Patents by Inventor Stylianos Savakis

Stylianos Savakis 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).

  • Corrosion inhibitor for protecting metallic materials in strongly alkaline medium
    Patent number: 7468158
    Abstract: Corrosion inhibitor and method of protecting metallic materials in strongly alkaline medium by means of a corrosion inhibitor, characterized in that it contains an amine containing at least one CH group bound to the nitrogen.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: December 23, 2008
    Assignee: LANXESS Deutschland GmbH
    Inventors: Lutz Heuer, Stylianos Savakis, Helmut Diekmann, Eberhard Zirngiebl
  • Corrosion inhibitor for protecting metallic materials in strongly alkaline medium
    Publication number: 20080267813
    Abstract: Corrosion inhibitor and method of protecting metallic materials in strongly alkaline medium by means of a corrosion inhibitor, characterized in that it contains an amine containing at least one CH group bound to the nitrogen.
    Type: Application
    Filed: June 23, 2008
    Publication date: October 30, 2008
    Inventors: Lutz Heuer, Stylianos Savakis, Helmut Diekmann, Eberhard Zirngiebl
  • Corrosion inhibitor for protecting metallic materials in strongly alkaline medium
    Publication number: 20030152479
    Abstract: Corrosion inhibitor and method of protecting metallic materials in strongly alkaline medium by means of a corrosion inhibitor, characterized in that it contains an amine containing at least one CH group bound to the nitrogen.
    Type: Application
    Filed: January 23, 2003
    Publication date: August 14, 2003
    Inventors: Lutz Heuer, Stylianos Savakis, Helmut Diekmann, Eberhard Zirngiebl
  • Use of wrought and cast materials and welding fillers for making and using hot concentrated sulphuric acid or oleum
    Patent number: 5306477
    Abstract: In a process such as the preparation of sulphuric acid wherein a wrought or cast material or a welding filler is contacted with hot concentrated sulphuric acid or oleum of up to 10 wt-%, the improvement which comprises forming the contact portion of said wrought or cast material or said filler of an austenitic iron-nickel-chromimum-silicon alloy comprising about15.5 to 17.5 wt-% nickel10 to 12 wt-% chromium5.7 to 6.5 wt-% siliconup to max. 0.06 wt-% carbonup to max. 1.5 wt-% manganeseup to max. 0.03 wt-% phosphorusup to max. 0.03 wt-% sulphurup to max. 0.15 wt-% titaniumup to max. 0.8 wt-% zirconiumup to max. 0.2 wt-% nitrogen andup to max. 0.3 wt-% molybdenumand the remainder iron,together with minimal quantities of normally present impurities, including the deoxidizing elements magnesium, aluminum and calcium.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: April 26, 1994
    Assignee: Bayer Aktiengesellschaft
    Inventors: Elmar-Manfred Horn, Stylianos Savakis
  • Stainless wrought and cast materials and welding additives for structural units exposed to hot, concentrated sulfuric acid
    Patent number: 5120496
    Abstract: In the processing of hot concentrated sulfuric acid or oleum in steel apparatus, the improvement wherein said apparatus is formed of an alloyed material comprising an iron-chrome-nickel-silicon alloy containing 13 to 32% by weight Cr, 5 to 25% by weight nickel and 4 to 9% by weight Si and having a structure containing more than 10% delta-ferrite.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: June 9, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Elmar-Manfred Horn, Stylianos Savakis
  • Stainless wrought and cast materials and welding additives for structural units exposed to hot, concentrated sulfuric acid
    Patent number: 5051233
    Abstract: In the processing of hot concentrated sulfuric acid or oleum in steel apparatus, the improvement wherein said apparatus is formed of an alloyed material comprising an iron-chrome-nickel-silicon alloy containing 13 to 32% by weight Cr, 5 to 25% by weight nickel and 4 to 9% by weight Si and having a structure containing more than 10% delta-ferrite.
    Type: Grant
    Filed: January 11, 1990
    Date of Patent: September 24, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Elmar-Manfred Horn, Stylianos Savakis