Patents by Inventor Kristofer Tvingstedt

Kristofer Tvingstedt 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).

  • Micro and nano structures in an elastomeric material
    Patent number: 8017218
    Abstract: The invention relates to an elastomeric device (105), wherein the elastomeric device contains a relief structure with indentations with respect to the base (110), (102) and wherein selected ones of said indentations comprise at least two indentation depths (112), (108) and indentation widths (101), (107). It also relates to a method of making a master for construction of said elastomeric device comprising a procedure to provide a pattern on a substrate of a suitable material. One step in. the construction of said elastomeric device comprises a molding procedure of an elastomer. Methods of using the elastomeric device in printing, fluidic control, sorting, lab-on-a-chip devices are also disclosed.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: September 13, 2011
    Assignee: Forskarpatent I Linkoping AB
    Inventors: Mahiar Hamedi, Kristofer Tvingstedt, Peter Asberg, Olle Inganas
  • PHOTOVOLTAIC DEVICE WITH ENHANCED LIGHT HARVESTING
    Publication number: 20100186798
    Abstract: A photovoltaic device optical system for enhanced light harvesting with a transparent layer of dielectric material having on one side an array of micro-lenses and on the opposite side a metal reflective film with an array of openings. The micro-lenses focus direct sunlight impinging thereon through the openings, to separate direct sunlight and diffuse sunlight. The photovoltaic device has a first photovoltaic cell system for the exploitation of the direct sunlight located in the opposite hemi-space of the micro-lenses array with respect to the plane of the openings array and a second photovoltaic cell system for the exploitation of diffuse sunlight, located in the same hemi-space containing the micro-lenses array with respect to the plane of the openings array.
    Type: Application
    Filed: May 28, 2007
    Publication date: July 29, 2010
    Applicant: Consiglio Nazionale Delle Ricerche- Infm Istituto Nazionale Per La Fisica Della Materia
    Inventors: Massimo Tormen, Olle Inganas, Kristofer Tvingstedt, Simone Dal Zilio
  • MICRO AND NANO STRUCTURES IN AN ELASTOMERIC MATERIAL
    Publication number: 20090053471
    Abstract: The invention relates to an elastomeric device (105), wherein the elastomeric device contains a relief structure with indentations with respect to the base (110), (102) and wherein selected ones of said indentations comprise at least two indentation depths (112), (108) and indentation widths (101), (107). It also relates to a method of making a master for construction of said elastomeric device comprising a procedure to provide a pattern on a substrate of a suitable material. One step in. the construction of said elastomeric device comprises a molding procedure of an elastomer. Methods of using the elastomeric device in printing, fluidic control, sorting, lab-on-a-chip devices are also disclosed.
    Type: Application
    Filed: March 8, 2006
    Publication date: February 26, 2009
    Applicants: OPTOVENT AB, Forskarpatent i Linkoping AB
    Inventors: Mahiar Hamedi, Kristofer Tvingstedt, Peter Asberg, Olle Inganas