Patents by Inventor Claus P. Jakob

Claus P. Jakob 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).

  • Motor fuel for internal combustion engines
    Patent number: 5004478
    Abstract: A motor fuel for internal combustion engines contains a small amount of an additive comprising(a) a conventional amino- or amido-containing detergent for cleaning, or keeping clean, the intake system and(b) as base oil a mixture of(ba) a polyether based on propylene oxide or butylene oxide and having a molecular weight of not less than 500 and(bb) an ester of a monocarboxylic or polycarboxylic acid and an alkanol or polyol, this ester having a minimum viscosity of 2 mm.sup.2 /s at 100.degree. C.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: April 2, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Henning Vogel, Hans P. Rath, Claus P. Jakob, Knut Oppenlaender
  • Ammonium salts of polymaleic acids, and their use as corrosion inhibitors in mineral oils
    Patent number: 4435298
    Abstract: Salts of polymaleic acids, having molecular weights of from 200 to 1,500, with amines, of the formula ##STR1## where R.sup.1 and R.sup.2 are identical or different and each is hydrogen, C.sub.9 -C.sub.20 -alkyl or C.sub.9 -C.sub.20 -alkenyl and R.sup.3 is C.sub.9 -C.sub.20 -alkyl or C.sub.9 -C.sub.20 -alkenyl.
    Type: Grant
    Filed: September 29, 1981
    Date of Patent: March 6, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Knut Oppenlaender, Karl Stork, Hans-Henning Vogel, Erich Schwartz, Claus P. Jakob