Patents by Inventor Lennart Bergstrom

Lennart Bergstrom 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: 11091877
    Abstract: The present invention relates to cellular solid materials comprising cellulose nanofibers (CNF) and an anionic or non-ionic surfactant, a method for preparation of such materials, as well as their use.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: August 17, 2021
    Assignee: Cellutech AB
    Inventors: Erik Johansson, Nicholas Tchang Cervin, Korneliya Gordeyeva, Lennart Bergstrom, Lars-Erik Wagberg
  • Patent number: 10786820
    Abstract: The present invention provides a method for citrus fruit processing comprising the steps of introducing liquid citrus fruit material to be processed via an inlet to a centrifugal separator being mechanically hermetically sealed at the inlet and at the liquid outlets; separating the citrus fruit material in the separator to obtain at least a liquid heavy phase and a liquid light phase, wherein the density of the liquid heavy phase is higher than the density of the liquid light phase; discharging the liquid heavy phase via a liquid heavy phase outlet and the liquid light phase via a liquid light phase outlet of the separator; measuring at least one parameter of the discharged liquid heavy phase and/or liquid light phase, wherein the parameter is related to a concentration of the heavy phase in the liquid light phase, or vice versa; and adjusting the counter pressure of the liquid heavy phase outlet with respect to the liquid light phase outlet, or vice versa, based on the measurement in step d) so as to control
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: September 29, 2020
    Assignee: ALFA LAVAL CORPORATE AB
    Inventors: Lennart Bergström, Morgan Persson, Bram De Meulemeester
  • Publication number: 20170314200
    Abstract: The present invention relates to cellular solid materials comprising cellulose nanofibers (CNF) and an anionic or non-ionic surfactant, a method for preparation of such materials, as well as their use.
    Type: Application
    Filed: April 21, 2015
    Publication date: November 2, 2017
    Inventors: Erik Johansson, Nicholas Tchang Cervin, Korneliya Gordeyeva, Lennart Bergstrom, Lars-Erik Wagberg
  • Patent number: 9556325
    Abstract: A hydrophobized nanofibrillated cellulose foam comprising a charged hydrophobic amine, a method for providing such foam and its use.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: January 31, 2017
    Assignee: Cellutech AB
    Inventors: Nicholas Tchang Cervin, Lennart Bergström, Lars-Erik Wågberg
  • Publication number: 20160271626
    Abstract: The present invention provides a method for citrus fruit processing comprising the steps of introducing liquid citrus fruit material to be processed via an inlet to a centrifugal separator being mechanically hermetically sealed at the inlet and at the liquid outlets; separating the citrus fruit material in the separator to obtain at least a liquid heavy phase and a liquid light phase, wherein the density of the liquid heavy phase is higher than the density of the liquid light phase; discharging the liquid heavy phase via a liquid heavy phase outlet and the liquid light phase via a liquid light phase outlet of the separator; measuring at least one parameter of the discharged liquid heavy phase and/or liquid light phase, wherein the parameter is related to a concentration of the heavy phase in the liquid light phase, or vice versa; and adjusting the counter pressure of the liquid heavy phase outlet with respect to the liquid light phase outlet, or vice versa, based on the measurement in step d) so as to control
    Type: Application
    Filed: October 27, 2014
    Publication date: September 22, 2016
    Applicant: ALFA LAVAL CORPORATE AB
    Inventors: Lennart BERGSTRÖM, Morgan PERSSON, Bram DE MEULEMEESTER
  • Publication number: 20150158995
    Abstract: A hydrophobized nanofibrillated cellulose foam comprising a charged hydrophobic amine, a method for providing such foam and its use.
    Type: Application
    Filed: July 10, 2013
    Publication date: June 11, 2015
    Applicant: Cellutech AB
    Inventors: Nicholas Tchang Cervin, Lennart Bergström, Lars-Erik Wågberg
  • Publication number: 20110105819
    Abstract: A zeolite secondary structure essentially free from binders and formed from zeolite powder (primary particles), wherein the tensile strength of the secondary structure is at least about 0.4 MPa. The use of the zeolite secondary structure materials as catalyst in hydrocarbon conversion processes.
    Type: Application
    Filed: April 1, 2009
    Publication date: May 5, 2011
    Inventors: Petr Vasiliev, Lennart Bergström, Niklas Hedin
  • Publication number: 20090274993
    Abstract: A manufacturing method and dental component are provided in which first and second cast parts are used with a casting material, such as a gel slurry, to form the dental component. The first cast part can be positioned in a space of the second cast part and a gel slurry can be applied intermediate the first and second cast parts. The gel slurry can then be solidified to form a solidified gel slurry. The first cast part can then be removed together with the solidified gel slurry from the second cast part. The solidified gel slurry can then be machined to form an exterior shape corresponding to a desired exterior shape of the dental component. Finally, the solidified gel slurry can be sintered.
    Type: Application
    Filed: December 22, 2006
    Publication date: November 5, 2009
    Applicant: NOBEL BIOCARE SERVICES AG
    Inventors: Lennart Bergstrom, Erik Laarz, Erik Adolfsson, Ng Sing Boon, Matts Andersson
  • Patent number: 6656976
    Abstract: A procedure for making well dispersed suspensions containing mixtures of powders displaying a low viscosity which remain stable over an extended period of time includes suspensions prepared in aqueous and/or ethanolic media using a cationic polyelectrolyte at the inherent pH of the mixture. The method is particularly useful for making robust slurries for subsequent spray drying of free flowing granules to be used in the fabrication of cemented carbide or cermet bodies.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: December 2, 2003
    Assignee: Sandvik Aktiebolag
    Inventors: Lennart Bergström, Eric Laarz
  • Publication number: 20020010219
    Abstract: A procedure for making well dispersed suspensions containing mixtures of powders displaying a low viscosity which remain stable over an extended period of time includes suspensions prepared in aqueous and/or ethanolic media using a cationic polyelectrolyte at the inherent pH of the mixture. The method is particularly useful for making robust slurries for subsequent spray drying of free flowing granules to be used in the fabrication of cemented carbide or cermet bodies.
    Type: Application
    Filed: April 26, 2001
    Publication date: January 24, 2002
    Inventors: Lennart Bergstrom, Eric Laarz
  • Patent number: 5340532
    Abstract: A method for manufacturing a sintered body by a) forming a slurry comprising a powder mixture, a dispersant providing steric stabilization for the powders and an organic solvent with a possible addition of one or more soluble polymers; b) transferring the slurry into a mold; and c) changing the temperature sufficient to cause gelation of the sterically stabilized suspension to form a green body. The method also includes d) removing the green body from the mold; e) transferring the green body to a chamber where the gelation temperature can be maintained and the pressure decreased to facilitate removal of the solvent to form a dried body; f) heating the body for a time sufficient to substantially remove the dispersant from the body and; g) sintering the body. The sintered body can be an insert for metal cutting tools.
    Type: Grant
    Filed: April 23, 1993
    Date of Patent: August 23, 1994
    Assignee: Sandvik AB
    Inventor: Lennart Bergstrom
  • Patent number: 4146793
    Abstract: Cast resins strengthened with carbonic fibrous material are used as the material for making parts which transmit X-rays and at the same time are subject to mechanical stresses.
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: March 27, 1979
    Assignee: Siemens AG
    Inventors: Lennart Bergstrom, Hans E. Warden