US4935371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sterilizable gas permeable container for use in culturing living cells
Assignee: American Sterilizer Co
•
Filing: 1987-12-30
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Granted: 1990-06-19
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Expires: 2007-12-30
Abstract
Abstract A container for use in culturing living cells includes an enclosable portion, or base, and a cover for enclosing the enclosable portion, a path defined between the junction of the enclosable portion and the cover and a gas permeable filter positioned within the path. Gases flow into and out of the container through the filter. Vapor phase hydrogen peroxide is degraded into water vapor and oxygen by a material associated with the filter to prevent hydrogen peroxide from entering the container.
Inventors
- 👤 James R. Rickloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:56
CPC Classifications
C; C12; C12M; C12M23/00; C12M23/02; C12M23/08; A; A61; A61L; A61L2/00; A61L2/16; A61L2/20; A61L2/24; C12M23/12; C12M23/38; C12M37/00; C12M37/02; A61L2103/00; A61L2103/05; Y; Y10; Y10S; Y10S436/00; Y10S436/807; Y10S436/81
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
92 words
In a container for use in culturing living cells having a path through which gases flow into and out of said container, an improvement comprising: a gas permeable filter positioned in said path so that gases must pass through said filter to flow into and out of said container, said filter being made of or coated with a material which degrades hydrogen peroxide into water and oxygen to prevent the passage of hydrogen peroxide into said container and which does not have a detrimental effect on the living cells in said container.
Claim 2
Dependent Claim
92 words
In a container for use in culturing living cells having a path through which gases flow into and out of said container, an improvement comprising: a gas permeable filter positioned in said path so that gases must pass through said filter to flow into and out of said container, said filter being made of or coated with a material which degrades hydrogen peroxide into water and oxygen to prevent the passage of hydrogen peroxide into said container and which does not have a detrimental effect on the living cells in said container.
Claim 3
Dependent Claim
52 words
The improvement recited in claim 1 where said container has an enclosable portion and means for enclosing said enclosable portion, said path is a tortuous path defined at the junction between said enclosable portion and said enclosing means, and said filter is a strip having an adhesive backing for covering said junction.
Claim 4
Dependent Claim
33 words
The improvement recited in claim 1 wherein said container has an opening and a lid for covering said opening which together define therebetween said path, and said filter is disposed in said lid.
Claim 5
Dependent Claim
92 words
A container for use in culturing living cells comprising: an enclosable portion for receiving living cells; means for enclosing said enclosable portion; a path through which gases flow into and out of said container; and a gas permeable filter positioned in said path so that gases must pass through said filter to flow into and out of said container, said filter being made of or coated with a material which degrades hydrogen peroxide into water and oxygen and which does not have a detrimental effect on the living cells in said container.
Claim 6
Dependent Claim
92 words
A container for use in culturing living cells comprising: an enclosable portion for receiving living cells; means for enclosing said enclosable portion; a path through which gases flow into and out of said container; and a gas permeable filter positioned in said path so that gases must pass through said filter to flow into and out of said container, said filter being made of or coated with a material which degrades hydrogen peroxide into water and oxygen and which does not have a detrimental effect on the living cells in said container.
Claim 7
Dependent Claim
25 words
The container recited in claim 4 wherein said path is a tortuous path defined by the juncture between said enclosable portion and said enclosing means.
Claim 8
Dependent Claim
29 words
The container recited in claim 4 wherein said material is selected from the group consisting of catalase, activated carbon, nickel based metal alloys, cobalt, sodium pyruvate and manganese dioxide.
Claim 9
Dependent Claim
20 words
The container recited in claim 4 wherein said material catalytically degrades vapor phase hydrogen peroxide into water vapor and oxygen.
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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) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |