Patents by Inventor Kostadin Petkov

Kostadin Petkov 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: 8304115
    Abstract: A practical solid-state battery composed primarily of ceramic or glass materials and containing no liquid, gel or polymeric electrolytes. The invention utilizes solid-state electrolyte materials with solid-state anode and cathode materials along with construction concepts utilized in the multi layered ceramic capacitor (MLCC) industry to result in a compact primary or secondary battery.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: November 6, 2012
    Assignee: Cermacell, LLC
    Inventors: Kostadin Petkov, Mark Wesselmann
  • Patent number: 7186629
    Abstract: A protective disk for protecting a semiconductor wafer during processing includes an adhesive layer configured to adhere to the semiconductor wafer and a support layer coupled to the adhesive layer configured to provide strength and stiffness to the semiconductor wafer during processing. In one aspect of the invention, the protective disk is soluble in a mildly alkaline or mildly acidic solution. In another aspect, the adhesive layer comprises a high molecular weight polymer. In another aspect, the support layer comprises a polymer and a filler. The present invention may enable a robust, cost-effective, high-volume, automated process for thinning semiconductor wafers below 150 ?m, and for subsequent process steps of stress relief and transfer to a dicing frame for die singulation. Additionally, the invention enables use of existing toolsets and processes to produce thinner substrates than conventionally achievable.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: March 6, 2007
    Assignee: Advanced Materials Sciences, Inc.
    Inventors: Mark Wesselmann, Kostadin Petkov, Robert Metter, Michael S. Wisnieski, John Boyd
  • Publication number: 20060008650
    Abstract: A protective disk for protecting a semiconductor wafer during processing includes an adhesive layer configured to adhere to the semiconductor wafer and a support layer coupled to the adhesive layer configured to provide strength and stiffness to the semiconductor wafer during processing. In one aspect of the invention, the protective disk is soluble in a mildly alkaline or mildly acidic solution. In another aspect, the adhesive layer comprises a high molecular weight polymer. In another aspect, the support layer comprises a polymer and a filler. The present invention may enable a robust, cost-effective, high-volume, automated process for thinning semiconductor wafers below 150 ?m, and for subsequent process steps of stress relief and transfer to a dicing frame for die singulation. Additionally, the invention enables use of existing toolsets and processes to produce thinner substrates than conventionally achievable.
    Type: Application
    Filed: November 19, 2003
    Publication date: January 12, 2006
    Inventors: Mark Wesselmann, Kostadin Petkov, Robert Metter, Michael Wisnieski, John Boyd