US3645692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation, preservation and transportation of blood and serum samples for use in clinical analyses
Assignee: Roche Diagnostics GmbH
•
Filing: 1969-06-11
•
Granted: 1972-02-29
•
Expires: 1989-06-11
Abstract
Abstract Process for the preparation, preservation and transportation of blood and serum samples for use in the determination of chemical and biochemical components therein, comprising applying onto an absorbent carrier having ion exchange properties samples of serum or blood, drying the carrier and sample and eluting the same just immediately prior to carrying out the indicated determination, the determination being carried out on the eluate.
Inventors
- 👤 Harald Stork
- 👤 Felix Helmut Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:53
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/96; C; C12; C12Q; C12Q1/00; C12Q1/54; G01N33/66; G01N33/92; Y; Y10; Y10T; Y10T436/00; Y10T436/25; Y10T436/2525
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
27 words
Process according to claim 1 wherein said absorbent carrier is a member selected from the group consisting of paper, compressed cellulose, textile fabrics and hydrophilic synthetic resins.
Claim 2
Dependent Claim
15 words
Process according to claim 1 wherein said absorbent carrier has weakly acidic cation exchange properties.
Claim 3
Dependent Claim
13 words
Process according to claim 1 wherein said absorbent carrier has anion exchange properties.
Claim 4
Dependent Claim
45 words
Process according to claim 1 wherein following said drying and just prior to carrying out the analytical determination, the dried absorbent carrier and sample is eluted with an eluting agent for said chemical or biochemical component and said determination is carried out with said eluent.
Claim 5
Dependent Claim
23 words
Process according to claim 5 wherein said chemical or biochemical component is glucose and said absorbent carrier has weakly acidic cation exchange properties.
Claim 6
Dependent Claim
21 words
Process according to claim 5 wherein said chemical or biochemical component is triglyceride and said absorbent carrier has anionic exchange properties.
Claim 7
Dependent Claim
23 words
Process according to claim 5 wherein said chemical or biochemical component is galactose and said absorbent carrier has weakly acidic cation exchange properties.
Claim 8
Dependent Claim
23 words
Process according to claim 5 wherein said chemical or biochemical component is cholesterol and said absorbent carrier has weakly basic ion exchange properties.
Claim 9
Dependent Claim
59 words
Process for storing blood and serum samples for prolonged periods for the subsequent determination of chemical and biochemical components contained therein, which comprises applying on an absorbent carrier having ion exchange properties a sample of serum or blood, drying the absorbent carrier and sample and storing the dried absorbent carrier serum or blood sample until needed for said determination.
References Cited (Backward Citations)
US3380888A
Cited
US3494744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |