Patents by Inventor Virginia C. Gordon
Virginia C. Gordon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6852289Abstract: Methods and apparatus for qualitatively or quantitatively determining one or more analytes in matrices such as foods, biological fluids, etc. An embodiment for determination of a single analyte comprises a sample receiving vessel, a first membrane and a reagent-containing well. The prepared sample passes through the first membrane whereby extraneous matter is removed, and a filtrate enters the reagent-containing well to provide a filtrate-reagent admixture from which the analyte may be determined. An embodiment for determination for multiple analytes includes one or more additional membranes in series with the first membrane, each such additional membrane being operative to capture one or more analytes. Each of the additional analytes may then be eluted from the membrane upon which it has been captured, into a separate reagent-containing well to provide eluant-reagent admixture from which each desired analyte may be determined. Formulations for preparation additives are also included.Type: GrantFiled: March 26, 2001Date of Patent: February 8, 2005Assignee: Saftest, Inc.Inventors: Virginia C. Gordon, Bennett W. Root, Jr., Barbara J. Peasley, John F. Elias, John T. Sorensen, Michael Mittelstein, Soheila Mirhashemi
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Publication number: 20040197235Abstract: Methods and apparatus for qualitatively or quantitatively determining one or more analytes in matrices such as foods, biological fluids, etc. An embodiment for determination of a single analyte comprises a sample receiving vessel, a first membrane and a reagent-containing well. The prepared sample passes through the first membrane whereby extraneous matter is removed, and a filtrate enters the reagent-containing well to provide a filtrate-reagent admixture from which the analyte may be determined. An embodiment for determination for multiple analytes includes one or more additional membranes in series with the first membrane, each such additional membrane being operative to capture one or more analytes. Each of the additional analytes may then be eluted from the membrane upon which it has been captured, into a separate reagent-containing well to provide eluant-reagent admixture from which each desired analyte may be determined. Formulations for preparation additives are also included.Type: ApplicationFiled: February 27, 2004Publication date: October 7, 2004Applicant: Safety Associates, Inc.Inventors: John T. Sorensen, Michael Mittelstein, Soheila Mirhashemi, Virginia C. Gordon, Bennett W. Root, Barbara J. Peasley, John F. Elias
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Publication number: 20030064423Abstract: Methods and apparatus for qualitatively or quantitatively determining one or more analytes in matrices such as foods, biological fluids, etc. An embodiment for determination of a single analyte comprises a sample receiving vessel, a first membrane and a reagent-containing well. The prepared sample passes through the first membrane whereby extraneous matter is removed, and a filtrate enters the reagent-containing well to provide a filtrate-reagent admixture from which the analyte may be determined. An embodiment for determination for multiple analytes includes one or more additional membranes in series with the first membrane, each such additional membrane being operative to capture one or more analytes. Each of the additional analytes may then be eluted from the membrane upon which it has been captured, into a separate reagent-containing well to provide eluant-reagent admixture from which each desired analyte may be determined. Formulations for preparation additives are also included.Type: ApplicationFiled: March 26, 2001Publication date: April 3, 2003Applicant: Safety Associates, Inc.Inventors: Virginia C. Gordon, Bennett W. Root, Barbara J. Peasley, John F. Elias, John T. Sorensen, Michael Mittelstein, Soheila Mirhashemi
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Patent number: 6489132Abstract: Methods and apparatus for qualitatively or quantitatively determining one or more analytes in matrices such as foods, biological fluids, etc. An embodiment for determination of a single analyte comprises a sample receiving vessel, a first membrane and a reagent-containing well. The prepared sample passes through the first membrane whereby extraneous matter is removed, and a filtrate enters the reagent-containing well to provide a filtrate-reagent admixture from which the analyte may be determined. An embodiment for determination for multiple analytes includes one or more additional membranes in series with the first membrane, each such additional membrane being operative to capture one or more analytes. Each of the additional analytes may then be eluted from the membrane upon which it has been captured, into a separate reagent-containing well to provide eluant-reagent admixture from which each desired analyte may be determined. Formulations for preparation additives are also included.Type: GrantFiled: September 2, 1999Date of Patent: December 3, 2002Assignee: Safety Associates, Inc.Inventors: Virginia C. Gordon, John T. Sorensen, Soheila Mirhashemi, Michael Mittelstein, John F. Elias
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Patent number: 5958714Abstract: Methods and apparatus for qualitatively or quantitatively determining one or more analytes in matrices such as foods, biological fluids, etc. An embodiment for determination of a single analyte comprises a sample receiving vessel, a first membrane and a reagent-containing well. The prepared sample passes through the first membrane whereby extraneous matter is removed, and a filtrate enters the reagent-containing well to provide a filtrate-reagent admixture from which the analyte may be determined. An embodiment for determination for multiple analytes includes one or more additional membranes in series with the first membrane, each such additional membrane being operative to capture one or more analytes. Each of the additional analytes may then be eluted from the membrane upon which it has been captured, into a separate reagent-containing well to provide eluant-reagent admixture from which each desired analyte may be determined. Formulations for preparation additives are also included.Type: GrantFiled: October 2, 1996Date of Patent: September 28, 1999Assignee: Safety Associates, Inc.Inventors: Virginia C. Gordon, John T. Sorensen, Soheila Mirhashemi, Michael Mittelstein, John F. Elias
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Patent number: 5612222Abstract: Methods and a device for determining the corrosivity of a substance to human skin or membrane are disclosed. In one approach, corrosivity is evaluated by measuring the time required for the test substance to transit a biobarrier that mimics human skin or membranes or the time required to cause a component of such biobarrier to break down and transit the membrane. The invention also envisions alternative approaches which involve series of layers of dyes and corrosive-resistant materials coated onto microspheres or test strips. Use of these methods provides a rapid determination of the corrosivity of test materials.Type: GrantFiled: January 11, 1995Date of Patent: March 18, 1997Assignee: In Vitro InternationalInventors: Virginia C. Gordon, Soheila Mirhashemi, Rosalind W. Wei
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Patent number: 5411888Abstract: Methods for determining the corrosivity of a substance to human skin or membrane are disclosed. In one approach, corrosivity is evaluated by measuring the time required for the test substance to transit a biobarrier that mimics human skin or membranes or the time required to cause a component of such biobarrier to break down and transit the membrane. The invention also envisions alternative approaches which involve series of layers of dyes and corrosive-resistant materials coated onto microspheres or test strips. Use of these methods provides a rapid determination of the corrosivity of test materials.Type: GrantFiled: July 27, 1993Date of Patent: May 2, 1995Assignee: Invitro InternationalInventors: Virginia C. Gordon, Soheila Mirhashemi, Rosalind W. Wei
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Patent number: 5053340Abstract: A membrane support, reagent and method determines, in vitro, skin irritation properties of individual compounds and/or mixtures is disclosed. The material to be tested is applied directly to the membrane support. The material may penetrate the membrane and diffuse into the reagent and cause a response, for example, the production of a precipitate. The test material may also alter or destroy the membrane and/or disrupt covalently linked dye molecules attached to the membrane and diffuse into the reagent to produce an additional or alternate response--for example, color. The sum of these two responses is proportional to the deleterious response elicited by the material on the human skin.Type: GrantFiled: February 24, 1989Date of Patent: October 1, 1991Assignee: National Testing CorporationInventors: Hyman C. Bergman, Virginia C. Gordon, Christopher P. Kelly
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Patent number: 4613574Abstract: A reagent and method for in vitro determination of the eye irritating properties of individual compounds and/or mixtures is disclosed. The material to be assessed is combined with the reagent which provides a response, for example, the production of a precipitate, which is proportional to the deleterious response elicited by the material in the human eye.Type: GrantFiled: May 4, 1984Date of Patent: September 23, 1986Assignee: Preventive Diagnostics CorporationInventors: Hyman C. Bergman, James F. Godfrey, Virginia C. Gordon
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Patent number: D424457Type: GrantFiled: April 22, 1999Date of Patent: May 9, 2000Assignee: Safety Associates, Inc.Inventors: Virginia C. Gordon, Bennett W. Root, Jr.