Patent US4476023A successfully refreshed from Google Patents.
US4476023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Granulocyte-separating material and granulocyte separator
Assignee: Asahi Kasei Corp
•
Filing: 1982-09-27
•
Granted: 1984-10-09
•
Expires: 2002-09-27
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
2026-10-27 11:08
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: 2
Claim 1
Independent Claim
79 words
A granulocyte collector comprising a granulocyte-separating material packed in a vessel having a blood cell suspension introduction inlet and a blood cell suspension discharge outlet; said granulocyte-separating material comprising a carrier comprised of a fiber having a diameter of from 10 to 50 microns and packed in the vessel at a packing density of from 0.05 to 0.20 g/cm 3 and having supported thereon a fatty acid derivative containing a fatty acid moiety having 10 to 22 carbon atoms.
Claim 2
Dependent Claim
79 words
A granulocyte collector comprising a granulocyte-separating material packed in a vessel having a blood cell suspension introduction inlet and a blood cell suspension discharge outlet; said granulocyte-separating material comprising a carrier comprised of a fiber having a diameter of from 10 to 50 microns and packed in the vessel at a packing density of from 0.05 to 0.20 g/cm 3 and having supported thereon a fatty acid derivative containing a fatty acid moiety having 10 to 22 carbon atoms.
References Cited (Backward Citations)
US3462361A
Cited
US3448041A
Cited
US3630683A
Cited
US3647624A
Cited
US4050451A
Cited
US4202775A
Cited
US4246107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-09 | 1988-04-09 | 1988-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-09 | 1992-04-09 | 1992-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-09 | 1996-04-09 | 1996-10-09 | $7700.00 | Window Closed / Lapsed |