US3780935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Serum separating method
Assignee: Organon Teknika Corp
•
Filing: 1972-07-10
•
Granted: 1973-12-25
•
Expires: 1992-07-10
Abstract
Abstract The separation of a sample of blood into serum and clot portions is accomplished by means of a sealant consisting essentially of a silicone fluid and silica dispersed therein. The separation is accomplished by inserting a device containing a supply of the sealant into a container holding a sample of the blood, the device being characterized by a nozzle portion which extends into the sample. The container and device are centrifuged so that it separates into serum and clot portions and the sealant, having a specific gravity of at least 1.026, separates the two portions.
Inventors
- 👤 M Lukacs
- 👤 I Jacoby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:17
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/49; G01N33/491; Y; Y10; Y10T; Y10T436/00; Y10T436/10; Y10T436/107497
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
88 words
A method of separating a sample of whole blood into serum and clot portions comprising the steps of: placing a quantity of whole blood into a container adapted to be centrifuged; inserting into said container a supply of a thixotropic, water insoluble, substantially non-toxic sealant consisting essentially of a silicone fluid and an inert filler dispersed therein, said sealant having a specific gravity in the range of 1.026 to 1.092; and centrifuging the blood into serum and clot portions until the sealant forms a separator between said portions.
Claim 2
Independent Claim
88 words
A method of separating a sample of whole blood into serum and clot portions comprising the steps of: placing a quantity of whole blood into a container adapted to be centrifuged; inserting into said container a supply of a thixotropic, water insoluble, substantially non-toxic sealant consisting essentially of a silicone fluid and an inert filler dispersed therein, said sealant having a specific gravity in the range of 1.026 to 1.092; and centrifuging the blood into serum and clot portions until the sealant forms a separator between said portions.
Claim 3
Dependent Claim
13 words
A method as defined in claim 1 wherein the inert filler is silica.
Claim 4
Dependent Claim
21 words
A method as defined in claim 1 wherein the sealant has a specific gravity in the range of 1.030 to 1.050.
References Cited (Backward Citations)
US3508653A
Cited
US3647070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |