Patents by Inventor Richard Loew

Richard Loew 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 the purification of industrial waste-waters
    Patent number: 5405532
    Abstract: The invention relates to a process for treating industrial waste water which comprises either: (a) pre-treating the waste water with at least two different pre-treatments selected from adsorption, membrane filtration and oxidation and then, biologically purifying the waste water or, (b) neutralizing and biologically purifying the waste water and then after-treating the waste water either by membrane filtration in combination with adsorption or oxidation or, by oxidation optionally in combination with adsorption or filtration on a nanofiltration membrane or, by filtration on a nanofiltration membrane.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: April 11, 1995
    Assignee: Sandoz Ltd.
    Inventors: Richard Loew, Wolfgang Samhaber, Anton Wyss
  • Process for the purification of industrial waste-waters by nanofiltration
    Patent number: 5308492
    Abstract: The invention relates to a process for treating industrial waste water which comprises either: (a) pretreating the waste water with at least two different pretreatments selected from adsorption, membrane filtration and oxidation and then, biologically purifying the waste water or, (b) neutralizing and biologically purifying the waste water and then after-treating the waste water either by membrane filtation in combination with adsorption or oxidation or, by oxidation optionally in combination with adsorption or filtration on a nanofiltration membrane or, by filtration on a nanofiltration membrane.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: May 3, 1994
    Assignee: Sandoz Ltd.
    Inventors: Richard Loew, Wolfgang Samhaber, Anton Wyss
  • Process for the purification of industrial waste-waters
    Patent number: 5039416
    Abstract: The invention relates to a process for treating industrial waste water which comprises either: (a) pre-treating the waste water with at least two different pre-treatments selected from adsorption, membrane filtration and oxidation and then, biologically purifying the waste water or, (b) neutralizing and biologically purifying the waste water and then after-treating the waste water either by membrane filtration in combination with adsorption or oxidation or, by oxidation optionally in combination with adsorption or filtration on a nanofiltration membrane or, by filtration on a nanofiltration membrane.
    Type: Grant
    Filed: May 3, 1989
    Date of Patent: August 13, 1991
    Assignee: Sandoz Ltd.
    Inventors: Richard Loew, Wolfgang Samhaber, Anton Wyss