Blood separation filter assembly and method
March 26, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3448041 3593854 3663374 3791933 Inside-to-outside flow filter tube and method of using same High capacity blood transfusion micro filter Separation of lymphocytes from lymphocyte-containing suspension by filtration Multilayered integral chemical analysis element for the blood Blood filter for leukocytes Separation of leukocytes from leukocyte-containing suspension by filtration InventorsAssigneeApplicationNo. 675452 filed on 03/26/1991US Classes:210/767, Separating210/85, WITH ALARM, INDICATOR, REGISTER, RECORDER, SIGNAL OR INSPECTION MEANS210/435, Within flow line or flow line connected close casing210/445, Clamped in casing joint210/446, Axially aligned inlet and outlet210/496, Bound, fused or matted, e.g., porous shapes, sponges, etc.210/505, Including fibers210/506, Coated or impregnated, e.g., adhesively bound210/509, Inorganic422/56, Having reagent in absorbent or bibulous substrate422/57, Having coated reagent422/101, Including means for separating a constituent; e.g., filter, condenser, extractor, etc.436/169, With reagent in absorbent or bibulous substrate436/170, Plural superposed layers436/177, Liberation or purification of sample or separation of material from a sample (e.g., filtering, centrifuging, etc.)604/406Filter or series thereof for liquid entering or leaving containerExaminersPrimary: Dawson, Robert A.Assistant: Kim, Sun Uk Attorney, Agent or FirmInternational ClassB01D 037/00AbstractBlood separation filter assemblies and methods are provided to quickly and completely separate plasma or serum from whole blood without the need of centrifugation. The filter assemblies and methods have filter materials of a predetermined thickness which are maintained under positive pressure during use. The filter materials have at least one layer of glass fibers having an average fiber diameter ranging from 0.2 μm to 7.0 μm and which are compressed at least 25% in thickness.Field of SearchSeparatingWITH ALARM, INDICATOR, REGISTER, RECORDER, SIGNAL OR INSPECTION MEANS Within flow line or flow line connected close casing Vented Clamped in casing joint Axially aligned inlet and outlet Bound, fused or matted, e.g., porous shapes, sponges, etc. Including fibers Coated or impregnated, e.g., adhesively bound Fibrous Inorganic Having reagent in absorbent or bibulous substrate Having coated reagent Including means for separating a constituent; e.g., filter, condenser, extractor, etc. With reagent in absorbent or bibulous substrate Plural superposed layers Liberation or purification of sample or separation of material from a sample (e.g., filtering, centrifuging, etc.) Including use of a solid sorbent, semipermeable membrane, or liquid extraction Filter or series thereof for liquid entering or leaving container |
| ||||||||||||||
