Patents Assigned to BioCrystal Ltd.
  • Patent number: 6479252
    Abstract: Provided is a cell culture apparatus for culturing cells, and optionally, for performing magnetic separation of cells desired to be cultured. The cell culture apparatus preferably comprises a frame; two membranes, preferably each being gas permeable, which are securedly sealed in a leak-proof selaing to a frame in forming a culture chamber there-between; and at least one resealable aperture to allow substances to be introduced into, or withdrawn from, the culture chamber.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: November 12, 2002
    Assignee: BioCrystal, Ltd.
    Inventors: Emilio Barbera-Guillem, M. Bud Nelson
  • Publication number: 20020155108
    Abstract: Provided is a method for loading dendritic cells ex vivo which utilizes immune complex-mediated uptake of a soluble antigen by dendritic cells. The method involves coculturing target cells in the presence of, but not in physical contact with, expanded dendritic cells. Added to the coculture is human antibody against the soluble antigen(s), resulting in formation of immune complexes. The immune complexes bind to, and are uptaken by, the expanded dendritic cells; and with subsequent processing of the antigen into peptides, the peptide is presented as part of a peptide-MHC complex on the dendritic cell surface. The method of the present invention allows for dendritic cell presentation by MHCI and/or MHCII complexes, depending on the nature of the one or more antigens.
    Type: Application
    Filed: April 8, 2002
    Publication date: October 24, 2002
    Applicant: BioCrystal, Ltd.
    Inventor: Emilio Barbera-Guillem
  • Patent number: 6455310
    Abstract: Provided is a cell culture apparatus for culturing cells, and optionally, for performing magnetic separation of cells desired to be cultured. The cell culture apparatus preferably comprises a frame; two membranes, preferably each being gas permeable, which are securedly sealed in a leak-proof selaing to a frame in forming a culture chamber therebetween; and at least one resealable aperture to allow substances to be introduced into, or withdrawn from, the culture chamber.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: September 24, 2002
    Assignee: BioCrystal Ltd.
    Inventor: Emilio Barbera-Guillem
  • Patent number: 6410309
    Abstract: Provided is a cell culture apparatus for culturing cells, and optionally, for performing magnetic separation of cells desired to be cultured. The cell culture apparatus preferably comprises a frame; at least one gas permeable membrane securedly sealed in a leak-proof sealing to a frame and an opposing surface comprising a rigid surface in forming a culture chamber therebetween; and at least one resealable aperture to allow substances to be introduced into, or withdrawn from, the culture chamber.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: June 25, 2002
    Assignee: BioCrystal LTD
    Inventors: Emilio Barbera-Guillem, M. Bud Nelson
  • Patent number: 6365124
    Abstract: Compositions are provided for detecting Tn antigen expressing-shed tumor antigen. The compositions include peptides having binding specificity for the Tn antigen; and a detector molecule comprising a peptide, according to the present invention, which is bound to a detectable label. The compositions may be used in a method to detect lymphoid tissues containing shed tumor antigen expressing the Tn antigen.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: April 2, 2002
    Assignee: Biocrystal, Ltd.
    Inventors: Alvaro Babino, Eduardo Osinaga, Emilio Barbera-Guillem
  • Patent number: 6268350
    Abstract: Provided are one or more polynucleotides, and a method for inhibiting tumor progression in an individual comprising administering to the individual a therapeutically effective amount of the one or more polynucleotides. The one or more polynucleotides comprise FasL sense polynucleotide, or FasL antisense, or a combination thereof.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: July 31, 2001
    Assignee: BioCrystal Ltd.
    Inventor: Emilio Barbera-Guillem
  • Patent number: 6252664
    Abstract: A fluorescence cube comprising a housing; an exciter filter which allows passage of an incident light comprising a spectral range of from about 200 nanometers to about 400 nanometers; and either a beam splitter or a dichroic mirror which directs the incident light in a desired direction, and which transmits an emitted light in a desired direction. Also disclosed is a method of using the fluorescence cube for acquiring multicolor fluorescence images, the method comprising fluorescence labeling of a substrate with more than one species of water-soluble nanocrystals; and imaging the labeled substrate with a detection system comprising the fluorescence cube by exposing the labeled substrate to an incident light comprising an excitation spectral range, and detecting a transmitted light comprising an emission spectral range.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: June 26, 2001
    Assignee: BioCrystal Ltd.
    Inventor: Emilio Barberá-Guillem
  • Patent number: 6251616
    Abstract: A method for screening for a pro-tumor immune response according to the present invention, the method comprises: contacting a clinical sample with one or more detector molecules for detecting, and then determining the amount of, mononuclear cell phenotype in the sample; and (b) comparing the amount of mononuclear cell phenotype determined in the sample to a reference value for the mononuclear cell phenotype; wherein a significant difference in the amount of mononuclear cell phenotype determined as compared to the reference value may be an indicator of the presence of a pro-tumor immune response. Also provided are assay kits for determining an amount of mononuclear cell phenotype in performing the methods according to the present invention.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: June 26, 2001
    Assignee: BioCrystal Ltd.
    Inventors: Emilio Barbera-Guillem, M. Bud Nelson
  • Patent number: 6245752
    Abstract: Methods and compositions are provided for tolerizing shed antigen-specific B cells involved in an immune complex-mediated disease progression. The composition comprises a substantially non-immunogenic carrier molecule to which is linked carbohydrate chains containing a suppressive amount of a repeated, antigenic carbohydrate determinant derived from a shed antigen of interest. In a method of tolerizing shed antigen-specific B cells involved in an immune complex-mediated disease progression, administered to an individual is a therapeutically effective amount of the composition which, when contacting the shed antigen-specific B cells, induces tolerization of the shed antigen-specific B cells.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: June 12, 2001
    Assignee: BioCrystal Ltd.
    Inventors: Emilio Barbera-Guillem, M. Bud Nelson
  • Patent number: 6224866
    Abstract: A method for treating a pro-tumor immune response in an individual having, or suspected of having, a pro-tumor immune response, by administering a therapeutically effective amount of an immunotherapeutic composition which binds to a determinant on B cells, resulting in B cell depletion including of B cells that may be involved in promotion of tumor progression. Also provided are immunotherapeutic compositions which can be used for treating a pro-tumor immune response.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: May 1, 2001
    Assignee: BioCrystal Ltd.
    Inventor: Emilio Barbera-Guillem
  • Patent number: 6179912
    Abstract: Provided is a system and continuous flow process for producing monodisperse semiconductor nanocrystals comprising reservoirs for the starting materials, a mixing path in which the starting materials are mixed, a first reactor in which the mixture of starting materials is mixed with a coordinating solvent and in which nucleation of particles occurs, a second reactor in which controlled growth of the nanocrystals occurs, and a growth termination path in which the growth of the nanocrystals is halted.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: January 30, 2001
    Assignee: BioCrystal Ltd.
    Inventors: Emilio Barbera-Guillem, Marlin O. Thurston
  • Patent number: 6126835
    Abstract: Provided is a magnetic separation device comprising a container having one or more outer surfaces; at least one magnetic sheet; and a physical coupler that is used to detachably secure the container to the magnetic sheet.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: October 3, 2000
    Assignee: BioCrystal Ltd.
    Inventors: Emilio Barbera-Guillem, Marlin O. Thurston
  • Patent number: 6114038
    Abstract: Provided are compositions comprising water-soluble, functionalized nanocrystals. The water-soluble functionalized nanocrystals comprise quantum dots capped with a layer of a capping compound, and further comprise, by operably linking and in a successive manner, one or more additional compounds. The one or more additional compounds is comprised of at least a diaminocarboxylic acid which is operatively linked to the capping compound, and may further comprise an amino acid, an affinity ligand, or a combination thereof. Also provided are methods of using the functionalized nanocrystals having an affinity ligand to detect the presence or absence of a target substrate in a sample.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: September 5, 2000
    Assignee: BioCrystal Ltd.
    Inventors: Stephanie L. Castro, Emilio Barbera-Guillem
  • Patent number: 6110380
    Abstract: Provided is a magnetic separation device comprising a container having one or more outer surfaces; at least one flexible magnetic sheet; and a non-permanent adhesive that is used to detachably secure an outer surface of the container to a flexible magnetic sheet.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: August 29, 2000
    Assignee: BioCrystal Ltd.
    Inventor: Emilio Barbera-Guillem