Patents by Inventor Gert Liebold

Gert Liebold 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).

  • Deicing or antiicing fluids for aircraft
    Patent number: 5334323
    Abstract: Deicing/antiicing fluids for aircraft which contain essentially glycols, crosslinked polyacrylic acid, a nonionic surfactant based on alkoxylated C.sub.10 -C.sub.20 alcohols, corrosion inhibitors, a mixture of NaOH and KOH, an antioxidant and water, reduce the loss of lift by having improved runoff characteristics from the wings while giving a refreeze holdover time of not less than 30 minutes.
    Type: Grant
    Filed: April 18, 1991
    Date of Patent: August 2, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans Schrimpf, Hans Krebs, Gert Liebold, Guenter Frey
  • Nitrite- and phosphate-free antifreeze based on glycol
    Patent number: 5064552
    Abstract: A glycol-based antifreeze mixture which is free of nitrites and phosphates contains an alkali metal salt of a C.sub.4 -C.sub.16 -alkenylsuccinic acid, stabilized silicate and further corrosion-inhibiting additives.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: November 12, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Knut Oppenlaender, Juergen Mohr, Gert Liebold, Guenter Frey
  • Preparation of alkoxysilanes containing a low level of chlorine compounds
    Patent number: 4827008
    Abstract: Alkoxysilanes containing low levels of chlorine compounds are prepared by stepwise etherification of chlorosilanes with alcohols in liquid phase and removal of the resulting hydrogen chloride by reacting the alkoxysilane obtained, which still contains a small amount of chlorine compound, with a metal alkoxide in an amount which corresponds to a small stoichiometric excess based on the proportion of chlorine compound, and freeing the reaction product from the resulting salt.
    Type: Grant
    Filed: March 8, 1988
    Date of Patent: May 2, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Charalampos Gousetis, Knut Oppenlaender, Gert Liebold, Guenter Frey
  • Nitrite- and phosphate-free glycol-based coolant mixtures
    Patent number: 4810404
    Abstract: Glycol-based coolant mixtures which are free of nitrites and phosphates contain alkali metal salts of bis(carboxyalkyloxyphenyl)-2,2-propane and stabilized silicate and also further corrosion-inhibiting additives.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: March 7, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Charalampos Gousetis, Knut Oppenlaender, Gert Liebold, Guenter Frey
  • Phosphosilicone/silicate copolymers and their use as corrosion inhibitors and silicate stabilizers in antifreezes
    Patent number: 4629602
    Abstract: Organosilane/silicate copolymers obtainable by reacting an organic phosphosilicon compound of the formula I ##STR1## where n, X, Y, R.sup.1 and R.sup.2 have the meanings stated in the description, with an alkali metal silicate, radiator antifreezes containing these compounds, their use as corrosion inhibitors in radiator antifreezes based on glycol, a method of inhibiting corrosion of aluminum by aqueous cooling media, containing radiator antifreeze based on glycol, during the cooling of internal combustion engines, and the use of organic phosphosilicon compounds for stabilizing silicates.
    Type: Grant
    Filed: October 30, 1985
    Date of Patent: December 16, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Charalampos Gousetis, Knut Oppenlaender, Gert Liebold, Klaus Pfitzner
  • Protective additive for radiators in coolants containing water
    Patent number: 4324675
    Abstract: Alkylene glycol-based coolants free of nitrites, amines, and phosphates are metal corrosion inhibited with at least one nucleus-substituted benzoic acid and at least one conventional corrosion inhibitor for metals.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: April 13, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Barthold, Gert Liebold