Patents by Inventor Edwin Donath

Edwin Donath 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).

  • Production of nanocapsules and microcapsules by layer-wise polyelectrolyte self-assembly
    Patent number: 8168226
    Abstract: The invention relates to capsules coated with a polyelectrolyte shell and methods for the production thereof.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: May 1, 2012
    Assignee: Max-Planck-Gesellschaft zur Forderung der Wissenschaften E.V.
    Inventors: Edwin Donath, Gleb B. Sukhorukov, Karl-Heinz Lerche, Andreas Voigt, Hans Bäumler, Frank Caruso, Helmuth Möhwald
  • Production of nanocapsules and microcapsules by layer-wise polyelectrolyte self-assembly
    Patent number: 8092836
    Abstract: The invention relates to capsules coated with a polyelectrolyte shell and methods for the production thereof.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: January 10, 2012
    Assignee: Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V.
    Inventors: Edwin Donath, Gleb B. Sukhorukov, Karl-Heinz Lerche, Andreas Voigt, Hans Bäumler, Frank Caruso, Helmuth Möhwald
  • Production of nanocapsules and microcapsules by layer-wise polyelectrolyte self-assembly
    Publication number: 20060275375
    Abstract: The invention relates to capsules coated with a polyelectrolyte shell and methods for the production thereof.
    Type: Application
    Filed: August 10, 2006
    Publication date: December 7, 2006
    Inventors: Edwin Donath, Gleb Sukhorukov, Karl-Heinz Lerche, Andreas Voigt, Hans Baumler, Frank Caruso, Helmuth Mohwald
  • Production of nanocapsules and microcapsules by layer-wise polyelectrolyte self-assembly
    Publication number: 20060275373
    Abstract: The invention relates to capsules coated with a polyelectrolyte shell and methods for the production thereof.
    Type: Application
    Filed: August 10, 2006
    Publication date: December 7, 2006
    Inventors: Edwin Donath, Gleb Sukhorukov, Karl-Heinz Lerche, Andreas Voigt, Hans Baumler, Frank Caruso, Helmuth Mohwald
  • Production of nanocapsules and microcapsules by layer-wise polyelectrolyte self-assembly
    Publication number: 20060275374
    Abstract: The invention relates to capsules coated with a polyelectrolyte shell and methods for the production thereof.
    Type: Application
    Filed: August 10, 2006
    Publication date: December 7, 2006
    Inventors: Edwin Donath, Gleb Sukhorukov, Karl-Heinz Lerche, Andreas Voigt, Hans Baumler, Frank Caruso, Helmuth Mohwald
  • Production of nanocapsules and microcapsules by layer-wise polyelectrolyte self-assembly
    Patent number: 7101575
    Abstract: The invention relates to capsules coated with a polyelectrolyte shell and methods for the production thereof.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: September 5, 2006
    Assignee: Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V.
    Inventors: Edwin Donath, Gleb B. Sukhorukov, Karl-Heinz Lerche, Andreas Voigt, Hans Bäumler, Frank Caruso, Helmuth Möhwald
  • Production of polyelectrolyte capsules by surface precipitation
    Patent number: 7056554
    Abstract: The invention concerns a method for producing nanocapsules and microcapsules comprising a polyelectrolyte shell by surface precipitation from the solution, by applying a shell to template particles comprising the steps (a) providing a dispersion of template particles of suitable size in a salt-containing liquid phase which contains the components required to form the shell in a dissolved form and (b) precipitating the components from the liquid phase onto the template particles under conditions which enable the formation of a shell around the template particles that has a thickness of from 1 to 100 nm.
    Type: Grant
    Filed: August 1, 2001
    Date of Patent: June 6, 2006
    Assignee: Max-Planck-Gesellschaft zur Forderung der Wissenschaften E.V.
    Inventors: Andreas Voigt, Gleb Sukhorukov, Igor Radtchenko, Alexei Antipov, Edwin Donath, Helmuth Möhwald
  • Polyelectrolyte coverings on biological templates
    Patent number: 6699501
    Abstract: The invention relates to a method for producing capsules provided with a polyelectrolyte covering, and to the capsules obtained using this method.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: March 2, 2004
    Assignee: Max-Planck-Gesellschaft zur Forderung der Wissenschaften. e.V.
    Inventors: Björn Neu, Hans Bäumler, Edwin Donath, Sergio Moya, Gleb Sukhobukov, Helmuth Möhwald, Frank Caruso
  • Controlled and sustained release properties of polyelectrolyte multilayer capsules
    Publication number: 20040013721
    Abstract: Method of layer-by-layer (LbL) assembly of oppositely charged polyelectrolytes was applied to coat fluorescein particles. These particles with a size of 4-9 &mgr;m were prepared by precipitation of fluorescein at pH 2. Polysterensulfonate (PSS) and polyallylamine (PAH) were used to compose the polyelectrolyte shell on the fluorescein core. The release of fluorescein molecules through the polyelectrolyte shell core dissolution was monitored at pH 8 by increasing fluorescence intensity. The number of polyelectrolyte layers sufficient to sustain fluorescence release was found to be 8-10. Sequentially adsorbed layers prolong core dissolution time for minutes. The permeability of polyelectrolyte multilayers of the thickness of 20 nm is about 10−8 m/s. Mechanism of fluorescence diffusion and osmotically supported release is under discussion. The features of release profile and possible applications or LbL method for shell formation in order to control release properties for entrapped materials are outlined.
    Type: Application
    Filed: June 30, 2003
    Publication date: January 22, 2004
    Inventors: Alexei Antipov, Euridice Vieira, Gemma Ibarz, Gleb Sukhorukov, Lars Dhne, Changyou Gao, Edwin Donath, Helmuth Mohwald
  • Encapsulation of liquid template particles
    Publication number: 20040013738
    Abstract: The invention relates to a method for applying a shell to liquid template particles, comprising the following steps: (a) preparation of an emulsion of liquid template particles in a continuous liquid or gel phase, whereby at least one amphiphilic polyelectrolyte or polyelectrolyte complex, or a copolymer of charged hydrophilic monomers and oil soluble monomers is dissolved in the fluid template particles and/or the continuous phase and a film is formed at the phase boundary between the liquid template particle and the continuous phase and (b) application of a shell to the film formed at the phase boundary.
    Type: Application
    Filed: January 31, 2003
    Publication date: January 22, 2004
    Inventors: Andreas Voigt, Sukhorukov Gleb, Alexei Antipov, Edwin Donath, Horst Seibt
  • Production of nanocapsules and microcapsules by layer-wise polyelectrolyte self-assembly
    Publication number: 20030219384
    Abstract: The invention relates to capsules coated with a polyelectrolyte shell and methods for the production thereof.
    Type: Application
    Filed: February 27, 2003
    Publication date: November 27, 2003
    Inventors: Edwin Donath, Gleb B. Sukhorukov, Karl-Heinz Lerche, Andreas Voigt, Hans Baumler, Frank Caruso, Helmuth Mohwald
  • Production of polyelectrolyte capsules by surface precipitation
    Publication number: 20030175517
    Abstract: The invention concerns a method for producing nanocapsules and microcapsules comprising a polyelectrolyte shell by surface precipitation from the solution, by applying a shell to template particles comprising the steps (a) providing a dispersion of template particles of suitable size in a salt-containing liquid phase which contains the components required to form the shell in a dissolved form and (b) precipitating the components from the liquid phase onto the template particles under conditions which enable the formation of a shell around the template particles that has a thickness of from 1 to 100 nm.
    Type: Application
    Filed: February 3, 2003
    Publication date: September 18, 2003
    Inventors: Andreas Voigt, Gleb Sukhorukov, Igor Radtchenko, Alexei Antipov, Edwin Donath, Helmuth Mohwald
  • Fabrication of multilayer-coated particles and hollow shells via electrostatic self-assembly of nanocomposite multilayers on decomposable colloidal templates
    Patent number: 6479146
    Abstract: The invention refers to a new process for preparing coated particles and hollow shells by coating colloidal particles with alternating layers of oppositely charged nanoparticles and polyelectrolytes and optionally removing the colloidal cores.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: November 12, 2002
    Assignee: Max-Planck-Gesellschaft zur Forderung der Wissenschaften, E.V.
    Inventors: Frank Caruso, Rachel Anne Caruso, Edwin Donath, Helmuth Möhwald, Gleb Sukhorukov