Patents Assigned to CT Associates, Inc.
  • Patent number: 9513198
    Abstract: A method and apparatus for measuring dissolved residue concentrations and particulate residue particle concentrations and size distribution in liquids, particularly colloidal suspensions. The method involves separating dissolved and particulate residues in liquids for subsequent analysis of the residue species. The method includes the steps of forming an aerosol from the liquid sample to be analyzed, evaporating the droplets in the aerosol to dryness, detecting and sizing the particles, and determining the liquid volumetric inspection rate. An apparatus for separating dissolved and particulate residues in liquids for determination of the concentrations of the two residue species as well as the size distribution of the particulate species is also disclosed. The apparatus includes a droplet former, a dryer communicatively connected to the droplet former, and a detector communicatively connected to the evaporator for detecting and sizing particles.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: December 6, 2016
    Assignee: CT Associates, Inc.
    Inventors: Donald C. Grant, Mark R. Litchy
  • Patent number: 9086350
    Abstract: A method and apparatus for measuring particle concentration and size distribution of particles in liquids. The method involve separating dissolved and particulate residues in liquids for determination of the size and concentration of the particulate species. The method includes the steps of forming an aerosol from the liquid sample to be analyzed, evaporating the droplets in the aerosol to dryness, and detecting the particles. An apparatus for separating dissolved and particulate residues in liquids for determination of the size and concentration of the particulate species is also disclosed. The apparatus includes a droplet former, a dryer communicatively connected to the droplet former, and a detector communicatively connected to the evaporator for detecting particles.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: July 21, 2015
    Assignee: CT Associates, Inc.
    Inventors: Donald C. Grant, Mark R. Litchy, David Blackford, Derek R. Oberreit
  • Publication number: 20140013831
    Abstract: A method and apparatus for measuring dissolved residue concentrations and particulate residue particle concentrations and size distribution in liquids, particularly colloidal suspensions. The method involves separating dissolved and particulate residues in liquids for subsequent analysis of the residue species. The method includes the steps of forming an aerosol from the liquid sample to be analyzed, evaporating the droplets in the aerosol to dryness, detecting and sizing the particles, and determining the liquid volumetric inspection rate. An apparatus for separating dissolved and particulate residues in liquids for determination of the concentrations of the two residue species as well as the size distribution of the particulate species is also disclosed. The apparatus includes a droplet former, a dryer communicatively connected to the droplet former, and a detector communicatively connected to the evaporator for detecting and sizing particles.
    Type: Application
    Filed: September 19, 2013
    Publication date: January 16, 2014
    Applicant: CT Associates, Inc.
    Inventors: Donald C. Grant, Mark R. Litchy
  • Patent number: 8573034
    Abstract: A method and apparatus for measuring dissolved residue concentrations and particulate residue particle concentrations and size distribution in liquids, particularly colloidal suspensions. The method involves separating dissolved and particulate residues in liquids for subsequent analysis of the residue species. The method includes the steps of forming an aerosol from the liquid sample to be analyzed, evaporating the droplets in the aerosol to dryness, detecting and sizing the particles, and determining the liquid volumetric inspection rate. An apparatus for separating dissolved and particulate residues in liquids for determination of the concentrations of the two residue species as well as the size distribution of the particulate species is also disclosed. The apparatus includes a droplet former, a dryer communicatively connected to the droplet former, and a detector communicatively connected to the evaporator for detecting and sizing particles.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: November 5, 2013
    Assignee: CT Associates, Inc.
    Inventors: Donald C. Grant, Mark R. Litchy
  • Patent number: 8272253
    Abstract: A method and apparatus for measuring particle concentration and size distribution of particles in liquids. The method involve separating dissolved and particulate residues in liquids for determination of the size and concentration of the particulate species. The method includes the steps of forming an aerosol from the liquid sample to be analyzed, evaporating the droplets in the aerosol to dryness, and detecting the particles. An apparatus for separating dissolved and particulate residues in liquids for determination of the size and concentration of the particulate species is also disclosed. The apparatus includes a droplet former, a dryer communicatively connected to the droplet former, and a detector communicatively connected to the evaporator for detecting particles.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: September 25, 2012
    Assignee: CT Associates, Inc.
    Inventors: Donald C. Grant, Mark R. Litchy, David Blackford
  • Patent number: 6310017
    Abstract: A cleaning solution composition for use on electronic component and equipment employed in the cleaning of these components. The cleaning solution comprises ultrapure water containing carbonic acid plus an oxidizing agent selected from hydrogen peroxide, ozone, and combinations thereof. The invention includes a method of removing contaminants from electronic components, containers and associated equipment using the cleaning solution of novel composition. Further, the invention includes a method of preparing the novel cleaning solution composition by contacting carbon dioxide gas with ultrapure water and adding an oxidizing agent, or by contacting carbon dioxide gas with an ultrapure water solution of oxidizing agent.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: October 30, 2001
    Assignee: CT Associates, Inc.
    Inventors: Donald C. Grant, Mark R. Litchy