Patents by Inventor Sandra Lynn Cole

Sandra Lynn Cole 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).

  • Chemical spot test for lead in paint and other media
    Patent number: 6800485
    Abstract: A one-step chemical spot test for the qualitative determination of lead in lead-based paint and other media. This test is based upon the reaction of lead with sodium rhodizonate under strong acid conditions to develop an intense purple colored complex. The acid preferred is dilute hydrochloric acid. The test is performed in one step using a dropper, plastic cylinders, or like apparatus.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: October 5, 2004
    Inventor: Sandra Lynn Cole
  • Chemical spot test for lead in paint and other media
    Publication number: 20030203496
    Abstract: A one-step chemical spot test for the qualitative determination of lead in lead-based paint and other media. This test is based upon the reaction of lead with sodium rhodizonate under strong acid conditions to develop an intense purple colored complex. The acid preferred is dilute hydrochloric acid. The test is performed in one step using a dropper, plastic cylinders, or like apparatus.
    Type: Application
    Filed: May 14, 2003
    Publication date: October 30, 2003
    Inventor: Sandra Lynn Cole
  • Chemical spot test for lead in paint and other media
    Publication number: 20030049852
    Abstract: A one-step chemical spot test for the qualitative determination of lead in lead-based paint and other media. This test is based upon the reaction of lead with sodium rhodizonate under strong acid conditions to develop an intense purple colored complex.
    Type: Application
    Filed: August 12, 2002
    Publication date: March 13, 2003
    Inventor: Sandra Lynn Cole
  • Chemical spot test for lead in paint and other media
    Patent number: 6489170
    Abstract: A one-step chemical spot test for the qualitative determination of lead in lead-based paint and other media. This test is based upon the reaction of lead with sodium rhodizonate under strong acid conditions to develop an intense purple colored complex. The acid preferred is dilute hydrochloric acid. The test is performed in one step using a dropper, plastic cylinders, or like apparatus.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: December 3, 2002
    Inventor: Sandra Lynn Cole