Patent US4358539A successfully refreshed from Google Patents.
US4358539A
Expired / Lapsed
US
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Throw-away subculturing device
Assignee: Becton Dickinson and Co
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Filing: 1981-03-20
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Granted: 1982-11-09
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Expires: 2001-03-20
Abstract
Abstract A device is provided for blind subculturing in place of a standard petri dish, which device eliminates the need for a separate needle and syringe. The device includes a culture media in combination with an absorbent fiber disc adjacent the culture media for absorbing inoculum and maintaining it adjacent the media gel. In addition, a mounted needle is included in the device for penetrating the septum of a standard culture bottle, for withdrawing the inoculum. Means are provided for readily removing the culture media from the device momentarily for inspection, with the means including a cooperating closure assembly on the device utilizing a conventional petri plate as the top and/or bottom cap or closure.
Inventors
- 👤 Gilbert S. Bittings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:12
CPC Classifications
C; C12; C12M; C12M23/00; C12M23/34; C12M23/02; C12M23/06; C12M25/00; C12M25/02; C12M33/00; C12M33/04; Y; Y10; Y10S; Y10S435/00; Y10S435/81
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
127 words
A throw-away subculture device, characterized by (a) a container defining an enclosure with a top opening and a bottom opening; (b) a top cap for said top opening; (c) a bottom cap for said bottom opening; (d) a web spaced from said top cap dividing said enclosure into two chambers one of which defines a subculture area in said enclosure; (e) at least one well and culture media in said top cap for cooperation with said subculture area; (f) at least one absorbent fiber disc mounted adjacent said well for receiving inoculum introduced into said subculture area; and (g) at least one needle mounted in said web and extending therethrough for introducing inoculum to said subculture area, the point of said needle extending toward said bottom cap.
Claim 2
Dependent Claim
127 words
A throw-away subculture device, characterized by (a) a container defining an enclosure with a top opening and a bottom opening; (b) a top cap for said top opening; (c) a bottom cap for said bottom opening; (d) a web spaced from said top cap dividing said enclosure into two chambers one of which defines a subculture area in said enclosure; (e) at least one well and culture media in said top cap for cooperation with said subculture area; (f) at least one absorbent fiber disc mounted adjacent said well for receiving inoculum introduced into said subculture area; and (g) at least one needle mounted in said web and extending therethrough for introducing inoculum to said subculture area, the point of said needle extending toward said bottom cap.
Claim 3
Dependent Claim
50 words
The apparatus of claim 1, further characterized by (a) said container is tubular; (b) cooperating angular surfaces between said container and said top cap; (c) cooperating angular surfaces between said container and said bottom cap; and (d) whereby said top cap and said bottom cap are press-fit onto said container.
Claim 4
Dependent Claim
20 words
The apparatus of claim 1, further characterized by (a) said absorbent fiber disc is comprised of an inert paper fiber.
Claim 5
Dependent Claim
28 words
The apparatus of claim 3, further characterized by (a) said disc is of a size to maintain a pre-determined quantity of incoulum adjacent said culture media during culturing.
Claim 6
Dependent Claim
24 words
The apparatus of claim 1, further characterized by: (a) said container, said top cap and said bottom cap are comprised of a transparent plastic.
Claim 7
Dependent Claim
21 words
The apparatus of claim 1, further characterized by: (a) a peelable label for identifying said device and its associated culture bottle.
Claim 8
Dependent Claim
134 words
A throw-away subculture device characterized by: (a) a tubular container open at the top and the bottom, said container comprised of a semi-rigid material; (b) a top cap for said container; (c) a bottom cap for said container; (d) cooperating angular surfaces between said container and said top and bottom caps; (e) a well in said top cap defining a media container for said device; (f) a web integral with said tubular container walls and mounted spaced from said top opening dividing said container into two chambers one of which defines a subculture area in said container; (g) an absorbent fiber disc in said subculture area for receiving inoculum introduced into said subculture area; and (h) a needle supported in said web and extending therethrough, with the point thereof extending toward said bottom opening.
Claim 9
Dependent Claim
134 words
A throw-away subculture device characterized by: (a) a tubular container open at the top and the bottom, said container comprised of a semi-rigid material; (b) a top cap for said container; (c) a bottom cap for said container; (d) cooperating angular surfaces between said container and said top and bottom caps; (e) a well in said top cap defining a media container for said device; (f) a web integral with said tubular container walls and mounted spaced from said top opening dividing said container into two chambers one of which defines a subculture area in said container; (g) an absorbent fiber disc in said subculture area for receiving inoculum introduced into said subculture area; and (h) a needle supported in said web and extending therethrough, with the point thereof extending toward said bottom opening.
Claim 10
Dependent Claim
20 words
The apparatus of claim 7, further characterized by: (a) said absorbent fiber disc is comprised of an inert paper fiber.
Claim 11
Dependent Claim
28 words
The apparatus of claim 8, further characterized by: (a) said disc is of a size to maintain a pre-determined quantity of inoculum adjacent said culture media during culturing.
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) | 1985-11-08 | 1986-05-10 | 1986-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-08 | 1990-05-10 | 1990-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-08 | 1994-05-10 | 1994-11-09 | $7700.00 | Window Closed / Lapsed |