Patents by Inventor Johannes Pieter Krol

Johannes Pieter Krol 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).

  • Sulphur reducing bacterium and its use in biological desulphurization processes
    Patent number: 6217766
    Abstract: A new sulfur-reducing bacterium denoted as KT7 is described. It is a low-GC Gram-positive bacterium related to the genus Desulfotomaculum, capable of reducing sulfite and sulfate to sulfide, having an optimum growth at a temperature between 48 and 70° C. at a pH of between 5 and 9 and at a conductivity of the liquid medium between 0 and 40 mS/cm. It can be used in a process for removing sulfur compounds from water, wherein the sulfur-containing water is subjected to anaerobic treatment with the new sulfur-reducing bacteria, with the addition of an electron donor. The sulfur-containing water can be spent scrubbing liquid from a flue gas desulfurization step.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: April 17, 2001
    Assignee: Biostar Development C.V.
    Inventors: Karl Otto Stetter, Harold Huber, Cees Jan Nico Buisman, Henk Dijkman, Johannes Pieter Krol