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US3647397A Expired / Lapsed US ⏱️ 0.0 years remaining

Reagent solution preparation

Assignee: Individual
•
Filing: 1969-11-19
•
Granted: 1972-03-07
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Expires: 1989-11-19
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Abstract

Abstract A method of preparing sterile chemical reagent solutions including providing a sterile expandable mixing container with a quantity of reagent concentrate material, positioning said mixing container on or within a support structure, introducing a predetermined quantity of mixing fluid into the mixing container, mixing the concentrate material and fluid to establish a uniform homogeneous reagent solution and subsequently filtering the solution to remove particulate material. Mixing may be effected by an inertly covered magnetic stirring element positioned within the container. A sterile container assembly for chemical reagent concentrates including an expandable inner container having a chemical reagent concentrate therein, closure means having a passageway therethrough secured to the mouth of said inner container, a tubular reagent discharge conduit having one portion extending into the closure passageway and one end disposed within the container. Filter means secured to said conduit and an outer container protectively surrounding said inner container. Sterile sealing means on at least one of said inner and outer containers to prevent communication between the surrounding air and the interior of the inner container.

Inventors

  • 👤 Charles M Coleman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 21:49
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/45; B01F33/452; B01L; B01L3/00; B01L3/50; B01L3/502

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 54 words
The method of claim 1 including said reagent concentrate material is a dry particulate material, said mixing fluid is distilled water, establishing movement of a magnetic stirrer disposed within said expandable container in order to effect said mixing, and said filtering of said reagent solution occurs prior to delivery from said expandable mixing container.
Claim 2
Dependent Claim 86 words
The method of claim 2 including inserting said mixing container into said rigid container through an opening in one wall of said rigid container, securing said mixing container to said rigid container adjacent said opening, providing within said mixing container a discharge tube which has a filter element at an end which extends toward a position closely adjacent the bottom of said container and has the other end extending outwardly through said closure, and delivering said reagent solution from said mixing container through said discharge tube.
Claim 3
Dependent Claim 222 words
A sterile container assembly for chemical reagent concentrates comprising an expandable inner container made of a flexible film material having a chemical reagent concentrate therein, closure means having a first passageway and a second passageway therethrough secured to the mouth of said inner container, said closure means being a generally cylindrical stopperlike element having said first and second passageways extending continuously therethrough in direction generally parallel to the central axis of said stopperlike element, a tubular reagent discharge conduit having one portion extending into said first passageway in said closure means, said conduit having the other end disposed within said inner container at a position closely adjacent the bottom thereof, said tubular reagent discharge conduit being flexible and being disposed in at least partially folded restricted length position within said expandable inner container, filter means secured to said conduit closer to said conduit end adjacent the bottom of said container than to said closure means to prevent discharge of particulate material from said conduit, an outer container protectively surrounding said inner container, and sterile sealing means to prevent communication between the contaminating elements in the surrounding air and the interior of said inner container, whereby removal of said inner container from said outer container permits introduction of a mixing fluid into said inner container to create a reservoir of sterile reagent solution.
Claim 4
Dependent Claim 56 words
The container assembly of claim 4 including said inner container is composed of a flexible thermoplastic material, a stirrer member composed of a magnetic material covered with a material which is inert with respect to said chemical reagent concentrate disposed within said inner container, and said filter is secured to said second end of said conduit.
Claim 5
Dependent Claim 103 words
The container assembly of claim 4 including said closure means having a passageway therethrough to permit introduction of a mixing fluid into said inner container, said inner container is made of a flexible polymer film material selected from the group consisting of rubber, olefin and acrylic, a major portion of said conduit secured to at least one wall of said inner container to prevent interference by saId conduit with movement of said stirrer member after the initiation of introduction of a mixing fluid into said inner container, and said filter element positioned adjacent a portion of said inner container remote from said closure.
Claim 6
Dependent Claim 42 words
The container assembly of claim 6 including said outer container is a substantially rigid jarlike container, said sealing means has a closure sealingly secured to said outer container, and said inner container has an expanded size substantially larger than said outer container.

References Cited (Backward Citations)

CA681637A Cited
US2859020A Cited
US3052525A Cited
US3084712A Cited
US3340888A Cited
US3165114A Cited
FR1375881A Cited
US3306829A Cited
US3420637A Cited
US3419360A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-03-07 1975-09-06 1976-03-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-03-07 1979-09-06 1980-03-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-03-07 1983-09-06 1984-03-07 $7700.00 Window Closed / Lapsed

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