Patents by Inventor Gang Q. Li

Gang Q. Li has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4904872
    Abstract: In a method for generating extremely short ion pulses having a high intensity and a pulsed ion source to generate extremely short ion pulses having a high intensity, the ions are generated by an electron, laser or particle beam and are stored in a potential well formed by at least three electrodes, at least one of the central electrodes having a more attractive potential for the ions in question than the other electrodes. A single electrical pulse is used for extracting the ions from the potential well. Correspondingly constructed pulsed ion sources are particularly suitable for use in time-of-flight mass spectrometry. The ion storage effect is produced by a number of electrodes which generate a potential well for the ions to be detected. The ion compression is determined by the field strength existing during the ion extraction in the ion source which should be approximately equal in the entire area of acceleration.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: February 27, 1990
    Inventors: Raimund Grix, Roland Kutscher, Gang Q. Li, Hermann Wollnik