Patents by Inventor Ralf Helmut Hetzer

Ralf Helmut Hetzer 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).

  • Carbosilane containing fire-extinguishing foam
    Patent number: 10307627
    Abstract: The invention relates to fire-extinguishing foams or concentrates, which include a carbohydrate containing silane surfactant.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: June 4, 2019
    Assignee: UNIVERSITÄT ZU KÖLN
    Inventors: Dirk Blunk, Ralf Helmut Hetzer, Richard Daniel Matthias Meisenheimer, Kai Oliver Wirz
  • SILICON-CONTAINING ORGANIC ACID DERIVATIVES AS ENVIRONMENTALLY FRIENDLY AFFF EXTINGUISHING AGENTS
    Publication number: 20170259099
    Abstract: The invention relates to a fire fighting foam concentrate comprising a first surfactant, the first surfactant having an acid group as well as an oligosilane unit and/or oligosiloxane unit. The invention further relates to a method for extinguishing fires, comprising the steps of: providing a fire fighting foam concentrate; adding the fire fighting foam concentrate to water to obtain a mixture and bringing the fire into contact with the mixture; wherein the fire fighting foam concentrate is a fire fighting foam concentrate according to the invention. A further object of the invention is the use of a surfactant as an additive to fire fighting foams and/or fire fighting foam concentrates, the surfactant comprising an acid group as well as an oligosilane unit and/or oligosiloxane unit.
    Type: Application
    Filed: September 2, 2015
    Publication date: September 14, 2017
    Inventors: Dirk BLUNK, Shute YE, Ralf Helmut HETZER, Hanna SEBODE, Richard Daniel MEISENHEIMER
  • Siloxane-containing fire extinguishing foam
    Patent number: 9687686
    Abstract: The invention relates to fire extinguishing foams or concentrates thereof, these comprising a carbohydrate-containing siloxane surfactant.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: June 27, 2017
    Assignee: Universität zu Köln
    Inventors: Dirk Blunk, Ralf Helmut Hetzer, Angela Sager-Wiedmann, Kai Wirz
  • SILOXANE-CONTAINING FIRE EXTINGUISHING FOAM
    Publication number: 20160332013
    Abstract: The invention relates to fire extinguishing foams or concentrates thereof, these comprising a carbohydrate-containing siloxane surfactant.
    Type: Application
    Filed: May 19, 2016
    Publication date: November 17, 2016
    Inventors: Dirk Blunk, Ralf Helmut Hetzer, Angela Sager-Wiedmann, Kai Wirz
  • Siloxane-containing fire extinguishing foam
    Patent number: 9446272
    Abstract: The invention relates to fire extinguishing foams or concentrates thereof, these comprising a carbohydrate-containing siloxane surfactant.
    Type: Grant
    Filed: September 3, 2012
    Date of Patent: September 20, 2016
    Assignee: Universität zu Köln
    Inventors: Dirk Blunk, Ralf Helmut Hetzer, Angela Sager-Wiedmann, Kai Wirz
  • CARBOSILANE CONTAINING FIRE-EXTINGUISHING FOAM
    Publication number: 20160001115
    Abstract: The invention relates to fire-extinguishing foams or concentrates, which include a carbohydrate containing silane surfactant.
    Type: Application
    Filed: March 5, 2014
    Publication date: January 7, 2016
    Applicant: UNIVERSITÄT ZU KÖLN
    Inventors: Dirk Blunk, Ralf Helmut Hetzer, Richard Daniel Matthias Meisenheimer, Kai Oliver Wirz
  • SILOXANE-CONTAINING FIRE EXTINGUISHING FOAM
    Publication number: 20140306141
    Abstract: The invention relates to fire extinguishing foams or concentrates thereof, these comprising a carbohydrate-containing siloxane surfactant.
    Type: Application
    Filed: September 3, 2012
    Publication date: October 16, 2014
    Applicant: UNIVERSITAT ZU KOLN
    Inventors: Dirk Blunk, Ralf Helmut Hetzer, Angela Sager-Wiedmann, Kai Wirz