Patents by Inventor Nicholas J. TUMAVITCH

Nicholas J. TUMAVITCH 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).

  • Publication number: 20150113882
    Abstract: A particulate material includes an abrasive particle having a superabrasive material with an external surface, and a coating including a metal overlying the external surface of the abrasive particle. The coating can include domains having an average domain size of not greater than about 260 nm, and the coating can include between about 1 wt % and about 20 wt % of the total weight of the abrasive particle and coating.
    Type: Application
    Filed: December 28, 2012
    Publication date: April 30, 2015
    Inventors: Nicholas J. Tumavitch, William Mecca, Brian C. Shaffer, Andrew G. Haerle
  • Publication number: 20150004890
    Abstract: A method of evenly coating small abrasive particles, specifically a method of coating diamond particles?10 ?m with nickel, and an abrasive article containing the coated abrasive particles, for example, a fixed diamond wire. The method includes applying ultrasonic energy to the plating bath and adjusting the power of the ultrasonic energy that a non-agglomeration factor (NAF) of the batch of abrasive particle is at least about 0.9, the non-agglomeration factor defined as a ratio (D50sa/D50b), wherein D50b represents the median particle size of the coated abrasive particles and D50sa represents the median particle size of the abrasive particles prior to coating.
    Type: Application
    Filed: June 26, 2014
    Publication date: January 1, 2015
    Inventors: Zoran KRSTIC, William MECCA, Andrew G. HAERLE, Nicholas J. TUMAVITCH, Brian C. SHAFFER