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US4435508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tissue culture vessel
Assignee: Individual
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Filing: 1981-11-20
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Granted: 1984-03-06
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Expires: 2001-11-20
Abstract
Abstract The tissue culture vessel of this invention comprises two rigid plates with aligned apertures. The upper plate is separated from the lower plate by a rubber gasket and an interchangeable growth substrate. The two plates are held together with screws. Materials used are nontoxic autoclavable and reusable. Access to the vessel is provided through a petri dish cover placed in a circular channel in the top surface of the upper plate. Such access allows for physical manipulation of the materials contained within the vessel while maintaining aseptic conditions.
Inventors
- 👤 Michael G. Gabridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:32
CPC Classifications
C; C12; C12M; C12M29/00; C12M29/10; C12M23/00; C12M23/24; C12M23/42
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
209 words
A tissue culture vessel for the growth of cellular material comprising: a. rigid upper plate of autoclavable, nontoxic material having a first aperture therethrough, a circular channel concentric with and remote from the first aperture and being accessible from the top surface of the upper plate, and a groove concentric with and adjacent to the first aperture and accessible from the bottom surface of the upper plate; b. a rigid base plate of autoclavable material affixed to the upper plate and having a second aperture therethrough being substantially mutually aligned with the first aperture, the bottom surface of the base plate having an inset concentric with the second aperture and being accessible from the bottom surface of the base plate; c. an interchangeable nontoxic growth substrate situated between the bottom surface of the upper plate and the top surface of the bottom plate and extending at least across the second aperture, providing an optically nondistorting surface for the use of high magnification microscopy visualization of the cellular material contained therein; d. a nontoxic gasket located in the groove and in an abutting relationship with the interchangeable growth substrate and the upper plate; and e. removeable cover situated in the circular channel and extending over and enclosing the first aperture.
Claim 2
Dependent Claim
209 words
A tissue culture vessel for the growth of cellular material comprising: a. rigid upper plate of autoclavable, nontoxic material having a first aperture therethrough, a circular channel concentric with and remote from the first aperture and being accessible from the top surface of the upper plate, and a groove concentric with and adjacent to the first aperture and accessible from the bottom surface of the upper plate; b. a rigid base plate of autoclavable material affixed to the upper plate and having a second aperture therethrough being substantially mutually aligned with the first aperture, the bottom surface of the base plate having an inset concentric with the second aperture and being accessible from the bottom surface of the base plate; c. an interchangeable nontoxic growth substrate situated between the bottom surface of the upper plate and the top surface of the bottom plate and extending at least across the second aperture, providing an optically nondistorting surface for the use of high magnification microscopy visualization of the cellular material contained therein; d. a nontoxic gasket located in the groove and in an abutting relationship with the interchangeable growth substrate and the upper plate; and e. removeable cover situated in the circular channel and extending over and enclosing the first aperture.
Claim 3
Dependent Claim
15 words
The tissue culture vessel of claim 1 wherein the cover is a petri dish cover.
Claim 4
Dependent Claim
18 words
The tissue culture vessel of claim 1 wherein the interchangeable growth substrate comprises a No. 1 glass coverslip.
Claim 5
Dependent Claim
25 words
The tissue culture vessel of claim 1 wherein the interchangeable growth substrate comprises gas-permeable membranes in sheet form, transparent silicone rubber sheets, and Teflon films.
Claim 6
Dependent Claim
34 words
The tissue culture vessel of claim 1 wherein the cover is a perfusion cover made out of a rigid, inert autoclavable plastic containing perfusion ports that provide for insertion of inlet and outlet tubes.
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) | 1987-03-06 | 1987-09-05 | 1988-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-06 | 1991-09-05 | 1992-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-06 | 1995-09-05 | 1996-03-06 | $7700.00 | Window Closed / Lapsed |