US3963441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article with a lyophilized immunoreactive self-adhering coating
Assignee: Hoffmann La Roche Inc
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Filing: 1974-11-18
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Granted: 1976-06-15
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Expires: 1994-11-18
Abstract
Abstract An article for carrying out immunologic determinations. The article is provided with a lyophilized immunologic-reactive coating which is self-adhering to a carrier. The article is useful in diagnosing various diseases.
Inventors
- 👤 Rolf Dietrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:05
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/543; Y; Y10; Y10S; Y10S436/00; Y10S436/807; Y10S436/809
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
59 words
An article useful for immunological determinations which article comprises a carrier material having at least part of one surface thereof physically coated with an immunological reactive material which is provided in stable and self-adhering form in the absence of a bonding reagent by applying a suspension of said immunological reactive material to said carrier material, drying and then lyophilizing.
Claim 2
Dependent Claim
59 words
An article useful for immunological determinations which article comprises a carrier material having at least part of one surface thereof physically coated with an immunological reactive material which is provided in stable and self-adhering form in the absence of a bonding reagent by applying a suspension of said immunological reactive material to said carrier material, drying and then lyophilizing.
Claim 3
Dependent Claim
17 words
The article of claim 1 wherein said carrier material is in the form of an object carrier.
Claim 4
Dependent Claim
27 words
The article of claim 2 wherein said object carrier has a top surface having one or more depressions, said immunologically reactive material being coated within said depressions.
Claim 5
Dependent Claim
19 words
The article of claim 3 wherein said object carrier also has one or more depressions on its bottom surface.
Claim 6
Dependent Claim
12 words
The article of claim 1 wherein said immunologically reactive material comprises antigens.
Claim 7
Dependent Claim
12 words
The article of claim 1 wherein said immunologically reactive material comprises antibodies.
Claim 8
Dependent Claim
12 words
The article of claim 1 wherein said immunologically reactive material comprises proteins.
Claim 9
Dependent Claim
12 words
The article of claim 1 wherein said immunologically reactive material comprises peptides.
Claim 10
Dependent Claim
12 words
The article of claim 1 wherein said immunologically reactive material comprises polysaccharides.
Claim 11
Dependent Claim
12 words
The article of claim 1 wherein said immunologically reactive material comprises Toxoplasmae.
Claim 12
Dependent Claim
12 words
The article of claim 1 wherein said immunologically reactive material comprises amoebae.
Claim 13
Dependent Claim
12 words
The article of claim 1 wherein said immunologically reactive material comprises Trypanosomae.
Claim 14
Independent Claim
61 words
A method for preparing articles useful for immunological determinations which method comprises applying a suspension of an immunologically reactive material to at least one surface of said article, allowng said article to dry and then lyophilizng said article so as to provide said immunologically reactive material as a partial coating on said surface of said article in lyophilized and self-adhering form.
Claim 15
Independent Claim
61 words
A method for preparing articles useful for immunological determinations which method comprises applying a suspension of an immunologically reactive material to at least one surface of said article, allowng said article to dry and then lyophilizng said article so as to provide said immunologically reactive material as a partial coating on said surface of said article in lyophilized and self-adhering form.
Claim 16
Dependent Claim
14 words
The method of claim 13 wherein sodium chloride solution is used for said suspension.
Claim 17
Dependent Claim
17 words
The method of claim 13 wherein said article is dried at a temperature between 20°C. and 40°C.
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) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |