US3656833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined plastic-glass microscope slides
Assignee: Medical Plastics Inc
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Filing: 1970-06-29
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Granted: 1972-04-18
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Expires: 1990-06-29
Abstract
Abstract A microscope slide according to the present disclosure is provided for laboratory use. Its utility is widespread, a single example being in lymphocyte typing. The slide comprises a body constructed of a non-wettable material having aperture means extending between opposite planar surfaces. A glass plate is bonded to one of the planar surfaces so as to close one end of the aperture means and thereby to form cavity means for confining a specimen to a restricted area. The glass plate provides a wettable surface in the cavity means for the specimen so that the specimen may spread on the glass plate in the cavity means. The device thereby provides the manufacturing convenience of a plastic-molded product with the essential feature of a wettable glass slide.
Inventors
- 👤 Clarence Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:00
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/34
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
67 words
A microscope slide for supporting a specimen comprising a body constructed of a molded non-wettable plastic material, said body having aperture means disposed between opposite planar surfaces, and a glass plate attached to said body adjacent one of said planar surfaces to close one end of said aperture means to form cavity means, said glass plate providing a wettable surface at the bottom of said cavity means.
Claim 2
Dependent Claim
67 words
A microscope slide for supporting a specimen comprising a body constructed of a molded non-wettable plastic material, said body having aperture means disposed between opposite planar surfaces, and a glass plate attached to said body adjacent one of said planar surfaces to close one end of said aperture means to form cavity means, said glass plate providing a wettable surface at the bottom of said cavity means.
Claim 3
Dependent Claim
24 words
A microscope slide according to claim 1 further including non-toxic bonding means attaching said glass plate to said one planar surface of said body.
Claim 4
Dependent Claim
23 words
A microscope slide according to claim 1 further including recess means in said body in the planar surface opposite said one planar surface.
Claim 5
Dependent Claim
33 words
A microscope slide according to claim 1 wherein said aperture means comprises a plurality of apertures and said cavity means is a plurality of cavities, said cavities being arranged in rows and columns.
Claim 6
Dependent Claim
63 words
A microscope slide according to claim 1 further including rim means forming a recess in said body in the planar surface opposite said one surface and in fluid communication with each of said plurality of cavities, said recess being adapted to contain fluid to a depth sufficient to cover said cavities and the planar surface on the opposite side from the glass plate.
Claim 7
Dependent Claim
170 words
A microscope slide for supporting a specimen comprising a substantially rectangular body constructed of molded styrene which is not wettable by liquid, and which is not toxic to an intended specimen, a first rim bounding one substantially rectangular planar surface of said body and a second rim bounding the opposite substantially rectangular planar surface of said body; a plurality of apertures between said first and second planar surface, said apertures being arranged in rows and columns on the planar surfaces; a glass plate on said first surface; and an epoxy bonding said glass plate to said body on said first surface, said glass plate closing one end of each of said apertures to form a plurality of cavities open to said second surface, said glass plate being constructed of a material which is wettable by the specimen, said epoxy being of the class which is non-toxic to the specimen, said second rim being adapted to contain fluid to a depth sufficient to cover said cavities and said second planar surface.
Claim 8
Dependent Claim
170 words
A microscope slide for supporting a specimen comprising a substantially rectangular body constructed of molded styrene which is not wettable by liquid, and which is not toxic to an intended specimen, a first rim bounding one substantially rectangular planar surface of said body and a second rim bounding the opposite substantially rectangular planar surface of said body; a plurality of apertures between said first and second planar surface, said apertures being arranged in rows and columns on the planar surfaces; a glass plate on said first surface; and an epoxy bonding said glass plate to said body on said first surface, said glass plate closing one end of each of said apertures to form a plurality of cavities open to said second surface, said glass plate being constructed of a material which is wettable by the specimen, said epoxy being of the class which is non-toxic to the specimen, said second rim being adapted to contain fluid to a depth sufficient to cover said cavities and said second planar surface.
Claim 9
Dependent Claim
27 words
Apparatus according to claim 6 wherein the thickness of the glass plate is substantially equal to the height of said first rim from said first planar 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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |