• Method of use of non-fluorescent particles to determine fluorescence threshold of a flow cytometer relative to the autofluorescence of samples
  
  • Inventors: Abraham Schwartz and Emma Fernández-Repollet
    Patent Number: 5,089,416
    Patent Date: Feb 18, 1992
    https://www.google.com/patents/US5089416
• Fluorescent alignment microbeads with broad excitation and emission spectra and its use
  
  • Inventors: Abraham Schwartz and Emma Fernández-Repollet
    Patent Number: 5,073,498
    Patent Date: December 17, 1991.
    https://www.google.com/patents/US5073498