Patents by Inventor Leonard Wojcik

Leonard Wojcik 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).

  • Patent number: 9444065
    Abstract: A polymer mixture emits a broad spectrum of visible light that appears white or near-white in the aggregate. The polymer mixture comprises two (or more) components in the active layer. A heavy atom, such as platinum and/or iridium, present in the backbone of the mixture acts via a spin-orbit coupling mechanism to cause the ratio of fluorescent to phosphorescent light emission bands to be of approximately equal strength. These two broad emissions overlap, resulting in an emission spectrum that appears to the eye to be white.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: September 13, 2016
    Assignee: The University of Utah Research Foundation
    Inventors: Zeev Valentine Vardeny, Leonard Wojcik, Tomer Drori
  • Publication number: 20150194473
    Abstract: The present invention relates to devices that can be manipulated or controlled with a magnetic field, such as a spin-valve device, an organic light-emitting device, a compass, or a magnetometer. The devices of the invention comprise an organic interlayer comprising a deuterated organic material.
    Type: Application
    Filed: December 11, 2014
    Publication date: July 9, 2015
    Inventors: Zeev Valy Vardeny, Leonard Wojcik, Tho Duc Nguyen, Fujian Wang
  • Publication number: 20130095327
    Abstract: The present invention relates to devices that can be manipulated or controlled with a magnetic field, such as a spin-valve device, an organic light-emitting device, a compass, or a magnetometer. The devices of the invention comprise an organic interlayer comprising a deuterated organic material.
    Type: Application
    Filed: September 17, 2010
    Publication date: April 18, 2013
    Applicant: University of Utah Research Foundation
    Inventors: Zeev Valy Vardeny, Leonard Wojcik, Tho Duc Nguyen, Fujian Wang
  • Publication number: 20090313891
    Abstract: A class of organic light-emitting diodes (OLEDs) emit light tailored to the absorption spectra of growing plants. Upon photoexcitation, the OLEDs generate light in both the blue-green and red regions of the visible spectrum. A heavy metal atom present in the ?-conjugated polymer chain (such as platinum and/or iridium) acts via the spin-orbit coupling mechanism to cause an enhancement of the ratio of fluorescent to phosphorescent emission to be of approximately equal strength. These two emission bands overlap the absorption spectra of common plants grown under hydroponic conditions.
    Type: Application
    Filed: May 14, 2007
    Publication date: December 24, 2009
    Applicant: University of Utah
    Inventors: Zeev Valentine Vardeny, Leonard Wojcik, Tomer Drori, Matthew C. DeLong
  • Publication number: 20090310332
    Abstract: A polymer mixture emits a broad spectrum of visible light that appears white or near-white in the aggregate. The polymer mixture comprises two (or more) components in the active layer. A heavy atom, such as platinum and/or iridium, present in the backbone of the mixture acts via a spin-orbit coupling mechanism to cause the ratio of fluorescent to phosphorescent light emission bands to be of approximately equal strength. These two broad emissions overlap. resulting in an emission spectrum that appears to the eye to be white.
    Type: Application
    Filed: May 14, 2007
    Publication date: December 17, 2009
    Applicant: University of Utah
    Inventors: Zeev Valentine Vardeny, Leonard Wojcik, Tomer Drori
  • Publication number: 20050145504
    Abstract: The present invention provides an electrochemical method for producing diaryl iodonium compounds wherein application of an electric current to an electrochemical cell containing a reaction mixture composed of a solvent, an iodoaryl compound and an electrolyte forms an oxidizing agent in situ. In this first step, the oxidizing agent is subsequently converted into a stable oxidized iodoaryl intermediate, typically an iodosyl compound. The electric potential is removed and in a second step a target aryl compound is introduced to the reaction mixture to react with the oxidized iodoaryl intermediate to form a diaryl iodonium compound.
    Type: Application
    Filed: January 7, 2004
    Publication date: July 7, 2005
    Inventors: Leonard Wojcik, David Cornell