Ivars D Jaunakais

US Patent:

6541269, Apr 1, 2003

Filed:

Mar 19, 2002

Appl. No.:

10/100125

Inventors:

Vasili V. Ramana - Rock Hill SC
Kami R. Yamuna - Rock Hill SC
Ivars Jaunakais - Rock Hill SC

Assignee:

Industrial Test Systems, Inc. - Rock Hill SC

International Classification:

G01N 2177

US Classification:

436165, 422 56, 422 58

Abstract:

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.

US Patent:

6696300, Feb 24, 2004

Filed:

Nov 9, 2001

Appl. No.:

10/045387

Inventors:

Ivars Jaunakais - Rock Hill SC
Lea Marianne Jaunakais - Rock Hill SC
Corlyss Brown Lewis - Rock Hill SC

Assignee:

Industrial Test Systems, Inc. - Rock Hill SC

International Classification:

G01N 3320

US Classification:

436 73, 436177, 436175

Abstract:

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.

US Patent:

7333194, Feb 19, 2008

Filed:

Jun 22, 2005

Appl. No.:

11/157944

Inventors:

Ivars Jaunakais - Rock Hill SC, US
Sanjay Mohan Anand - Charlotte NC, US

Assignee:

Industrial Test Systems, Inc. - Rock Hill SC

International Classification:

G01N 21/01

US Classification:

356246

Abstract:

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.

US Patent:

7491546, Feb 17, 2009

Filed:

Sep 27, 2004

Appl. No.:

10/949315

Inventors:

Ivars Jaunakais - Rock Hill SC, US

Assignee:

Industrial Test Systems, Inc. - Rock Hill SC

International Classification:

G01N 33/00
G01N 31/22

US Classification:

436125, 422 56, 422 58, 422 8209, 436164, 436169, 436810, 4352877, 356436

Abstract:

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.

US Patent:

20040086425, May 6, 2004

Filed:

Nov 5, 2002

Appl. No.:

10/287659

Inventors:

Ivars Jaunakais - Rock Hill SC, US

International Classification:

G01N001/22

US Classification:

422/086000, 422/083000, 436/164000, 436/167000, 436/181000

Abstract:

Improved calorimetric analysis technology based on the analysis of reaction gas, is disclosed. In accordance with the inventive apparatus, a gas permeable medium bearing a suitable calorimetric reagent, is positioned so that gas exiting the apparatus passes through the gas permeable medium.

US Patent:

20060246596, Nov 2, 2006

Filed:

Apr 29, 2005

Appl. No.:

11/117536

Inventors:

Ivars Jaunakais - Rock Hill SC, US

International Classification:

G01N 31/22

US Classification:

436109000

Abstract:

Semi-quantitative colorimetric analysis of a fibrous matrix disposed on a support, and quantitative analysis of liquid color, are described. Cyanide and a halogenating reagent are reacted to produce a cyanogen halide, and Konig reagents are reacted with the cyanogen halide to yield a colorimetrically analyzable complex. A beneficial photometric method is also described. In addition, a reagent delivery device that includes a beneficial fibrous matrix for rapid delivery of reagents and rapid liquid color analysis, is described.

US Patent:

54910943, Feb 13, 1996

Filed:

Jun 3, 1994

Appl. No.:

8/253959

Inventors:

Vasili V. Ramana - Rock Hill SC
Kami R. Yamuna - Rock Hill SC
Ivars Jaunakais - Rock Hill SC

Assignee:

Industrial Test Systems, Inc. - Rock Hill SC

International Classification:

G01N 3300

US Classification:

436125

Abstract:

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.

US Patent:

51065819, Apr 21, 1992

Filed:

May 30, 1991

Appl. No.:

7/707793

Inventors:

Ivars Jaunakais - Rock Hill SC
James K. Jaunakais - Phoenix AZ

Assignee:

Industrial Test Systems, Inc. - Rock Hill SC

International Classification:

G01N 3122
G01N 3320/21/77

US Classification:

422 56

Abstract:

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.