Patent US5095213A successfully refreshed from Google Patents.
US5095213A
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Method of using an opaque plastic microscope slide for epi-fluorescent microscopy
Assignee: Siemens Healthcare Diagnostics GmbH Germany
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Filing: 1988-11-03
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Granted: 1992-03-10
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Expires: 2008-11-03
Abstract
Abstract Disclosed is a novel microscope slide. The slide of this invention is a plastic microscope slide which is optically opaque and substantially non-fluorescent. The slide of this invention has particular utility in epi-fluorescent microscopy.
Inventors
- 👤 Perry Strongin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:37
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/508; G; G02; G02B; G02B21/00; G02B21/34; B01L2300/00; B01L2300/08; B01L2300/0809; B01L2300/0822
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
85 words
A method of conducting epi-fluorescent microscopy for testing for the presence or absence of a compound in a test sample contained on a slide by directing exciting radiation onto said sample under conditions suitable to stimulate fluorescence and monitoring the test sample for said fluorescence wherein the improvement comprises employing a plastic microscope slide comprising a body with first and second sides, said body being composed of a plastic containing a sufficient amount of carbon black to render said body optically opaque and substantially non-fluorescent.
Claim 2
Independent Claim
85 words
A method of conducting epi-fluorescent microscopy for testing for the presence or absence of a compound in a test sample contained on a slide by directing exciting radiation onto said sample under conditions suitable to stimulate fluorescence and monitoring the test sample for said fluorescence wherein the improvement comprises employing a plastic microscope slide comprising a body with first and second sides, said body being composed of a plastic containing a sufficient amount of carbon black to render said body optically opaque and substantially non-fluorescent.
Claim 3
Dependent Claim
13 words
A method according to claim 1 wherein the plastic microscope slide is solvent-resistant.
Claim 4
Dependent Claim
16 words
A method according to claim 1 wherein the plastic microscope slide contains one or more cavities.
Claim 5
Dependent Claim
26 words
A method according to claim 1 wherein the plastic is selected from the group consisting of polyolefins, polyamides, polyacrylamides, polyesters, polyacrylic esters, polycarbonates, polytetrafluoroethylene and polyvinylacetate.
Claim 6
Dependent Claim
12 words
A method according to claim 1 wherein the plasic is a polyolefin.
Claim 7
Dependent Claim
22 words
A method according to claim 5 wherein the polyolefin is derived from C 2 -C 5 olefins including copolymers and terpolymers thereof.
Claim 8
Dependent Claim
11 words
A method according to claim 6 wherein the polyolefin is polypropylene.
References Cited (Backward Citations)
US4587213A
Cited
US4207554A
Cited
US4094745A
Cited
US3939350A
Cited
US4120991A
Cited
US4216137A
Cited
US4427889A
Cited
US4391941A
Cited
US4734450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-10 | 1995-09-09 | 1996-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-10 | 1999-09-09 | 2000-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-10 | 2003-09-09 | 2004-03-10 | $7700.00 | Window Closed / Lapsed |