Patents by Inventor Bert Pettersson

Bert Pettersson 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).

  • Polymer Shells
    Publication number: 20190091646
    Abstract: The present invention relates to a method for the preparation of polymer shells, preferably composed of cellulose or hemicellulose, comprising the steps of dissolving the polymer component in a first solvent, preferably an organic solvent and precipitating the polymer component by contacting the first solution with a second solvent, which second solvent has a polar character, and in which second solvent the polymer component is essentially insoluble, thereby obtaining polymer shells. Moreover, the invention refers to the polymer shells as such, having permeable and responsive properties, as well as various applications comprising such polymer shells within the fields of drug delivery, separation techniques, and inter alia filling material.
    Type: Application
    Filed: September 11, 2018
    Publication date: March 28, 2019
    Inventors: Christopher Carrick, Bert Pettersson, Lars Wagberg, Marcus Ruda
  • Polymer shells
    Patent number: 10099192
    Abstract: The present invention relates to a method for the preparation of polymer shells, preferably composed of cellulose or hemicellulose, comprising the steps of dissolving the polymer component in a first solvent, preferably an organic solvent and precipitating the polymer component by contacting the first solution with a second solvent, which second solvent has a polar character, and in which second solvent the polymer component is essentially insoluble, thereby obtaining polymer shells. Moreover, the invention refers to the polymer shells as such, having permeable and responsive properties, as well as various applications comprising such polymer shells within the fields of drug delivery, separation techniques, and inter alia filling material.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: October 16, 2018
    Assignee: Cellutech AB
    Inventors: Christopher Carrick, Bert Pettersson, Lars Wågberg, Marcus Ruda
  • POLYMER SHELLS
    Publication number: 20120053250
    Abstract: The present invention relates to a method for the preparation of polymer shells, preferably composed of cellulose or hemicellulose, comprising the steps of dissolving the polymer component in a first solvent, preferably an organic solvent and precipitating the polymer component by contacting the first solution with a second solvent, which second solvent has a polar character, and in which second solvent the polymer component is essentially insoluble, thereby obtaining polymer shells. Moreover, the invention refers to the polymer shells as such, having permeable and responsive properties, as well as various applications comprising such polymer shells within the fields of drug delivery, separation techniques, and inter alia filling material.
    Type: Application
    Filed: February 9, 2010
    Publication date: March 1, 2012
    Applicant: SWETREE TECHNOLOGIES AB
    Inventors: Christopher Carrick, Bert Pettersson, Lars Wågberg, Marcus Ruda