Patents by Inventor Duane M. Sulak

Duane M. Sulak 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: 20140259759
    Abstract: An insole advantageous for arthritic or diabetic patients comprises three layers and provides an arch support and an integral heel receiving area. The insole has a generally foot-shaped bottom layer having a length extending from a heel area to a toe area, a top surface and a bottom surface. The bottom layer's bottom surface preferably comprises one to three indentations formed integrally therein and is preferably made of an EVA foam. Insert layers are secured to each of said indentations. A middle layer having a first and second side is secured to the bottom layer's top surface adjacent the middle layer's second side and is preferably made of a synthetic rubber layer. The middle layer takes the shape of the bottom layer. A top layer is coextensive with and secured to the middle layer's first side. The top layer composition is selected according to the intended use.
    Type: Application
    Filed: March 18, 2013
    Publication date: September 18, 2014
    Applicant: Spenco Medical Corporation
    Inventors: Duane M. Sulak, David B. Granger, Jacob Martinez
  • Publication number: 20140230274
    Abstract: A triple density replacement insole which has at least two coextensive layers of different densities which are adjacent one another and extending the length of the insole comprising a first top cloth layer and a second gel layer and a third density layer comprising a stability cradle adjacent the gel layer. In a preferred embodiment, the stability cradle, which extends from the arch area to the heel area and secures to the gel layer, defines a first metatarsal region gap which exposes the gel layer and a second heel region gap which exposes the gel layer. A heel cushion is positioned in the second heel region gap adjacent to the gel layer and is secured to the gel layer exposed in that region. A metatarsal arch support is integrally formed in the first metatarsal region gap area.
    Type: Application
    Filed: April 30, 2014
    Publication date: August 21, 2014
    Applicant: Spenco Medical Corporation
    Inventors: Melvyn P. Cheskin, David Bradley Granger, Jacob Martinez, Duane M. Sulak
  • Patent number: 8745894
    Abstract: A triple density replacement insole which has at least two coextensive layers of different densities which are adjacent one another and extending the length of the insole comprising a first top cloth layer and a second gel layer and a third density layer comprising a stability cradle adjacent the gel layer. In a preferred embodiment, the stability cradle, which extends from the arch area to the heel area and secures to the gel layer, defines a first metatarsal region gap which exposes the gel layer and a second heel region gap which exposes the gel layer. A heel cushion is positioned in the second heel region gap adjacent to the gel layer and is secured to the gel layer exposed in that region. A metatarsal arch support is integrally formed in the first metatarsal region gap area.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: June 10, 2014
    Assignee: Spenco Medical Corporation
    Inventors: Melvyn P. Cheskin, David Bradley Granger, Jacob Martinez, Duane M. Sulak
  • Patent number: 8424222
    Abstract: An insole especially advantageous for arthritic or diabetic patients comprises three layers and is shaped in a form which provides and arch support and an integral heel receiving area. It is made from a generally foot-shaped bottom layer having a length extending from a heel area to a toe area, a top surface and a bottom surface. The bottom surface of the bottom layer preferably further comprises one to three indentations formed integrally therein. Insert layers are secured to each of said indentations. Preferably, the bottom layer is made from an EVA foam. A middle layer having a first and second side is secured to the top surface of the bottom layer adjacent the middle layer's second side. The middle layer is preferably made of a synthetic rubber layer. The middle layer takes the shape of the bottom layer. A top layer is coextensive with and secured to the first side of the synthetic rubber layer. The top layer composition is selected according to the intended use.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: April 23, 2013
    Assignee: Spenco Medical Corporation
    Inventors: Duane M. Sulak, David B. Granger, Jacob Martinez
  • Patent number: 8296969
    Abstract: A triple density heel cup is disclosed which comprises a generally heel-shaped substrate having a length extending from a heel portion of an integral wall to a front border, which front border in use is adapted to underlie a portion of the arch area of a human foot. The heel-shaped substrate comprises a structural gel layer having a foot receiving surface and a shoe side surface. A generally flat portion of the foot receiving surface will lie adjacent the bottom of a wearer's foot in use and the integral wall which is adapted to lie adjacent the back of wearer's heel and portion of the side of a wearer's heel in use, said integral wall having an apex of maximum height, said wall tapering down in height from said apex toward said front border; The shoe side surface defines a channel formed in said structural gel adapted to receive a reinforcing component which is secured to said structural gel in said channel and is made of a denser material than said structural gel.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: October 30, 2012
    Assignee: Spenco Medical Corporation
    Inventors: David Bradley Granger, Jacob Martinez, Duane M. Sulak
  • Publication number: 20110219642
    Abstract: An insole especially advantageous for arthritic or diabetic patients comprises three layers and is shaped in a form which provides and arch support and an integral heel receiving area. It is made from a generally foot-shaped bottom layer having a length extending from a heel area to a toe area, a top surface and a bottom surface. The bottom surface of the bottom layer preferably further comprises one to three indentations formed integrally therein. Insert layers are secured to each of said indentations. Preferably, the bottom layer is made from an EVA foam. A middle layer having a first and second side is secured to the top surface of the bottom layer adjacent the middle layer's second side. The middle layer is preferably made of a synthetic rubber layer. The middle layer takes the shape of the bottom layer. A top layer is coextensive with and secured to the first side of the synthetic rubber layer. The top layer composition is selected according to the intended use.
    Type: Application
    Filed: November 21, 2008
    Publication date: September 15, 2011
    Applicant: SPENCO MEDICAL CORPORATION
    Inventors: Duane M. Sulak, David B. Granger, Jacob Martinez
  • Publication number: 20100212188
    Abstract: A triple density heel cup is disclosed which comprises a generally heel-shaped substrate having a length extending from a heel portion of an integral wall to a front border, which front border in use is adapted to underlie a portion of the arch area of a human foot. The heel-shaped substrate comprises a structural gel layer having a foot receiving surface and a shoe side surface. A generally flat portion of the foot receiving surface will lie adjacent the bottom of a wearer's foot in use and the integral wall which is adapted to lie adjacent the back of wearer's heel and portion of the side of a wearer's heel in use, said integral wall having an apex of maximum height, said wall tapering down in height from said apex toward said front border; The shoe side surface defines a channel formed in said structural gel adapted to receive a reinforcing component which is secured to said structural gel in said channel and is made of a denser material than said structural gel.
    Type: Application
    Filed: January 12, 2009
    Publication date: August 26, 2010
    Applicant: Spenco Medical Corporation
    Inventors: David Bradley Granger, Jacob Martinez, Duane M. Sulak
  • Publication number: 20100205831
    Abstract: A triple density replacement insole which has at least two coextensive layers of different densities which are adjacent one another and extending the length of the insole comprising a first top cloth layer and a second gel layer and a third density layer comprising a stability cradle adjacent said gel layer is disclosed. In a preferred embodiment, the stability cradle, which extends from the arch area to the heel area and secures to the gel layer, defines a first metatarsal region gap which exposes the gel layer and a second heel region gap which exposes the gel layer, In the preferred embodiment, a heel cushion is positioned in the second heel region gap adjacent to said gel layer and is secured to said gel layer exposed in that region and a metatarsal arch support is integrally formed in the first metatarsal region gap area from the first top cloth and second gel layer.
    Type: Application
    Filed: September 11, 2008
    Publication date: August 19, 2010
    Applicant: SPENCO MEDICAL CORPORATION
    Inventors: Melvyn P. Cheskin, David Bradley Granger, Jacob Martinez, Duane M. Sulak