US4370381A
Expired / Lapsed
US
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Granulocyte-separating material and granulocyte separator
Assignee: Asahi Kasei Corp
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Filing: 1981-03-02
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Granted: 1983-01-25
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Expires: 2001-03-02
Abstract
Abstract Granulocytes are advantageously collected from blood cell suspensions, especially blood or other body fluids, by bringing the blood cell suspensions into contact with a granulocyte-separating material comprising a carrier, such as a fiber, having supported thereon a fatty acid derivative containing a fatty acid moiety having 10 to 22 carbon atoms, whereby granulocytes are adsorbed on the granulocyte-separating material; and then, recovering the adsorbed granulocytes therefrom.
Inventors
- 👤 Katsunori Horikoshi
- 👤 Tsutomu Abe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:36
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/36; A61M1/3679; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2965; Y10T428/2967; Y10T428/2969; Y10T428/2982; Y10T428/2991; Y10T428/2998; Y10T428/31504
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
34 words
A granulocyte-separating material comprising a carrier in the form of a film, granule, powder or fiber having coated thereon a fatty acid derivative containing a fatty acid moiety having 10 to 22 carbon atoms.
Claim 2
Dependent Claim
34 words
A granulocyte-separating material comprising a carrier in the form of a film, granule, powder or fiber having coated thereon a fatty acid derivative containing a fatty acid moiety having 10 to 22 carbon atoms.
Claim 3
Dependent Claim
18 words
A granulocyte-separating material as claimed in claim 1, wherein the carrier is in the form of a fiber.
Claim 4
Dependent Claim
33 words
A granulocyte-separating material as claimed in claim 1, wherein the phase transition temperature of the fatty acid derivative from a solid to a liquid or liquid crystal is not higher than 45° C.
Claim 5
Dependent Claim
16 words
A granulocyte-separating material as claimed in claim 1, wherein the fatty acid derivative is a phospholipid.
Claim 6
Dependent Claim
13 words
A granulocyte-separating material as claimed in claim 4, wherein the phospholipid is lecithin.
Claim 7
Dependent Claim
15 words
A granulocyte-separating material as claimed in claim 1, wherein the fatty acid moiety is unsaturated.
Claim 8
Dependent Claim
18 words
A granulocyte-separating material as claimed in claim 6, wherein the carrier is in the form of a fiber.
Claim 9
Dependent Claim
16 words
A granulocyte-separating material as claimed in claim 2, wherein the fatty acid derivative is a phospholipid.
Claim 10
Dependent Claim
13 words
A granulocyte-separating material as claimed in claim 8, wherein the phospholipid is lecithin.
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) | 1986-01-24 | 1986-07-26 | 1987-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-24 | 1990-07-26 | 1991-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-24 | 1994-07-26 | 1995-01-25 | $7700.00 | Window Closed / Lapsed |