Patents by Inventor Elena Kyaw-Naing

Elena Kyaw-Naing 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).

  • Process for scavenging hydrogen sulfide using glyoxal
    Patent number: 5085842
    Abstract: A process for scavenging hydrogen sulfide from gases, in which the hydrogen sulfide-containing gas is introduced into an aqueous glyoxal solution of at least 15% by weight strength at a pH of a solution of 5 to 11 until the molar ratio of glyoxal to hydrogen sulfide is 3 to 2. The solid reaction product obtained in this way, which contains the hydrogen sulfide in bound form, is separated off. Owing to its stability and insolubility in acids and bases, it can be disposed of without problems.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: February 4, 1992
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Christoph Porz, Bernd Christensen, Elena Kyaw-Naing, Walter Gulden, Erich F. Paulus