Patents by Inventor Frank Essler

Frank Essler 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).

  • Components for producing amphoteric liposomes
    Patent number: 9668973
    Abstract: The invention suggests amphoteric lipids wherein one or more amphoteric groups having an isoelectric point between 4 and 9 are substituted on a membranous or membrane-forming amphiphilic substance, as well as liposomes containing such compounds.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: June 6, 2017
    Assignee: Marina Biotech, Inc.
    Inventors: Frank Essler, Steffen Panzner, Gerold Endert
  • COMPONENTS FOR PRODUCING AMPHOTERIC LIPOSOMES
    Publication number: 20140227345
    Abstract: The invention suggests amphoteric lipids wherein one or more amphoteric groups having an isoelectric point between 4 and 9 are substituted on a membranous or membrane-forming amphiphilic substance, as well as liposomes containing such compounds.
    Type: Application
    Filed: October 11, 2013
    Publication date: August 14, 2014
    Applicant: Marina Biotech, Inc.
    Inventors: Frank Essler, Steffen Panzner, Gerold Endert
  • Components for producing amphoteric liposomes
    Patent number: 8580297
    Abstract: The invention suggests amphoteric lipids wherein one or more amphoteric groups having an isoelectric point between 4 and 9 are substituted on a membranous or membrane-forming amphiphilic substance, as well as liposomes containing such compounds.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: November 12, 2013
    Assignee: Marina Biotech, Inc.
    Inventors: Frank Essler, Steffen Panzner, Gerold Endert
  • pH-sensitive cationic lipids, and liposomes and nanocapsules containing the same
    Patent number: 8192753
    Abstract: The invention suggests a pH-sensitive cationic lipid with a pKa value between 3.5 and 8, according to the general formula cation-spacer-Y-spacer-X-lipid, wherein Y and X represent linking groups. Furthermore, liposomes are described, which liposomes include said optionally cationic lipids.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: June 5, 2012
    Assignee: Marina Biotech, Inc.
    Inventors: Frank Essler, Steffen Panzner, Gerold Endert
  • COMPONENTS FOR PRODUCING AMPHOTERIC LIPOSOMES
    Publication number: 20120100205
    Abstract: The invention suggests amphoteric lipids wherein one or more amphoteric groups having an isoelectric point between 4 and 9 are substituted on a membranous or membrane-forming amphiphilic substance, as well as liposomes containing such compounds.
    Type: Application
    Filed: November 8, 2011
    Publication date: April 26, 2012
    Inventors: Frank ESSLER, Steffen PANZNER, Gerold ENDERT
  • Amphoteric liposomes
    Publication number: 20110293695
    Abstract: Amphoteric liposomes are proposed, which comprise positive and negative membrane-based or membrane-forming charge carriers as well as the use of these liposomes.
    Type: Application
    Filed: August 9, 2010
    Publication date: December 1, 2011
    Applicant: NOVOSOM AG
    Inventors: Steffen Panzner, Stefan Fankh+e,uml a+ee nel, Frank Essler, Cornelia Panzner, Gerold Endert
  • Amphoteric liposomes and their use
    Patent number: 7858117
    Abstract: Amphoteric liposomes are proposed, which comprise positive and negative membrane-based or membrane-forming charge carriers as well as the use of these liposomes.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: December 28, 2010
    Assignee: Novosom AG
    Inventors: Steffen Panzner, Stefan Fankhaenel, Frank Essler, Cornelia Panzner, Gerold Endert
  • Amphoteric liposomes
    Patent number: 7780983
    Abstract: Amphoteric liposomes are proposed, which comprise positive and negative membrane-based or membrane-forming charge carriers as well as the use of these liposomes.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: August 24, 2010
    Assignee: Novosom AG
    Inventors: Steffen Panzner, Stefan Fankhänel, Frank Essler, Cornelia Panzner, Gerold Endert
  • Nanocapsules having a polyelectrolyte envelope
    Patent number: 7763275
    Abstract: A method for the production of nano- or microcapsules having a diameter of from 20 nm to 40 ?m is suggested, wherein template particles are supplied in an aqueous medium, electrically recharged with a polyelectrolyte, re-recharged without separation or washing steps using a second polyelectrolyte having a complementary charge with respect to the first polyelectrolyte, and said process is optionally continued with alternately charged polyelectrolytes.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: July 27, 2010
    Assignee: Novosom AG
    Inventors: Steffen Panzner, Gerold Endert, Frank Essler, Anja Behrens, Silke Lutz, Cornelia Panzner
  • Amphoteric liposomes and their use
    Patent number: 7371404
    Abstract: Amphoteric liposomes are proposed, which comprise positive and negative membrane-based or membrane-forming charge carriers as well as the use of these liposomes.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: May 13, 2008
    Assignee: Novosom AG
    Inventors: Steffen Panzner, Stefan Fankhänel, Frank Essler, Cornelia Panzner
  • AMPHOTERIC LIPOSOMES AND THEIR USE
    Publication number: 20080031937
    Abstract: Amphoteric liposomes are proposed, which comprise positive and negative membrane-based or membrane-forming charge carriers as well as the use of these liposomes.
    Type: Application
    Filed: May 7, 2007
    Publication date: February 7, 2008
    Inventors: Steffen Panzner, Stefan Fankhaenel, Frank Essler, Cornelia Panzner, Gerold Endert
  • Amphoteric liposomes
    Publication number: 20070269504
    Abstract: Amphoteric liposomes are proposed, which comprise positive and negative membrane-based or membrane-forming charge carriers as well as the use of these liposomes.
    Type: Application
    Filed: October 31, 2006
    Publication date: November 22, 2007
    Inventors: Steffen Panzner, Stefan Fankhanel, Frank Essler, Cornelia Panzner
  • Amphoteric liposomes
    Publication number: 20070252295
    Abstract: Amphoteric liposomes are proposed, which comprise positive and negative membrane-based or membrane-forming charge carriers as well as the use of these liposomes.
    Type: Application
    Filed: October 31, 2006
    Publication date: November 1, 2007
    Inventors: Steffen Panzner, Stefan Fankhanel, Frank Essler, Cornelia Panzner
  • Ph-sensitive cationic lipids, and liposomes and nanocapsules containing the same
    Publication number: 20060002991
    Abstract: The invention suggests a pH-sensitive cationic lipid with a pKa value between 3.5 and 8, according to the general formula cation-spacer-Y-spacer-X-lipid, wherein Y and X represent linking groups. Furthermore, liposomes are described, which liposomes include said optionally cationic lipids.
    Type: Application
    Filed: February 19, 2003
    Publication date: January 5, 2006
    Inventors: Frank Essler, Steffen Panzner, Gerold Endert
  • Components for producing amphoteric liposomes
    Publication number: 20050164963
    Abstract: The invention suggests amphoteric lipids wherein one or more amphoteric groups having an isoelectric point between 4 and 9 are substituted on a membranous or membrane-forming amphiphilic substance, as well as liposomes containing such compounds.
    Type: Application
    Filed: February 19, 2003
    Publication date: July 28, 2005
    Inventors: Frank Essler, Steffen Panzner, Gerold Endert
  • Nanocapsules having a polyelectrolyte envelope
    Publication number: 20030157181
    Abstract: A method for the production of nano- or microcapsules having a diameter of from 20 nm to 40 &mgr;m is suggested, wherein template particles are supplied in an aqueous medium, electrically recharged with a polyelectrolyte, re-recharged without separation or washing steps using a second polyelectrolyte having a complementary charge with respect to the first polyelectrolyte, and said process is optionally continued with alternately charged polyelectrolytes.
    Type: Application
    Filed: September 3, 2002
    Publication date: August 21, 2003
    Inventors: Steffen Panzner, Gerold Endert, Frank Essler, Anja Behrens, Silke Lutz, Cornelia Panzner
  • Amphoteric liposomes and their use
    Publication number: 20030099697
    Abstract: Amphoteric liposomes are proposed, which comprise positive and negative membrane-based or membrane-forming charge carriers as well as the use of these liposomes.
    Type: Application
    Filed: February 21, 2002
    Publication date: May 29, 2003
    Applicant: novosom AG
    Inventors: Steffen Panzner, Stefan Fankhanel, Frank Essler, Cornelia Panzner