US4721730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorbent for β2 -microglobulin and immunoglobulin L-chain
Assignee: Kanegafuchi Chemical Industry Co Ltd
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Filing: 1987-05-29
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Granted: 1988-01-26
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Expires: 2007-05-29
Abstract
Abstract An adsorbent for beta 2-microglobulin and immunoglobulin L-chain suitable for use in an extracorporeal circulation treatment, which comprises a porous water-insoluble carrier and a compound immobilized onto said carrier, said compound satisfying that the value of log P, in which P is a partition coefficient in an octanol-water system, is not less than 2.5. The adsorbent is inexpensive, and efficiently adsorb and remove beta 2-microglobulin and immunoglobulin L-chain contained in a body fluid.
Inventors
- 👤 Shigeo Furuyoshi
- 👤 Eiji Ogino
- 👤 Nobutaka Tani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:08
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/28; B01J20/28014; B01J20/28047; B01J20/28054; B01J20/28057; B01J20/28078; B01J20/30; B01J20/3092; B01J20/32; B01J20/3202; B01J20/3206; B01J20/3208; B01J20/321; B01J20/3212; B01J20/3214; B01J20/3217; B01J20/3219; B01J20/3231; B01J20/3242; B01J20/3244; B01J20/3246; B01J20/3248; B01J20/3255; B01J2220/00; B01J2220/50; B01J2220/58
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
An adsorbent for β 2 -microglobulin and immunoglobulin L-chain suitable for use in an extracorporeal circulation treatment, which comprises a porous water-insoluble carrier, and carrier having molucular weight of the exclusion limit measured with a globular protein from 1×10 4 to 6×10 5 , and a compound immobilized onto said carrier, said compound satisfying that the value of log P, in which P is a partition coefficient in an octanol-water system, is not less than 2.5.
Claim 2
Dependent Claim
76 words
An adsorbent for β 2 -microglobulin and immunoglobulin L-chain suitable for use in an extracorporeal circulation treatment, which comprises a porous water-insoluble carrier, and carrier having molucular weight of the exclusion limit measured with a globular protein from 1×10 4 to 6×10 5 , and a compound immobilized onto said carrier, said compound satisfying that the value of log P, in which P is a partition coefficient in an octanol-water system, is not less than 2.5.
Claim 3
Dependent Claim
14 words
The adsorbent of claim 1, wherein said porous water-insoluble carrier is a hydrophilic carrier.
Claim 4
Dependent Claim
14 words
The adsorbent of claim 1, wherein said porous water-insoluble carrier is a hard carrier.
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) | 1991-01-25 | 1991-07-27 | 1992-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-25 | 1995-07-27 | 1996-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-25 | 1999-07-27 | 2000-01-26 | $7700.00 | Window Closed / Lapsed |