US4565652A
Expired / Lapsed
US
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Process for removing lipoproteins using derivatized polyhydroxymethylene
Assignee: Siemens Healthcare Diagnostics GmbH Germany
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Filing: 1984-08-23
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Granted: 1986-01-21
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Expires: 2004-08-23
Abstract
Abstract A process for binding and removing lipoproteins from aqueous fluids is described, the lipoproteins being bound to polyhydroxymethylene, onto which is grafted an oxyethylated alcohol or an oxyethylated carboxylic acid, and, where appropriate, being eluted from the polyhydroxymethylene. The process is also suitable for blood plasma or serum.
Inventors
- 👤 Rudolf Schmidtberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:54
CPC Classifications
B; B01; B01D; B01D15/00; A; A61; A61K; A61K35/00; A61K35/12; A61K35/14; A61K35/16; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/92; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/829; Y10S530/83
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
50 words
A process for removing lipoproteins from an aqueous fluid, which comprises bringing said fluid into contact with a polyhydroxymethylene onto which has been grafted an oxyethylated alcohol or an oxyethylated carboxylic acid and separating the fluid from said polyhydroxymethylene to which at least some of said lipoproteins have become bound.
Claim 2
Dependent Claim
50 words
A process for removing lipoproteins from an aqueous fluid, which comprises bringing said fluid into contact with a polyhydroxymethylene onto which has been grafted an oxyethylated alcohol or an oxyethylated carboxylic acid and separating the fluid from said polyhydroxymethylene to which at least some of said lipoproteins have become bound.
Claim 3
Dependent Claim
34 words
The process as claimed in claim 1, wherein the alcohol is an alkanol having 4 to 30 carbon atoms, or the carboxylic acid is an aliphatic carboxylic acid having 4 to 20 carbon atoms.
Claim 4
Dependent Claim
15 words
The process as claimed in claim 1, wherein the fluid is blood plasma or serum.
Claim 5
Dependent Claim
57 words
A process for removing virtually all lipoprotein from an aqueous plasma or serum, which comprises bring said plasma or serum into contact with a polyhydroxymethylene onto which has been grafted an oxethylated alcohol or an oxethylated carboxylic acid and separating the plasma or serum from said polyhdroxymethylene to which virtually all of said lipoprotein has become bound.
Claim 6
Dependent Claim
57 words
A process for removing virtually all lipoprotein from an aqueous plasma or serum, which comprises bring said plasma or serum into contact with a polyhydroxymethylene onto which has been grafted an oxethylated alcohol or an oxethylated carboxylic acid and separating the plasma or serum from said polyhdroxymethylene to which virtually all of said lipoprotein has become bound.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-20 | 1989-07-22 | 1990-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-20 | 1993-07-22 | 1994-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-20 | 1997-07-22 | 1998-01-21 | $7700.00 | Window Closed / Lapsed |