Patents by Inventor Peter Stig Tomas Johansson

Peter Stig Tomas Johansson 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).

  • Method for recovery of stabilized polyhydroxyalkanoates from biomass that has been used to treat organic waste
    Patent number: 9487624
    Abstract: The invention is directed to a method of increasing the chemical and/or thermal stability of PHA in biomass where the biomass is contained within mixed liquor, and wherein the mixed liquor is treated by a combination of removing water from the mixed liquor and pH adjustment of the mixed liquor or maintenance of the pH of the mixed liquor within a selected pH range, and wherein the method includes reducing the pH of the mixed liquor below 6, or maintaining the pH of the mixed liquor below 6 for a selected period of time, and wherein the pH adjustment of the mixed liquor to below 6 or the maintenance of the pH of the mixed liquor below 6 gives rise to an increase in chemical and/or thermal stability of the PHA in the biomass.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: November 8, 2016
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Alan Gideon Werker, Patric Jannasch, Peter Stig Tomas Johansson, Per Olof Gosta Magnusson, Franciscus Hubertus Jacobus Maurer
  • Method of producing polyhydroxyalkanoate compounded plastics having improved mechanical properties
    Patent number: 9469746
    Abstract: A method of enhancing mechanical properties of compounds formed with polyhydroxyalkanoates (PHA) recovered by biomass where the biomass comprises PHA and non-PHA materials. The method includes dissolving the PHA and non-PHA materials in a solution and separating the PHA and non-PHA materials from the solution. Further, the method includes compounding the separated PHA material and at least some of the separated non-PHA material into a compounded plastic having improved mechanical properties.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: October 18, 2016
    Assignees: Veolia Water Solutions and Technologies Support, University of Queensland
    Inventors: Alan Gideon Werker, Mónica Vanessa Arcos Hernández, Bronwyn Glenice Laycock, Steven Pratt, Peter Stig Tomas Johansson, Per Olof Gösta Magnusson
  • PROCESS FOR THE EXTRACTION OF POLYHYDROXYALKANOATES FROM BIOMASS
    Publication number: 20150368393
    Abstract: An industrial scale batch or semi-continuous batch PHA extraction process wherein the process operating conditions and control may be quantitatively tuned to batch-to-batch variations based on a practical bench scale assessment but more preferably by means of a calibrated chemometric assessment of the biomass quality. Tuning involves the selection of biomass loading conditions that are commensurate with process solvent and PHA type. Batch operating times and temperatures are matched to modelled and monitored extraction kinetics. PHA-rich solvent gelation is exploited by controlling PHA-rich solvent gel formation. In combination a process Is disclosed that permits for robust and consistent recovered product quality control while at the same time enabling to improve overall process economics.
    Type: Application
    Filed: February 12, 2014
    Publication date: December 24, 2015
    Applicant: VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT
    Inventors: Alan Gideon WERKER, Peter Stig Tomas JOHANSSON, Per Olof Gosta MAGNUSSON
  • METHOD OF PRODUCING POLYHYDROXYALKANOATE COMPOUNDED PLASTICS HAVING IMPROVED MECHANICAL PROPERTIES
    Publication number: 20150291768
    Abstract: A method of enhancing mechanical properties of compounds formed with polyhydroxyalkanoates (PHA) recovered by biomass where the biomass comprises PHA and non-PHA materials. The method includes dissolving the PHA and non-PHA materials in a solution and separating the PHA and non-PHA materials from the solution. Further, the method includes compounding the separated PHA material and at least some of the separated non-PHA material into a compounded plastic having improved mechanical properties.
    Type: Application
    Filed: December 18, 2013
    Publication date: October 15, 2015
    Applicants: UNIVERSITY OF QUEENSLAND, VEOLIA WATER SOLUTIONS AND TECHNOLOGIES SUPPORT
    Inventors: Alan Gideon WERKER, Mónica Vanessa ARCOS HERNÁNDEZ, Bronwyn Glenice LAYCOCK, Steven PRATT, Peter Stig Tomas JOHANSSON, Per Olof Gösta MAGNUSSON
  • Method for Recovery of Stabilized Polyhydroxyalkanoates from Biomass that has been used to Treat Organic Waste
    Publication number: 20130203954
    Abstract: The invention is directed to a method of increasing the chemical and/or thermal stability of PHA in biomass where the biomass is contained within mixed liquor, and wherein the mixed liquor is treated by a combination of removing water from the mixed liquor and pH adjustment of the mixed liquor or maintenance of the pH of the mixed liquor within a selected pH range, and wherein the method includes reducing the pH of the mixed liquor below 6, or maintaining the pH of the mixed liquor below 6 for a selected period of time, and wherein the pH adjustment of the mixed liquor to below 6 or the maintenance of the pH of the mixed liquor below 6 gives rise to an increase in chemical and/or thermal stability of the PHA in the biomass.
    Type: Application
    Filed: August 18, 2010
    Publication date: August 8, 2013
    Applicant: VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT
    Inventors: Alan Gideon Werker, Peter Stig Tomas Johansson, Per Olof Gosta Magnusson, Franciscus Hubertus Jacobus Maurer, Patric Jannasch