US4481246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microscope slide with raised marking surface
Assignee: Manufacturers Hanover Trust Co
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Filing: 1982-11-15
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Granted: 1984-11-06
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Expires: 2002-11-15
Abstract
Abstract A microscope slide having a raised marking surface formed of pigmented resinous material, such as an epoxy resin, which dries to a matte finish which is absorptive and retentive of marking ink.
Inventors
- 👤 John M. Melisz
- 👤 Frank H. Jellinek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:53
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/34; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24926
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A microscope slide so configured with a raised portion at one end thereof that a plurality of such slides are stackable without extended area contact between them for substantially scratch-free packaging, said slide comprising: a flat glass plate on which said raised portion is a marking surface formed of a coating of an epoxy resin on said glass plate, said epoxy resin including a granular medium to impart porosity to said coating and a pigment to provide visual contrast to said coating to enhance visibility of marking to be placed thereon, said raised marking surface being effective to provide a barrier to prevent the spread of liquid sample, placed upon said slide, onto said marking surface.
Claim 2
Dependent Claim
116 words
A microscope slide so configured with a raised portion at one end thereof that a plurality of such slides are stackable without extended area contact between them for substantially scratch-free packaging, said slide comprising: a flat glass plate on which said raised portion is a marking surface formed of a coating of an epoxy resin on said glass plate, said epoxy resin including a granular medium to impart porosity to said coating and a pigment to provide visual contrast to said coating to enhance visibility of marking to be placed thereon, said raised marking surface being effective to provide a barrier to prevent the spread of liquid sample, placed upon said slide, onto said marking surface.
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) | 1987-11-06 | 1988-05-07 | 1988-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-06 | 1992-05-07 | 1992-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-06 | 1996-05-07 | 1996-11-06 | $7700.00 | Window Closed / Lapsed |