Patents by Inventor Jan Botha

Jan Botha 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).

  • Patent number: 11359261
    Abstract: Described herein are compositions and methods for preferentially separating mercury from a metal product where both are present in an ore leachate. The separation is accomplished by adding a precipitating agent and a coagulant to an ore leachate followed by separating a mercury-laden precipitate therefrom to collect the treated leachate. The treated leachate includes about 0 to 50% by weight of the mercury and about 90% to 100% by weight of the metal product present in the ore leachate. In embodiments, the method further includes adding a flocculant to the ore leachate prior to the separating of the mercury-laden precipitate.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: June 14, 2022
    Assignee: Ecolab USA Inc.
    Inventors: Jan Botha, Onur Toprak, Nicholas Ergang, Nikolas Zwaneveld, Daniel Child, Tolga Ercan
  • Publication number: 20200283871
    Abstract: Described herein are compositions and methods for preferentially separating mercury from a metal product where both are present in an ore leachate. The separation is accomplished by adding a precipitating agent and a coagulant to an ore leachate followed by separating a mercury-laden precipitate therefrom to collect the treated leachate. The treated leachate includes about 0 to 50% by weight of the mercury and about 90% to 100% by weight of the metal product present in the ore leachate. In embodiments, the method further includes adding a flocculant to the ore leachate prior to the separating of the mercury-laden precipitate.
    Type: Application
    Filed: May 20, 2020
    Publication date: September 10, 2020
    Inventors: Jan Botha, Onur Toprak, Nicholas Ergang, Nikolas Zwaneveld, Daniel Child, Tolga Ercan
  • Patent number: 10662505
    Abstract: Described herein are compositions and methods for preferentially separating mercury from a metal product where both are present in an ore leachate. The separation is accomplished by adding a precipitating agent and a coagulant to an ore leachate followed by separating a mercury-laden precipitate therefrom to collect the treated leachate. The treated leachate includes about 0 to 50% by weight of the mercury and about 90% to 100% by weight of the metal product present in the ore leachate. In embodiments, the method further includes adding a flocculant to the ore leachate prior to the separating of the mercury-laden precipitate.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: May 26, 2020
    Assignee: Ecolab USA Inc.
    Inventors: Jan Botha, Onur Toprak, Nicholas Ergang, Nikolas Zwaneveld, Daniel Child, Tolga Ercan
  • Publication number: 20170335429
    Abstract: Described herein are compositions and methods for preferentially separating mercury from a metal product where both are present in an ore leachate. The separation is accomplished by adding a precipitating agent and a coagulant to an ore leachate followed by separating a mercury-laden precipitate therefrom to collect the treated leachate. The treated leachate includes about 0 to 50% by weight of the mercury and about 90% to 100% by weight of the metal product present in the ore leachate. In embodiments, the method further includes adding a flocculant to the ore leachate prior to the separating of the mercury-laden precipitate.
    Type: Application
    Filed: May 17, 2017
    Publication date: November 23, 2017
    Inventors: Jan Botha, Onur Toprak, Nicholas Ergang, Nikolas Zwaneveld, Daniel Child, Tolga Ercan
  • Publication number: 20060293548
    Abstract: The invention provides a method of preparing a metathesis catalyst, the method including the steps of mixing a transition metal oxide containing aqueous solution having a pH of 9 or higher with a carrier. The water is then removed from the mixture by means of evaporation to provide a metathesis catalyst.
    Type: Application
    Filed: August 14, 2003
    Publication date: December 28, 2006
    Inventors: Alta Spamer, Jan Botha, Chart Schalkwyk, Denzil Moodley, Thamsanga Dube
  • Publication number: 20050065389
    Abstract: According to the present invention there is provided a process of increasing the carbon chain length of an olefinic compound comprising the steps of providing a starting olefinic compound and subjecting it to hydroformylation to produce an aldehyde and/or alcohol with an increased carbon chain length compared to the starting olefinic compound. Optionally the aldehyde that may form during the hydroformylation reaction is hydrogenated to convert it to an alcohol which has an increased carbon chain length compared to the starting olefinic compound. The alcohol with the increased carbon chain length is subjected to dehydration to produce an olefinic compound with an increased carbon chain length compared to the starting olefinic compound. The invention also relates to olefinic compounds produced by the process.
    Type: Application
    Filed: September 11, 2002
    Publication date: March 24, 2005
    Inventors: Cornelis De Bruyn, Ewald De Wet, Jan Botha, Jan Reynhardt