Patents Assigned to Cetac Technologies Incorporated
  • Patent number: 5400665
    Abstract: An efficient sample introduction system and method of use, for accepting liquid sample solutions, nebulizing them to form nebulized sample solution droplets, desolvating and removing solvent therefrom, and introducing the resulting desolvated nebulized sample particles to sample analysis systems is disclosed. In the preferred embodiment a flow of heated gas is caused to flow over the outer surface of a coiled essentially tubular shaped enclosed filter to remove solvent vapor which diffuses through the coiled essentially tubular shaped enclosed filter while a mixture of desolvated nebulized sample particles and solvent vapor is caused to flow therethrough. A modified embodiment utilizes a low temperature condenser in place of the heated gas flow. Nebulization of sample solutions is accomplished by use of high efficiency ultrasonic or direct injection micro nebulizer systems. Desolvation is performed in a desolvation chamber in which heating elements provide a temperature sufficient to vaporize solvent present.
    Type: Grant
    Filed: March 3, 1993
    Date of Patent: March 28, 1995
    Assignee: Cetac Technologies Incorporated
    Inventors: Jianzhong Zhu, Daniel R. Wiederin, John E. Sutton
  • Patent number: 5353113
    Abstract: An afterglow electric discharge detector system for use in analysis of samples is disclosed. Fabrication is predominately from machined radiation transparent material such as crystalline magnesium or lithium fluoride.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: October 4, 1994
    Assignee: Cetac Technologies Incorporated
    Inventor: Arthur P. D'Silva