Patents by Inventor Joseph C. Alfano

Joseph C. Alfano 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).

  • Method for using an all solid-state fluorometer in industrial water system applications
    Patent number: 6255118
    Abstract: A solid-state fluorometry instrument is provided. The instrument is based on either diode laser or light-emitting diode (LED) excitation sources that are capable of being used in a wide range of applications. The solid-state diode laser based fluorometer instrument monitors fluorescent tracers, particularly suitable for industrial water sample stream applications. Using the instrument, a solid-state diode laser or light-emitting diode (LED) is used as an excitation source to excite fluorescent tracer molecules. The fluorescence resulting from the diode laser excitation is imaged with a lens onto a silicon photodiode detector. An optical filter is placed between the sample cell and the photodiode detector to reject scattered laser light. The output from the photodiode is amplified to produce an output voltage proportional to the quantity of fluorescence striking the photodiode detector.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: July 3, 2001
    Assignee: Nalco Chemical Company
    Inventors: Joseph C. Alfano, Michael J. Fehr, Martin R. Godfrey, John E. Hoots, Karen R. Tubergen, James E. Whitten, Narasimha M. Rao
  • Tracing of process additives in industrial ceramics applications
    Patent number: 6060318
    Abstract: The present invention provides for an improved method for monitoring the concentration of molecules and chemical treatment agents in ceramic slurries and powders.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: May 9, 2000
    Assignee: Nalco Chemical Company
    Inventors: Kevin J. Moeggenborg, James E. Whitten, Joseph C. Alfano
  • Monitoring boiler internal treatment with fluorescent-tagged polymers
    Patent number: 5736405
    Abstract: A method for the determination of the concentration of additives in boiler water systems, by which polymeric additives are utilized to monitor and treat boiler water systems.
    Type: Grant
    Filed: March 21, 1996
    Date of Patent: April 7, 1998
    Assignee: Nalco Chemical Company
    Inventors: Joseph C. Alfano, Martin R. Godfrey, Radhakrishnan Selvarajan, Mary C. Uhing