US4271270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for culturing and examining fungi
Assignee: Individual
•
Filing: 1979-08-06
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Granted: 1981-06-02
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Expires: 1999-08-06
Abstract
Abstract An apparatus for culturing and examination of fungi is configured to maintain the sterility of a culture medium and a cover slip until ready for use in accordance with a method which cultures the fungi in an environment which remains undisturbed during microscopic examination of the cultured fungi.
Inventors
- 👤 Patricia A. Lukacsek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:18
CPC Classifications
C; C12; C12M; C12M23/00; C12M23/02; C12M23/04; C12M23/22; C12M23/26; C12M23/38; C12M25/00; C12M25/14; C12M37/00; C12Q; C12Q1/00; C12Q1/02; C12Q1/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
222 words
An apparatus for culturing and examining fungi comprising: (a) a base of optically clear material and configured with a planar top surface and a compartment formed therein so as to open upwardly onto the top planar surface thereof, the compartment of said base being formed with square corners and flat surfaces to allow the passage of light rays with minimal refraction; (b) a culture nutrient medium in jelled form within the compartment of said base and disposed to present a planar top surface which is flush with the planar top surface of said base; (c) membrane means removably affixed on the top planar surface of said base so as to span the compartment thereof in contiguous engagement with the top surface of said culture nutrient medium to preserve the sterile state and moisture content thereof until ready for use; (d) a cover slip supported on the top planar surface of said base adjacent the compartment thereof, said cover slip having a surface area which is larger than the open top of the compartment formed in said base and is movable into a position which spans the compartment and is in contiguous engagement with the top surface of said culture nutrient medium subsequent to removal of said membrane means; and (e) a base cover of optically clear material demountably positioned on said base.
Claim 2
Independent Claim
222 words
An apparatus for culturing and examining fungi comprising: (a) a base of optically clear material and configured with a planar top surface and a compartment formed therein so as to open upwardly onto the top planar surface thereof, the compartment of said base being formed with square corners and flat surfaces to allow the passage of light rays with minimal refraction; (b) a culture nutrient medium in jelled form within the compartment of said base and disposed to present a planar top surface which is flush with the planar top surface of said base; (c) membrane means removably affixed on the top planar surface of said base so as to span the compartment thereof in contiguous engagement with the top surface of said culture nutrient medium to preserve the sterile state and moisture content thereof until ready for use; (d) a cover slip supported on the top planar surface of said base adjacent the compartment thereof, said cover slip having a surface area which is larger than the open top of the compartment formed in said base and is movable into a position which spans the compartment and is in contiguous engagement with the top surface of said culture nutrient medium subsequent to removal of said membrane means; and (e) a base cover of optically clear material demountably positioned on said base.
Claim 3
Dependent Claim
27 words
An apparatus as claimed in claim 1 wherein said base cover includes a flat planar top surface to allow the passage of light rays with minimal refraction.
Claim 4
Dependent Claim
21 words
An apparatus as claimed in claim 1 wherein said cover slip is provided with a lift tab on one edge thereof.
Claim 5
Dependent Claim
27 words
An apparatus as claimed in claim 1 wherein said membrane means comprises a sheet of nonporous material adhesively affixed to the planar top surface of said base.
Claim 6
Dependent Claim
22 words
An apparatus as claimed in claim 4 wherein said sheet is transparent and has a lift tab affixed to one edge thereof.
Claim 7
Dependent Claim
26 words
An apparatus as claimed in claim 1 wherein said cover includes a flat planar top with an endless sidewall integrally depending therefrom for enclosing said base.
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) | 1984-06-01 | 1984-12-01 | 1985-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-01 | 1988-12-01 | 1989-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-01 | 1992-12-01 | 1993-06-02 | $7700.00 | Window Closed / Lapsed |