US2985561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the producing of a substance which causes leucocytosis
Assignee: Nyegaard and Co AS
•
Filing: 1956-06-13
•
Granted: 1961-05-23
•
Expires: 1976-06-13
Abstract
No abstract record available.
Inventors
- 👤 Laland Per Jensen
- 👤 Laland Soren Gustav Moe
- 👤 Dedichen Jens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:38
CPC Classifications
A; A61; A61K; A61K35/00; A61K35/12; A61K35/37; A61K35/407
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
THE PROCESS FOR PRODUCING FROM AN AQUEOUS LIVER EXTRACT A WATER-SOLUBLE SUBSTANCE WITH DISTINCTLY ACID PROPERTIES AND CONTAINING PHOSPHORUS AND EFFECTIVE TO INCREASE THE LEVEL OF WHITE BLOOD CORPUSCLES IN HUMAN BEING AND ANIMALS, COMPRISING; ADJUSTING THE PH OF SAID EXTRACT BY THE ADDITION OF ALKALI UNTIL IT IS IN THE RANGE OF 8 TO 8.4; ADDING TO THE SOLUTION AN ACETATE THE CATION OF WHICH IS A METAL SELECTED FROM THE GROUP CONSISTING OF BARIUM, CALCIUM AND LEAD; ADDING ALCOHOL TO THE SOLUTION AND SEPARATING THE RESULTING PRECIPITATE; DISSOLVING THE PRECIPITATE IN WATER; CONTACTING THE AQUEOUS SOLUTION WITH AN ACID ION EXCHANGE MATERIAL FOR REMOVING THE METALLIC CATIONS AND CATION-LIKE IMPURITIES; CONTACTING THE ELUATE WITH A BASIC ION EXCHANGER; ELUTING THE BASIC ION EXCHANGER WITH DILUTED AMMONIA WATER; AND CONCENTRATING THE ELUATE TO OBTAIN A WATER-SOLUBLE SUBSTANCE HAVING A SIGNIFICANT ULTRA-VIOLET ABSORPTION AT 260 MILLIMICRONS.
Claim 2
Dependent Claim
146 words
THE PROCESS FOR PRODUCING FROM AN AQUEOUS LIVER EXTRACT A WATER-SOLUBLE SUBSTANCE WITH DISTINCTLY ACID PROPERTIES AND CONTAINING PHOSPHORUS AND EFFECTIVE TO INCREASE THE LEVEL OF WHITE BLOOD CORPUSCLES IN HUMAN BEING AND ANIMALS, COMPRISING; ADJUSTING THE PH OF SAID EXTRACT BY THE ADDITION OF ALKALI UNTIL IT IS IN THE RANGE OF 8 TO 8.4; ADDING TO THE SOLUTION AN ACETATE THE CATION OF WHICH IS A METAL SELECTED FROM THE GROUP CONSISTING OF BARIUM, CALCIUM AND LEAD; ADDING ALCOHOL TO THE SOLUTION AND SEPARATING THE RESULTING PRECIPITATE; DISSOLVING THE PRECIPITATE IN WATER; CONTACTING THE AQUEOUS SOLUTION WITH AN ACID ION EXCHANGE MATERIAL FOR REMOVING THE METALLIC CATIONS AND CATION-LIKE IMPURITIES; CONTACTING THE ELUATE WITH A BASIC ION EXCHANGER; ELUTING THE BASIC ION EXCHANGER WITH DILUTED AMMONIA WATER; AND CONCENTRATING THE ELUATE TO OBTAIN A WATER-SOLUBLE SUBSTANCE HAVING A SIGNIFICANT ULTRA-VIOLET ABSORPTION AT 260 MILLIMICRONS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |