOLUTION IN A MIXTURE OF CAROB-FLOUR AND SILICIUM OXIDE, SUBJECTING THE MIXTURE TO HEATING FOR VAPORIZING THE METHYLENE-CHLORIDE ADSORBED THEREIN.
References Cited (Backward Citations)
US2856414A
Cited
US2608561A
Cited
US2685553A
Cited
US2862851A
Cited
US2895881A
Cited
US2888382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |