Patents by Inventor Grant E. Greske

Grant E. Greske 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).

  • Abrasive particles, abrasive articles, and methods of making and using the same
    Patent number: 10155892
    Abstract: Abrasive particles include: 0.50 to 5.00 weight percent of seed particles for alpha-alumina formation selected from the group consisting of alpha-Fe2O3 seed particles, alpha-Al2O3 seed particles, and combinations thereof; 0.50 to 5.00 weight percent of MgO; 0.02 to 0.40 weight percent of Li2O or a molar equivalent amount of at least one alkali metal oxide selected from the group consisting of: Na2O; K2O; combinations of Na2O and Li2O; combinations of K2O and Li2O; combinations of Na2O and K2O; and combinations of Li2O, Na2O, and K2O; and 91.08 to 99.48 weight percent of Al2O3. Methods of making the abrasive particles and abrasive articles incorporating them are also disclosed.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: December 18, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Larry D. Monroe, Grant E. Greske
  • Abrasive Particles, Abrasive Articles, and Methods of Making and Using the Same
    Publication number: 20170107412
    Abstract: Abrasive particles include: 0.50 to 5.00 weight percent of seed particles for alpha-alumina formation selected from the group consisting of alpha-Fe2O3 seed particles, alpha-Al2O3 seed particles, and combinations thereof; 0.50 to 5.00 weight percent of MgO; 0.02 to 0.40 weight percent of Li2O or a molar equivalent amount of at least one alkali metal oxide selected from the group consisting of: Na2O; K2O; combinations of Na2O and Li2O; combinations of K2O and Li2O; combinations of Na2O and K2O; and combinations of Li2O, Na2O, and K2O; and 91.08 to 99.48 weight percent of Al2O3. Methods of making the abrasive particles and abrasive articles incorporating them are also disclosed.
    Type: Application
    Filed: February 13, 2015
    Publication date: April 20, 2017
    Applicant: 3M Innovative Properties Company
    Inventors: Larry D. Monroe, Grant E. Greske