Patent US2043688A successfully refreshed from Google Patents.
Patent US4974952A successfully refreshed from Google Patents.
US4974952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Live cell chamber for microscopes
Assignee: Individual
•
Filing: 1988-03-31
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Granted: 1990-12-04
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Expires: 2008-03-31
Abstract
Abstract A live cell chamber apparatus (10) comprising a chamber frame unit (11) an upper seal unit (12) a cover slip unit (13) a lower seal unit (14) and a slide unit (15) wherein a fluid infusion chamber (101) is formed between the cover slip unit (13) the lower seal unit (14) and the slide unit (15) wherein the infusion chamber is in fluid communication with fluid ports (19) formed in the chamber frame unit (11).
Inventors
- 👤 Daniel C. Focht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:18
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/34
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
146 words
A live cell chamber apparatus for studying a live fluid culture medium with a microscope wherein the apparatus comprises: a chamber frame unit provided with fluid apertures; an upper seal unit operatively engaging said chamber frame unit; a cover slip unit operatively associated with said chamber frame unit; an infusion slide unit operatively associated with the cover slip unit; a lower gasket unit operatively disposed intermediate said cover slip unit and said infusion slide unit; and, an infusion chamber formed between the cover slip unit; the lower gasket unit; and the infusion slide unit wherein the infusion chamber is in fluid communication with the fluid apertures in said chamber frame unit; wherein, there are a plurality of infusion grooves formed in the infusion slide unit, and a plurality of micro-aqueducts formed through the infusion slide unit and through the lower gasket unit and/or upper seal unit.
Claim 2
Dependent Claim
146 words
A live cell chamber apparatus for studying a live fluid culture medium with a microscope wherein the apparatus comprises: a chamber frame unit provided with fluid apertures; an upper seal unit operatively engaging said chamber frame unit; a cover slip unit operatively associated with said chamber frame unit; an infusion slide unit operatively associated with the cover slip unit; a lower gasket unit operatively disposed intermediate said cover slip unit and said infusion slide unit; and, an infusion chamber formed between the cover slip unit; the lower gasket unit; and the infusion slide unit wherein the infusion chamber is in fluid communication with the fluid apertures in said chamber frame unit; wherein, there are a plurality of infusion grooves formed in the infusion slide unit, and a plurality of micro-aqueducts formed through the infusion slide unit and through the lower gasket unit and/or upper seal unit.
Claim 3
Dependent Claim
12 words
The apparatus as in claim 1 wherein the infusion grooves comprise micro-channels.
Claim 4
Dependent Claim
27 words
The apparatus as in claim 2 wherein the micro-channels have a generally T-shaped configuration to promote generally laminar flow of a fluid medium across the slide member.
Claim 5
Dependent Claim
15 words
The apparatus as in claim 3 wherein the upper seal unit comprises a gasket member.
Claim 6
Dependent Claim
32 words
The apparatus as in claim 4 wherein the infusion grooves are formed on the top surface of said slide member, and wherein the said micro-aqueducts are formed in the lower gasket unit.
Claim 7
Dependent Claim
31 words
The apparatus as in claim 1 wherein the infusion grooves are formed on the bottom surface of said slide member, and wherein the micro-aqueducts are formed in the upper seal unit.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-03 | 1994-06-04 | 1994-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-03 | 1998-06-04 | 1998-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-03 | 2002-06-04 | 2002-12-04 | $7700.00 | Window Closed / Lapsed |