U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Quotables

"The abolishment of pain in surgery is a chimera. It is absurd to go on seeking it...knife and pain are two words in surgery that must forever be associated in the consciousness of the patient."

Dr. Alfred Velpeau, French surgeon ; 1839

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 422/79 - Biological, chemical, or total oxygen demand (i.e., BOD, COD, TOD)


Subclass of Class 422 - Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing
Definition: Apparatus for the analysis of water to determine its oxygen
No. of patents: 80
Last issue date: 04/15/2008


1    
NumberTitleIssue Date
7357896Resistometer
A Biological Indicator Evaluator Resistometer (BIER vessel) provides enhancements in controlling the start and end points of exposure to a sterilant gas. The end point control employs a large volume relative to the test chamber volume upon which is drawn a deep vacu...
04/15/2008
7258836Freeze resistant buoy system
A freeze resistant buoy system includes a tail-tube buoy having a thermally insulated section disposed predominantly above a waterline, and a thermo-siphon disposed predominantly below the waterline. ...
08/21/2007
7247498Device to alternately supply a fluid to an analyzer
Apparatus and methods for supplying a portion of a fluid stream and, alternately, a fluid of known composition and concentration to an analyzer are provided. The fluid stream is directed through a series of connected chambers formed in an integral housing. A samplin...
07/24/2007
7247470Method and apparatus for measuring nitric oxide production and oxygen consumption in cultures of adherent cells
An apparatus and method for measuring nitric oxide production and oxygen consumption in cultures of adherent cells continuously and without destroying the cells. The method involves flowing growth media through a tube having adherent cells are adhered to the inner s...
07/24/2007
7205153Analytical reagent for acid copper sulfate solutions
Embodiments of the invention provide an analytical method and analytical reagent solutions for determining the concentration of electrolyte components, such as copper, acid and chloride constituents in an acid or basic metal plating bath using a chemical analyzer. C...
04/17/2007
7186378Liquid sampling probe and cleaning fluidics system
A sampling aliquotter for aspirating aliquot portions of sample fluid from a closed container and for dispensing aliquot portions into a vessel using horizontal and vertical drives to drive a probe into the closed container, to position the probe above the vessel, a...
03/06/2007
7144496Biological fluid analysis device
A biological fluid analysis device (100) including a biosensor (50) comprising an electrochemical-enzymatic sensor including a working electrode (51) and a reference electrode (52), is disclosed. ...
12/05/2006
6936081Chemical hydride hydrogen reactor and generation system
A system and reactor stack for generating hydrogen from a hydride solution in presence of a catalyst. The reactor stack includes a number of reactor plates and separator plates alternate with one another, to define reaction chambers alternating with coolant chambers...
08/30/2005
6911122Method and apparatus for triggering oxygen scavenging composition with pulsed light
A method for triggering an oxygen scavenging composition for use in packaging an oxygen sensitive article includes the steps of providing an oxygen scavenging composition comprising an oxidizable organic compound and, optionally, a transition metal catalyst, and exp...
06/28/2005
6908770Fluid based analysis of multiple analytes by a sensor array
A system for the rapid characterization of multi-analyte fluids, in one embodiment, includes a light source, a sensor array, and a detector. The sensor array is formed from a supporting member into which a plurality of cavities may be formed. A series of chemically ...
06/21/2005
6852541Rapid assay for testing overall oxidative stress
The invention relates to an assay for testing oxidative stress of a subject by measurement of oxidants in biological fluids such as urine, plasma, bioreactor medium and respiratory aspirants. There is provided a method of determining oxidative stress in a mammalian ...
02/08/2005
6787106Analysis device
An analysis device, preferably in the form of a floating buoy, is disclosed for the analysis of fluids, such as waste water. The device has a main body portion and a removable cartridge containing consumable ingredients for use in analysis. ...
09/07/2004
6653143Process and device of elemental analysis
Elemental analysis of a sample is carried out in an oxygen atmosphere in a combustion reactor and the volume of oxygen required for analysis is determined by means of the algorithm...
11/25/2003
6623699Analyzing system for high accuracy nitrogen determination
An analyzer compensates for gas flow perturbations by providing a makeup flow of carrier gas to maintain the pressure and/or flow rate of analyte and inert gas through a detector constant such that a accurate determination of a low concentration of an ana...
09/23/2003
6605253Intervention techniques for reducing carcass contamination
The presently disclosed disinfection process for use in the processing of foodstuffs is designed as an intervention step in poultry processing to allow for continuous on-line processing of poultry carcasses that may have accidentally become contaminated d...
08/12/2003
6602717Apparatus for eliminating halide ions from aqueous solutions and method to remove halide ions from liquid aqueous samples
Apparatus for eliminating halide ions such as chloride ions from aqueous solutions having a hollow cylindrical sample holding chamber (2), the front end of which has an orifice (3) and in the vicinity of which is disposed a filter plate (4) that extends o...
08/05/2003
6555379Device for monitoring a processing liquid
A device for monitoring a processing liquid comprising at least one sensor for generating at least one monitoring signal, and a device for processing the monitoring signal and for generating a control signal for directly or indirectly influencing the comp...
04/29/2003
6416994Methanation activity measuring instrument
The present invention provides a specific methanogenic activity measuring apparatus, in which a carbon dioxide gas absorbing container 6 is removably accommodated in a pressure vessel 4 with a cover 3 removably set thereon, the pressure vessel 4 is remova...
07/09/2002
6379914Method and apparatus for measuring use of a substrate in a microbially catalyzed reaction
A sample substrate in a microbially catalysed biochemical reaction is measured by incubating the substrate with an excess of a microorganism and an excess of a co-substrate until the substrate is oxidized to a predetermined end point, and measuring the qu...
04/30/2002
6306620Method for assessing the viability of plant tissue using a colorimetric reagent
A method of assessing the condition of a fruit, vegetable, plant, or flower is provided. The method includes maintaining the fruit etc. in a substantially gas tight enclosure to trap gases produced by the fruit etc. A sample of the trapped gases is remove...
10/23/2001
6197256Device for analyzing fluid samples
An analyzing system for analyzing fluid samples includes a measuring buoy immersible in a body of fluid to be tested. The buoy forms a sample chamber in which samples of the fluid are to be tested. The sample chamber communicates with a settling chamber t...
03/06/2001
6183695Reagentless oxidation reactor and methods for using same
An improved apparatus and method is disclosed utilizing hydrogen absorption in combination with photolysis and/or electrolysis for in situ generation, i.e., without the need for adding chemical oxidizing agents, or enhancement of oxidizing conditions used...
02/06/2001
6180413Low level TOC measurement method
A method for the determination of total organic carbon in an aqueous sample by trapping the organic matter on a sorbent which is carbon free and analyzing the sorbent by combustion and determination of total CO2 by IR....
01/30/2001
6146896Method and apparatus for measuring the nitrification effectiveness of activated sludge
A method and apparatus for determining nitrification effectiveness of activated sludge in an aqueous solution, includes supplying equivalent quantities of an activated sludge, an aqueous solution, and a gas containing oxygen to each of first and second re...
11/14/2000
6114172Process and device for determining the biological oxygen demand of sewage
In order to determine the biological oxygen demand of sewage, a sample of sewage is taken into a reaction vessel in which there is a biological bath which is kept moving turbulently by an agitator. An oxygen probe measure the oxygen consumption per unit t...
09/05/2000
6063617On-line respirometer using constant oxygen concentration in reaction vessel
An on-line respirometer for measuring oxygen uptake by wastewater samples, plants, or animals due to respiration. A closed reaction vessel is adapted to receive and expel wastewater samples or the like. The vessel contains oxygen-sensing probes that const...
05/16/2000
6063638Wet chemical oxidation technique and apparatus for water impurity
Apparatus and processes for water impurity analysis and for impurity analysis of various other liquids as well. More particularly, the present invention concerns apparatus and processes for chemical oxidant and catalyst enhanced total organic carbon analy...
05/16/2000
6011247System for open and closed vessel microwave chemistry
A microwave system is provided which is capable of performing both open and closed vessel microwave chemistry in an efficient and productive manner. For open vessel chemistries, such as digestions, the system offers a microwave oven with: liquid cooled re...
01/04/2000
5976888Method for measuring NOx in biochemical processes
A method for measuring NOx in biochemical processes which includes a) isolating a liquid sample; b) adjusting the pH or ionic strength of the sample; c) recording mV values present in the sample after predetermined time periods; d) determining ...
11/02/1999
5932174Device for chloride ion removal prior to chemical oxygen demand analysis
A method of pretreating aqueous chemical oxygen demand (COD) samples to remove the risk of potential chloride ion interference. The method comprises acidifying an aqueous COD test sample, and thereafter passing the acidified sample through a source of pen...
08/03/1999
5922530Stable coupling dye for photometric determination of analytes
A dye couple compound is provided for use in a test device containing a reagent system for detecting the presence or quantity of an analyte in a sample. The reagent system comprises one or more enzymes which, in the presence of the analyte, produce an oxi...
07/13/1999
5902751Method and apparatus for the measurement of dissolved carbon
Apparatus and methods for the measurement of total organic carbon, total inorganic carbon and total carbon of water are described. The ample is acidified and split into an inorganic carbon stream and a total carbon stream. The inorganic carbon in the inor...
05/11/1999
5820823Method and apparatus for the measurement of dissolved carbon
Apparatus and methods for the measurement of total organic carbon, total inorganic carbon and total carbon of water are described. The sample is acidified and split into an inorganic carbon stream and a total carbon stream. The inorganic carbon in the ino...
10/13/1998
5807699Apparatus and method for monitoring condition of a biomass
The invention relates to apparatus (1) for monitoring condition of a biomass, particularly that naturally occurring in activated sewage sludge, comprising a vessel (2) for holding a liquid in the form of the activated sewage sludge containing a biomass (3...
09/15/1998
5770153Integrated analytical device for determining the gas consumption of matter
An analytical device for determining the gas consumption of matter, specifically the oxygen demand of organic matter includes a container for holding the sample which is to be analyzed and a cop to seal the container gas-tight. Electrical and/or electroni...
06/23/1998
5750073Reagentless oxidation reactor in a carbon measuring system
An oxidation reactor having particular utility in a system for measuring carbon in an aqueous sample. A first chamber and second chamber are separated by a hydrogen-permeable electrode, each chamber having a separate electrolysis cell. The hydrogen-permea...
05/12/1998
5702951Continuous RBCOD measurement
The invention provides a method and apparatus for providing periodical measurements of the real-time readily biodegradable chemical oxygen demand (RBCOD) of a wastewater stream. The apparatus includes a bio-reactor having an inlet for accepting a feed fro...
12/30/1997
5698092In-situ oxidizing zone remediation system for contaminated groundwater
A system is provided for producing an oxidizing zone within a saturated zone of an aquifer for in-situ decontamination of groundwater carrying contaminants in a plume wholly located below a water table in said saturated zone of said aquifer. The system co...
12/16/1997
5683914Method for chloride ion removal prior to chemical oxygen demand analysis
A method of pretreating aqueous chemical oxygen demand (COD) samples to remove the risk of potential chloride ion interference. The method comprises acidifying an aqueous COD test sample, and thereafter passing the acidified sample through a source of pen...
11/04/1997
5677190Cell and circuit for monitoring photochemical reactions
An improved measurement cell and circuit for measuring the electrical characteristics of a liquid sample during exposure to radiation includes a glass cell formed of a main tube extending generally parallel to an elongated lamp emitting the radiation, and...
10/14/1997
1    
 
Sign InRegister
Username  
Password   
forgot password?