US4447140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microscope slides
Assignee: Spiral Systems Inc
•
Filing: 1982-09-29
•
Granted: 1984-05-08
•
Expires: 2002-09-29
Abstract
Abstract A multi chambered slide is disclosed having a base plate, a plurality of spaced apart boundaries attached to the base plate, each contiguous pair of boundaries defining an area within which a liquid sample may be contained, each boundary having a pair of spaced apart elements between which is defined a boundary zone for containing any sample that may leak from the area defined by a pair of boundaries, each element being of substantially uniform thickness and being coated with an adhesive and a cover plate attached to the spaced apart elements of the boundaries to define a plurality of volumetric chambers into which liquid samples may be introduced.
Inventors
- 👤 Jeptha E. Campbell
- 👤 James E. Gilchrist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:49
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/34
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
112 words
A multi chambered slide comprising: (a) a base plate; (b) at least three spaced apart boundaries attached to the base plate, each contiguous pair of boundaries defining an area within which a liquid sample may be contained, each boundary having a pair of spaced apart elements between which is defined a boundary zone for containing any sample that may leak from an area defined by a pair of boundaries, each element being of a substantially uniform thickness and being coated with an adhesive; and (c) a cover plate attached to the spaced apart elements of the boundaries to define a plurality of volumetric chambers into which a liquid sample may be introduced.
Claim 2
Dependent Claim
112 words
A multi chambered slide comprising: (a) a base plate; (b) at least three spaced apart boundaries attached to the base plate, each contiguous pair of boundaries defining an area within which a liquid sample may be contained, each boundary having a pair of spaced apart elements between which is defined a boundary zone for containing any sample that may leak from an area defined by a pair of boundaries, each element being of a substantially uniform thickness and being coated with an adhesive; and (c) a cover plate attached to the spaced apart elements of the boundaries to define a plurality of volumetric chambers into which a liquid sample may be introduced.
Claim 3
Dependent Claim
14 words
A slide in accordance with claim 1 wherein the elements are filaments of fiber.
Claim 4
Dependent Claim
20 words
A slide in accordance with claim 1 wherein the elements are made from tape coated with adhesive on each side.
Claim 5
Dependent Claim
25 words
A slide in accordance with claims 1, 2, or 3, wherein the cover plate has an area larger than the area of the base plate.
Claim 6
Dependent Claim
57 words
A slide in accordance with claim 4 wherein each volumetric chamber has a pair of opposed openings which are defined by the boundaries, the cover, and the base plate; the openings permitting the introduction of the liquid sample into the volumetric chamber; and the cover plate providing a surface adjacent to each opening to the individual chambers.
Claim 7
Dependent Claim
20 words
A slide in accordance with claim 5 wherein the elements are substantially parallel and are of substantially the same length.
Claim 8
Dependent Claim
31 words
A slide in accordance with claim 6 wherein the cover plate and the base plate are rectangular in shape and the elements are disposed across the width of the base plate.
Claim 9
Dependent Claim
26 words
A slide in accordance with claim 1 wherein the adhesive is pressure sensitive and is insoluble in the samples to be contained in the volumetric chambers.
References Cited (Backward Citations)
US3445152A
Cited
US4171866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-08 | 1987-11-07 | 1988-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-08 | 1991-11-07 | 1992-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-08 | 1995-11-07 | 1996-05-08 | $7700.00 | Window Closed / Lapsed |