US2800426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable khellin solutions and method of preparing same
Assignee: Upha Chemische-Pharmazeutische Praeparate GmbH
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Filing: 1954-06-03
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Granted: 1957-07-23
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Expires: 1974-06-03
Abstract
No abstract record available.
Inventors
- 👤 Gerhard F Kaellner
- 👤 Kurt A Mulli
- 👤 Kurt R Uhlenbrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:24
CPC Classifications
C; C07; C07D; C07D493/00; C07D493/02; C07D493/04; A; A61; A61K; A61K31/00; A61K31/56; A61K31/575; A61K47/00; A61K47/06; A61K47/28; A61K9/00; A61K9/0012; A61K9/0019; A61K9/10; A61K9/107; A61K9/1075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A METHOD OF PREPARING STABLE KHELLIN SOLUTIONS WHICH ARE SUITABLE FOR INJECTIONS COMPRISING INTRODUCING KHELLIN INTO AN AQUEOUS SOLUTION CONTAINING AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF ALKALI METAL SALTS AND AMMONIUM SALTS OF BILE ACIDS IN AN AMOUNT OF ABOUT 5 TO 25 PERCENT BY WEIGHT, AND HEATING THE SOLUTION AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO DISSOLVE ABOUT 0.2 TO 2.5 PERCENT BY WEIGHT OF SAID KHELLIN.
Claim 2
Independent Claim
73 words
A METHOD OF PREPARING STABLE KHELLIN SOLUTIONS WHICH ARE SUITABLE FOR INJECTIONS COMPRISING INTRODUCING KHELLIN INTO AN AQUEOUS SOLUTION CONTAINING AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF ALKALI METAL SALTS AND AMMONIUM SALTS OF BILE ACIDS IN AN AMOUNT OF ABOUT 5 TO 25 PERCENT BY WEIGHT, AND HEATING THE SOLUTION AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO DISSOLVE ABOUT 0.2 TO 2.5 PERCENT BY WEIGHT OF SAID KHELLIN.
References Cited (Backward Citations)
US2686145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |