Patent US4364632A successfully refreshed from Google Patents.
US4364632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical microscope slide
Assignee: Individual
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Filing: 1981-01-12
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Granted: 1982-12-21
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Expires: 2001-01-12
Abstract
Abstract A rectangular microscope slide with a specimen envelope for vertical use having a base of a first uniform thickness and a platform of a second and greater uniform thickness, said platform being in the lower portion of said slide and housing a specimen cavity which is open at the top. The platform surface in the area of the cavity mouth has an upwardly and outwardly protruding lip which helps direct the specimen into the cavity. The slide is transparent and disposable in nature having optical properties similar to those of glass slides.
Inventors
- 👤 Joel F. Pullen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:31
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/24; G02B21/26
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
122 words
A rectangular microscope slide mounted from a single piece of clear material and containing a specimen envelope consisting of a base portion of uniform thickness, a platform portion located on, extending outwardly from and completely surrounded by said base portion, said platform portion having an upper transverse edge extending laterally outwardly from said base portion at essentially right angles, and a cavity of uniform thickness having a shape defined by the shape of said platform portion said cavity having an open upper end extending through the transverse laterally extending upper edge of said platform, said cavity having a front wall of uniform thickness and sidewalls formed from said platform portion and a rear wall of uniform thickness defined by said base portion.
Claim 2
Dependent Claim
122 words
A rectangular microscope slide mounted from a single piece of clear material and containing a specimen envelope consisting of a base portion of uniform thickness, a platform portion located on, extending outwardly from and completely surrounded by said base portion, said platform portion having an upper transverse edge extending laterally outwardly from said base portion at essentially right angles, and a cavity of uniform thickness having a shape defined by the shape of said platform portion said cavity having an open upper end extending through the transverse laterally extending upper edge of said platform, said cavity having a front wall of uniform thickness and sidewalls formed from said platform portion and a rear wall of uniform thickness defined by said base portion.
Claim 3
Dependent Claim
20 words
A microscope slide according to claim 1 wherein said platform portion is located in a lower portion of said slide.
Claim 4
Dependent Claim
16 words
A microscope slide according to claim 2 wherein the cavity platform portion and are U shaped.
Claim 5
Dependent Claim
16 words
A microscope slide according to claim 2 wherein the cavity platform portion and are V shaped.
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) | 1985-12-20 | 1986-06-21 | 1986-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-20 | 1990-06-21 | 1990-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-20 | 1994-06-21 | 1994-12-21 | $7700.00 | Window Closed / Lapsed |