Patents Assigned to Industrial Test Systems, Inc.
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Patent number: 11346825Abstract: A simplified reagent system for the analysis of arsenic in an acidic aqueous environment is disclosed. In accordance with the inventive technology, a two reagent system is provided. The first reagent includes a combination of an acidifying agent and an oxidizing agent, and is in particulate form. The second reagent is zinc in particulate form, and is beneficially used in the analysis in the presence of an effective amount of an agent for increasing the rate of arsine gas production.Type: GrantFiled: September 30, 2019Date of Patent: May 31, 2022Assignee: INDUSTRIAL TEST SYSTEMS, INC.Inventors: Balaji Tatineni, Ivars Jaunakais
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Patent number: 9429553Abstract: The present invention is directed to a processor-based analysis system and method. The technology includes a water analysis computer program, which may be an app for a smart device. Beneficially, an interactive visual display device is in communication with a sensing device. Advantageously, test parameter algorithms may be updated, and use of an auxiliary product with an intended test may be validated. Benefits further include improved accuracy of test results, user customization, and storage, management and output of associated data.Type: GrantFiled: October 12, 2012Date of Patent: August 30, 2016Assignee: Industrial Test Systems, Inc.Inventors: Lea M. Jaunakais, Andrew J. Roberts, George L. Bailey, II, Michael C. McBride, John R. Wright
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Patent number: 9222891Abstract: The present invention is directed to a reflectometer-based apparatus and method for colorimetric analysis. Advantageously, the present invention includes use of a test strip provided with an aperture over which a translucent colorimetric, indicator-bearing matrix is affixed. In addition, the present invention beneficially includes a test strip holder that includes a test strip-holding channel provided with a white background.Type: GrantFiled: June 26, 2014Date of Patent: December 29, 2015Assignee: Industrial Test Systems, Inc.Inventor: John Howard Ray
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Patent number: 7491546Abstract: Water soluble analytical agents for chlorine analysis of water are delivered into a sample from a support that is beneficially moved in the sample to assist delivery and mixing. Beneficially, an immediate photometric analysis of free chlorine is provided, and variability of measurements is reduced. Advantageously, the analysis is a touch-free chlorine analysis.Type: GrantFiled: September 27, 2004Date of Patent: February 17, 2009Assignee: Industrial Test Systems, Inc.Inventor: Ivars Jaunakais
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Patent number: 7333194Abstract: A beneficial photometric analytical method is described according to which an effective amount of at least one analytical agent for photometric analysis, is delivered from a support into a liquid sample, and advantageously a mixing action may be provided, by moving a portion of the support in the sample. The sample may be added to a photometric cell disposed in a photometric instrument, or may be added to a photometric instrument cell chamber (or well). In accordance with an advantageous feature of the method, the photometric instrument is beneficially waterproof. A photometric cell that provides more than one optical path length may beneficially be used, and a particular optical path length selected by rotation of the photometric cell in the cell chamber. Also described is a beneficial photometric apparatus.Type: GrantFiled: June 22, 2005Date of Patent: February 19, 2008Assignee: Industrial Test Systems, Inc.Inventors: Ivars Jaunakais, Sanjay Mohan Anand
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Patent number: 6696300Abstract: An improved method for the analysis of arsenic in an aqueous sample, is disclosed. In accordance with the inventive method, arsenic is reduced to arsine gas in an acidic aqueous reaction environment and in the presence of an effective amount of an agent for increasing the rate of arsine gas production. Beneficially, metal cations are used as rate-increasing agents.Type: GrantFiled: November 9, 2001Date of Patent: February 24, 2004Assignee: Industrial Test Systems, Inc.Inventors: Ivars Jaunakais, Lea Marianne Jaunakais, Corlyss Brown Lewis
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Patent number: 6541269Abstract: A method and calorimetric test strip for determining analyte concentration are provided. The test strip includes an aperture exposing a face of an calorimetric indicator-bearing carrier. Sensitivity is enhanced by flowing contact of the liquid to be analyzed, through the carrier and with the indicator.Type: GrantFiled: March 19, 2002Date of Patent: April 1, 2003Assignee: Industrial Test Systems, Inc.Inventors: Vasili V. Ramana, Kami R. Yamuna, Ivars Jaunakais
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Patent number: 5620658Abstract: A novel immersible colorimetric test strip is provided. The test strip includes a flow through, colorimetric indicator-bearing carrier, and a substance separately carried on the test strip for chemically modifying analyte into a detectible ionic form for color development of the indicator. Also provided are a test kit and an analysis method for using the kit.Type: GrantFiled: September 11, 1995Date of Patent: April 15, 1997Assignee: Industrial Test Systems, Inc.Inventor: Ivars Jaunakais
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Patent number: 5491094Abstract: A colorimetric test strip useful for analysis of free chlorine is provided. In a preferred embodiment, 3,3',5,5'-tetramethylbenzidine is the colorimetric indicator. Beneficially, the carrier for the indicator has been treated to have a pH that eliminates chloramine interference. Advantageously, the indicator in free base form and a suitable water-soluble buffer may be deposited on the carrier using a combined solution of indicator and buffer.Type: GrantFiled: June 3, 1994Date of Patent: February 13, 1996Assignee: Industrial Test Systems, Inc.Inventors: Vasili V. Ramana, Kami R. Yamuna, Ivars Jaunakais
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Patent number: 5106581Abstract: Improved method and device for detection and semi-quantitative colorimetric determination of molybdate, ferric, and vanadate ions in aqueous solutions and coolant systems containing ethylene glycol and coolant additive. The disclosed device comprises of test strips of absorbent support carrier or water resistant film impregnated uniformly with a hydroxylamine salt and a polyhydroxy organic acid such as gallic acid or its derivatives. Molybdate ions result in an orange/brown colorataion, ferric and vanadate ions result in a grey-blue/black coloration with color intensity directly proportional to concentration of ions.Type: GrantFiled: May 30, 1991Date of Patent: April 21, 1992Assignee: Industrial Test Systems, Inc.Inventors: Ivars Jaunakais, James K. Jaunakais