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US4656261A Expired / Lapsed US ⏱️ 0.0 years remaining

Lipoprotein adsorbent for use in extracorporeal circulation treatment and process for preparing thereof

Assignee: Kanegafuchi Chemical Industry Co Ltd
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Filing: 1985-10-21
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Granted: 1987-04-07
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Expires: 2005-10-21
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Abstract

Abstract A lipoprotein adsorbent for use in extracorporeal circulation treatment which is made of a water-insoluble porous hard gel which has an exclusion limit value from 10 6 to 10 9 measured by using glubular proteins and comprises a polymer having hydroxy group in at least a part of the molecule, at least a part of hydroxy groups on the surface of said gel being converted to sulfates. By using the adsorbent of the present invention, LDL and VLDL can be selectively and effectively removed from the body fluids of the patient. Further, the adsorbent of the present invention can be prepared in a lower cost than the adsorbent based on the principle of the affinity chromatography, in which a relatively expensive ligand is employed.

Inventors

  • 👤 Shigeo Furuyoshi
  • 👤 Nobutaka Tani

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 13:34
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/36; A61M1/3687; B; B01; B01J; B01J20/00; B01J20/22; B01J20/24; B01J20/26; B01J20/261; B01J20/262; B01J20/265; B01J20/267; B01J20/28; B01J20/28002; B01J20/28004; B01J20/28014; B01J20/28016; B01J20/28023; B01J20/28033; B01J20/28047; B01J20/30; B01J20/3085; B01J20/3092; A61M2202/00; A61M2202/04; A61M2202/0413; A61M2202/0456; A61M2202/046; B01J2220/00; B01J2220/40; B01J2220/48; B01J2220/4812; B01J2220/4825; B01J2220/50; B01J2220/58; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/903; Y10S210/905

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 67 words
A process for preparing a lipoprotein adsorbent for use in extracorporeal circulation treatment which comprises forming a water-insoluble porous hard gel which has an exclusion limit value from 10 6 to 10 9 measured by using globular proteins and comprises a polymer having hydroxy group in at least a part of the molecule, followed by directly converting hydroxy groups on the surface of said gel to sulfates.
Claim 2
Dependent Claim 67 words
A process for preparing a lipoprotein adsorbent for use in extracorporeal circulation treatment which comprises forming a water-insoluble porous hard gel which has an exclusion limit value from 10 6 to 10 9 measured by using globular proteins and comprises a polymer having hydroxy group in at least a part of the molecule, followed by directly converting hydroxy groups on the surface of said gel to sulfates.

References Cited (Backward Citations)

US4246351A Cited
US4265959A Cited
US4266030A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-04-06 1990-10-06 1991-04-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-04-06 1994-10-06 1995-04-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-04-06 1998-10-06 1999-04-07 $7700.00 Window Closed / Lapsed

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