Patents by Inventor Martin Welzhofer

Martin Welzhofer 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).

  • Method of making a solvent-free polymer-based tire sealant
    Patent number: 8821982
    Abstract: The invention relates to a method for the production of a tire sealant (C) with a polymeric base. A highly viscous first sealant component (A) (including a natural rubber component that is undiluted or diluted with at least one additional natural rubber component and mixture ingredients that are free of a solvent and an activator) is mixed with at least one second sealant component (B) (comprising a separately produced medium with low viscosity containing at least one activator), to combine to the tire sealant (C), wherein a cross linking occurs associated with the subsequent application of the tire sealant (C) to the inside of the tire. Appropriate method steps are disclosed.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: September 2, 2014
    Assignee: Continental Reifen Deutschland GmbH
    Inventors: Stefan Sostmann, Martin Welzhofer, Joe Guardalabene, Casper Van De Pol
  • Self-sealing pneumatic vehicle tire and method for producing a self-sealing pneumatic vehicle tire
    Patent number: 8110055
    Abstract: A self-sealing pneumatic tire has a sealing band (3) applied adheringly in the circumferential direction on the inner side of the tire and radially within the tread. A sealant (2) is applied to a carrier material (1). The carrier material (1) of the sealing band (3) is a foil on which the sealant (2) has been applied. The sealant, because of its intrinsic stickiness, adheres both to the carrier material (1) and to the inner side of the tire.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: February 7, 2012
    Assignee: Continental Aktiengesellschaft
    Inventors: Stefan Sostmann, Martin Welzhofer
  • Method of making a solvent-free polymer-based tire sealant
    Publication number: 20100119715
    Abstract: The invention relates to a method for the production of a tire sealant (C) with a polymeric base. A highly viscous first sealant component (A) (including a natural rubber component that is undiluted or diluted with at least one additional natural rubber component and mixture ingredients that are free of a solvent and an activator) is mixed with at least one second sealant component (B) (comprising a separately produced medium with low viscosity containing at least one activator), to combine to the tire sealant (C), wherein a cross linking occurs associated with the subsequent application of the tire sealant (C) to the inside of the tire. Appropriate method steps are disclosed.
    Type: Application
    Filed: November 23, 2009
    Publication date: May 13, 2010
    Inventors: Stefan Sostmann, Martin Welzhofer, Joe Guardalabene, Casper Van De Pol
  • Self-sealing pneumatic vehicle tire and method for producing a self-sealing pneumatic vehicle tire
    Publication number: 20090205765
    Abstract: A self-sealing pneumatic tire has a sealing band (3) applied adheringly in the circumferential direction on the inner side of the tire and radially within the tread. A sealant (2) is applied to a carrier material (1). The carrier material (1) of the sealing band (3) is a foil on which the sealant (2) has been applied. The sealant, because of its intrinsic stickiness, adheres both to the carrier material (1) and to the inner side of the tire.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 20, 2009
    Inventors: Stefan Sostmann, Martin Welzhofer