Patents by Inventor Heinrich Schwab

Heinrich Schwab 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 deodorizing sludge
    Patent number: 4541986
    Abstract: Sludge, especially sewage sludge is deodorized, particularly to obtain the biomass by treating the waste water sludge (pollution sludge) with an active oxygen developing compound at 5.degree. to 40.degree.C.
    Type: Grant
    Filed: March 16, 1984
    Date of Patent: September 17, 1985
    Assignee: Degussa Aktiengesellschaft
    Inventors: Heinrich Schwab, Werner Kaschke
  • Process for detoxification of formaldehyde containing waste waters
    Patent number: 4104162
    Abstract: Formaldehyde containing waste water is detoxified by treating the waste water with hydrogen peroxide in the presence of alkali at an initial temperature of 10.degree.-35.degree. C. In an alternative and preferred form of the invention the waste water is heated to a temperature of at least 50.degree. C and then 10-35% of the hydrogen peroxide equivalent to the formaldehyde is added.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: August 1, 1978
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Koessler
    Inventors: Helmut Junkermann, Heinrich Schwab