Patents by Inventor Norbert Zander

Norbert Zander 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: 8685636
    Abstract: The invention is in the field of coagulation diagnostics and relates to a heparin-insensitive method for determining direct coagulation factor inhibitors in a sample, in particular direct thrombin and factor Xa inhibitors.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: April 1, 2014
    Assignee: Siemens Healthcare Diagnostics Products GmbH
    Inventors: Konrad Braun, Wolfgang Klein, Norbert Zander, Michael Timme
  • Publication number: 20140088298
    Abstract: The present invention relates to a hydroxyalkyl starch conjugate and a method for preparing the same, said hydroxy-yalkyl starch conjugate comprising a hydroxyalkyl starch derivative and a cytotoxic agent, the cytotoxic agent comprising at least one secondary hydroxyl group, wherein the hydroxyalkyl starch is linked via said secondary hydroxyl group to the cytotoxic agent. The conjugate according to the present invention has a structure according to the following formula HAS?(-L-M)n wherein M is a residue of the cytotoxic agent, L is a linking moiety, HAS? is the residue of the hydroxyalkyl starch derivative, and n is greater than or equal to 1, and wherein the hydroxyalkyl starch derivative has a mean molecular weight (MW) above the renal threshold.
    Type: Application
    Filed: July 11, 2011
    Publication date: March 27, 2014
    Applicant: Fresenius Kabi Deutschland GmbH
    Inventors: Helmut Knoller, Dominik Heckmann, Frank Hacket, Norbert Zander, Frank Nocken, Saswata Lahiri, Nitin Gupta, Sunil Sanghani, Azim Abul, Hemant Kumar Singh, Sandeep Grewal, Sandeep Kaur
  • Publication number: 20140073778
    Abstract: The present invention relates to hydroxyalkyl starch conjugates, a method for preparing the same, the hydroxyalkyl starch conjugate comprising a hydroxyalkyl starch derivative and a cytotoxic agent and the cytotoxic agent comprising at least one tertiary hydroxyl group, wherein the hydroxyalkyl starch is linked via said tertiary hydroxyl group to the cytotoxic agent. The conjugates according to the present invention have a structure according to the following formula HAS?(-L-M)n wherein M is a residue of the cytotoxic agent, L is a linking moiety, HAS? is the residue of the hydroxyalkyl starch derivative, and n is greater than or equal to 1, and wherein the hydroxyalkyl starch derivative has a mean molecular weight (MW) above the renal threshold.
    Type: Application
    Filed: July 11, 2011
    Publication date: March 13, 2014
    Applicant: Fresenius Kabi Deutschland GmbH
    Inventors: Helmut Knoller, Dominik Heckmann, Frank Hacket, Norbert Zander, Frank Nocken
  • Publication number: 20140073779
    Abstract: The present invention relates to a hydroxyalkyl starch conjugate and a method for preparing the same, said hydroxyalkyl starch conjugate comprising a hydroxyalkyl starch derivative and a cytotoxic agent, the cytotoxic agent comprising at least one secondary hydroxyl group, wherein the hydroxyalkyl starch is linked via said secondary hydroxyl group to the cytotoxic agent. The conjugate according to the present invention has a structure according to the following formula HAS?(-L-M)n wherein M is a residue of the cytotoxic agent, L is a linking moiety, HAS? is the residue of the hydroxyalkyl starch derivative, and n is greater than or equal to 1, and wherein the hydroxyalkyl starch derivative has a mean molecular weight (MW) above the renal threshold.
    Type: Application
    Filed: July 11, 2011
    Publication date: March 13, 2014
    Applicant: Fresenius Kabi Deutschland GmbH
    Inventors: Helmut Knoller, Dominik Heckmann, Frank Hacket, Norbert Zander, Frank Nocken, Saswata Lahiri, Nitin Gupta, Sunil Sanghani, Azim Abul, Hemant Kumar Singh, Sandeep Grewal, Sandeep Kaur
  • Patent number: 8618266
    Abstract: The present invention relates to hydroxyalkylstarch (HAS)-polypeptide-conjugate (HAS-polypeptide) comprising one or more HAS molecules, wherein each HAS is conjugated to the polypeptide via a carbohydrate moiety or a thioether as well as to methods for the production thereof. In a preferred embodiment, the polypeptide is erythropoietin (EPO).
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: December 31, 2013
    Assignee: Fresenius Kabi Deutschland GmbH
    Inventors: Harald S. Conradt, Eckart Grabenhorst, Manfred Nimtz, Norbert Zander, Ronald Frank, Wolfram Eichner
  • Publication number: 20130217871
    Abstract: The present invention relates to hydroxyalkyl starch conjugates and a method for preparing the same, the hydroxyalkyl starch conjugate comprising a hydroxyalkyl starch derivative and a cytotoxic agent, the cytotoxic agent comprising at least one primary hydroxyl group, wherein the hydroxyalkyl starch is linked via said primary hydroxyl group to the cytotoxic agent. The conjugates according to the present invention have a structure according to the following formula HAS?(-L-M)n wherein M is a residue of the cytotoxic agent, L is a linking moiety, HAS? is the residue of the hydroxyalkyl starch derivative, and n is greater than or equal to 1, and wherein the hydroxyalkyl starch derivative has a mean molecular weight (MW) above the renal threshold and a molar substitution (MS) in the range of from 0.6 to 1.5.
    Type: Application
    Filed: July 11, 2011
    Publication date: August 22, 2013
    Inventors: Helmut Knoller, Dominik Heckmann, Frank Hacket, Norbert Zander, Saswata Lahiri, Nitin Gupta, Vivek Kumar, Mukesh Madan Mudgal
  • Publication number: 20130211060
    Abstract: The present invention relates to a hydroxyalkyl starch conjugate and a method for preparing the same, said hydroxy-yalkyl starch conjugate comprising a hydroxyalkyl starch derivative and a cytotoxic agent, the cytotoxic agent comprising at least one secondary hydroxyl group, wherein the hydroxyalkyl starch is linked via said secondary hydroxyl group to the cytotoxic agent. The conjugate according to the present invention has a structure according to the following formula HAS?(-L-M)n wherein M is a residue of the cytotoxic agent, L is a linking moiety, HAS? is the residue of the hydroxyalkyl starch derivative, and n is greater than or equal to 1, and wherein the hydroxyalkyl starch derivative has a mean molecular weight (MW) above the renal threshold.
    Type: Application
    Filed: July 11, 2011
    Publication date: August 15, 2013
    Applicant: Fresenius Kabi Deutschland GmbH
    Inventors: Helmut Knoller, Dominik Heckmann, Frank Hacker, Norbert Zander, Frank Nocken, Saswata Lahiri, Nitin Gupta, Sunil Sanghani, Azim Abul, Hemant Kumar Singh, Sandeep Grewal, Sandeep Kaur
  • Publication number: 20130184455
    Abstract: The present invention relates to a hydroxyalkyl starch conjugate and a method for preparing the same, said hydroxyalkyl starch conjugate comprising a hydroxyalkyl starch derivative and a cytotoxic agent, the cytotoxic agent comprising at least one secondary hydroxyl group, wherein the hydroxyalkyl starch is linked via said secondary hydroxyl group to the cytotoxic agent. The conjugate according to the present invention has a structure according to the following formula HAS?(-L-M)n wherein M is a residue of the cytotoxic agent, L is a linking moiety, HAS? is the residue of the hydroxyalkyl starch derivative, and n is greater than or equal to 1, and wherein the hydroxyalkyl starch derivative has a mean molecular weight (MW) above the renal threshold.
    Type: Application
    Filed: July 11, 2011
    Publication date: July 18, 2013
    Applicant: Fresenius Kabi Deutschland GmbH
    Inventors: Helmut Knoller, Dominik Heckmann, Frank Hacket, Norbert Zander, Frank Nocken, Saswata Lahiri, Nitin Gupta, Sunil Sanghani, Azim Abul, Hemant Kumar Singh, Sandeep Grewal, Sandeep Kaur
  • Publication number: 20130184454
    Abstract: The present invention relates to hydroxyalkyl starch conjugates, a method for preparing the same, the hydroxyalkyl starch conjugate comprising a hydroxyalkyl starch derivative and a cytotoxic agent and the cytotoxic agent comprising at least one tertiary hydroxyl group, wherein the hydroxyalkyl starch is linked via said tertiary hydroxyl group to the cytotoxic agent. The conjugates according to the present invention have a structure according to the following formula HAS?(-L-M)n wherein M is a residue of the cytotoxic agent, L is a linking moiety, HAS? is the residue of the hydroxyalkyl starch derivative, and n is greater than or equal to 1, and wherein the hydroxyalkyl starch derivative has a mean molecular weight (MW) above the renal threshold.
    Type: Application
    Filed: July 11, 2011
    Publication date: July 18, 2013
    Applicant: Fresenius Kabi Deutschland GmbH
    Inventors: Helmut Knoller, Dominik Heckmann, Frank Hacket, Norbert Zander, Frank Nocken
  • Publication number: 20130178437
    Abstract: The present invention relates to hydroxyalkyl starch (HAS) conjugates and to a method for preparing the hydroxyalkyl starch (HAS) conjugates, the hydroxyalkyl starch (HAS) conjugates comprising a hydroxyalkyl starch derivative and a cytotoxic agent, said conjugate having a structure according the following formula HAS?(-M)n wherein M is a residue of a cytotoxic agent, the cytotoxic agent comprising a carbonyl group, HAS? is a residue of the hydroxyalkyl starch derivative comprising at least one functional group X, n is greater than or equal to 1, and wherein the cytotoxic agent is linked via the carbonyl function present in the cytotoxic agent to the functional group X comprised in the hydroxyalkyl starch derivative, wherein the linkage via the carbonyl function is a cleavable linkage, which is capable of being cleaved in vivo so as to release the cytotoxic agent.
    Type: Application
    Filed: July 11, 2011
    Publication date: July 11, 2013
    Applicant: FRESENIUS KABI DEUTSCHLAND GMBH
    Inventors: Helmut Knoller, Dominik Heckmann, Frank Hacket, Norbert Zander
  • Patent number: 8475765
    Abstract: The present invention relates to a method of producing a hydroxyalkyl starch derivative comprising reacting hydroxyalkyl starch of formula (I) at its reducing end which is not oxidized prior to said reaction, with a compound of formula (II) R?NH—R? (II) wherein R1-R2 and R3 are independently hydrogen or a linear or branched hydroxyalkyl group, and wherein either R? or R? or R? and R? comprise at least one functional group X capable of being reacted with at least one other compound prior to or after the reaction of (I) and (II), as well as to the hydroxyalkyl starch derivative as such, obtainable by said method, and to a pharmaceutical composition comprising said hydroxyalkyl starch derivative.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: July 2, 2013
    Assignee: Fresenius Kabi Deutschland GmbH
    Inventors: Norbert Zander, Harald Conradt, Wolfram Eichner
  • Patent number: 8304205
    Abstract: The invention relates to methods for determining the activity of a proteolytic coagulation factor of the blood coagulation cascade in a body fluid such as whole blood or plasma. A combination is provided in a reaction mixture. The combination comprises the sample and an activation agent for activating a proteolytic coagulation factor of the blood coagulation cascade or for activating the blood coagulation cascade. The effect of the activating on a reagent system comprising a cleavable moiety is evaluated. The cleavable moiety is or becomes bound to a chemiluminescent agent or a sensitizer agent or both. The chemiluminescent agent and the sensitizer agent are related in that, when in close proximity, energization of the sensitizer agent results in energization of the chemiluminescent agent. The effect of the activating is related to the activity of a proteolytic coagulation factor of the blood coagulation cascade wherein the effect is the extent of cleavage of the cleavable moiety.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: November 6, 2012
    Assignee: Siemens Healthcare Diagnostics Products GmbH
    Inventors: Andreas Kappel, Andrea Lichte, Norbert Zander, Stefan Teigelkamp, Sabine Teigelkamp, legal representative, Carsten Schelp
  • Patent number: 8287850
    Abstract: Conjugates of hydroxyalkyl starch and a protein are provided. The conjugates are formed by a reductive amination reaction between at least one aldehyde group or keto group or hemiacetal group of the hydroxyalkyl starch or of a derivative of the hydroxyalkyl starch, and at least one amino group of the protein, so that the hydroxyalkyl starch or the derivative thereof is covalently linked to the protein via an azomethine linkage or a amino linkage. Methods of producing these conjugates and specific uses of the conjugates also are provided.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: October 16, 2012
    Assignee: Fresenius Kabi Deutschland GmbH
    Inventors: Wolfram Eichner, Michele Orlando, Norbert Zander, Harald S. Conradt, Frank Hacket, Klaus Langer, Ronald Frank
  • Publication number: 20120252044
    Abstract: The present invention is in the field of coagulation diagnostics and relates to a kit and method for preparing controls for use in test methods for determining thrombocyte function.
    Type: Application
    Filed: March 29, 2012
    Publication date: October 4, 2012
    Applicant: SIEMENS HEALTHCARE DIAGNOSTICS PRODUCTS GMBH
    Inventors: Andreas Rechner, Norbert Zander
  • Publication number: 20120237960
    Abstract: The invention lies in the field of platelet function diagnostics and relates to devices and methods for determining the platelet function in a centrifugal analyzer.
    Type: Application
    Filed: March 15, 2012
    Publication date: September 20, 2012
    Applicant: SIEMENS HEALTHCARE DIAGNOSTICS PRODUCTS GMBH
    Inventors: Joerg Endermann, Andreas Rechner, Norbert Zander
  • Publication number: 20120202232
    Abstract: The invention is in the field of coagulation diagnostics and relates to a heparin-insensitive method for determining direct coagulation factor inhibitors in a sample, in particular direct thrombin and factor Xa inhibitors.
    Type: Application
    Filed: February 6, 2012
    Publication date: August 9, 2012
    Applicant: SIEMENS HEALTHCARE DIAGNOSTICS PRODUCTS GMBH
    Inventors: Konrad Braun, Wolfgang KLEIN, Norbert Zander, Michael Timme
  • Publication number: 20120190053
    Abstract: The present invention is in the field of in-vitro diagnostics and relates to a method of determining the blood-clotting factor XIII (factor XIII, F XIII) with the aid of plasma-based reference material, and a test kit for carrying out the method.
    Type: Application
    Filed: June 17, 2010
    Publication date: July 26, 2012
    Applicant: SIEMENS HEALTHCARE DIAGNOSTICS PRODUCTS GMBH
    Inventors: Gerlinde Christ, Andreas Kappel, Lena Pechmann, Frank Vitzhum, Norbert Zander
  • Publication number: 20120156708
    Abstract: The present invention relates to a chromogenic method for simultaneously determining the activity of multiple coagulation proteases or for simultaneously determining the inhibition of multiple coagulation proteases in a single test reaction. For this purpose, use is made of two chromogenic substrates which have different absorption maxima and whose color signals can be separated spectrally.
    Type: Application
    Filed: December 15, 2011
    Publication date: June 21, 2012
    Applicant: SIEMENS HEALTHCARE DIAGNOSTICS PRODUCTS GMBH
    Inventor: Norbert ZANDER
  • Publication number: 20120046240
    Abstract: The present invention relates to methods of producing hydroxyalkyl starch (HAS) derivatives having a structure according to formula (I) comprising reacting HAS of formula (I) at its optionally oxidized reducing end or a HAS derivative, obtainable by reacting HAS of formula (I) at its optionally oxidized reducing end with a compound (D) comprising at least one functional group Z1 capable of being reacted with the optionally oxidized reducing end of the HAS and at least one functional group W, with a compound (L) comprising at least one functional group Z1 capable of being reacted with said HAS, or at least one functional group Z2 capable of being reacted with functional group W comprised in said HAS derivative, and at least one functional group X capable of being reacted with a functional group Y of a further compound. The present invention further relates to HAS derivatives and pharmaceutical compositions comprising them.
    Type: Application
    Filed: June 28, 2010
    Publication date: February 23, 2012
    Inventors: Norbert Zander, Harald Conradt, Wolfram Eichner
  • Patent number: 8071723
    Abstract: The invention is in the field of coagulation diagnosis and relates to a liquid, buffer-based D-dimer composition, which additionally contains fibrinogen and which is suitable as a standard material for control or calibration purposes for D-dimer test procedures.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: December 6, 2011
    Assignee: Siemens Healthcare Diagnostics Products GmbH
    Inventors: Sabine Pilgrim, Norbert Zander