Patents by Inventor Felix Kratz

Felix Kratz 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).

  • Publication number: 20100041615
    Abstract: The invention relates to methotrexate derivatives which contain a protein-binding group and can be enzymatically cleaved in the body such that the active substance or a low-molecular active substance derivative is released. Also disclosed is a method for producing methotrexate derivatives, the use thereof, and medicaments comprising methotrexate derivative.
    Type: Application
    Filed: July 25, 2007
    Publication date: February 18, 2010
    Inventors: Felix Kratz, Andre Warnecke
  • Patent number: 7445764
    Abstract: The invention relates to a carrier-drug conjugate comprising a carrier containing a polypeptide sequence having one or several cysteine radicals and a pharmacon containing a pharmaceutical and/or diagnostic active substance, a spacer molecule and a thiol binding group, whereby over 0.7 mol pharmacon per mol of cysteine radical is bound to the carrier by the thiol binding group. The invention also relates to a method for the production of said conjugate and to medicaments and diagnostic kits containing said conjugate.
    Type: Grant
    Filed: June 7, 2000
    Date of Patent: November 4, 2008
    Assignee: KTB Tumorforschungsgesellsschaft mbH
    Inventor: Felix Kratz
  • Publication number: 20080161245
    Abstract: The invention pertains to low-molecular anthracycline-peptide derivatives with PSA-cleavable peptide sequences, which contain a protein-binding group.
    Type: Application
    Filed: February 22, 2006
    Publication date: July 3, 2008
    Applicant: KTB Tumorforschungsgesellschaft mbH
    Inventors: Felix Kratz, Da-Eun Chung
  • Patent number: 7387771
    Abstract: The invention relates to a method for producing injectable medicament preparations containing a therapeutically and/or diagnostically effective substance which is comprised of an active agent, of a spacer molecule and of at least one protein-binding molecule. After being brought into contact with the body, said therapeutically and/or diagnostically effective substance covalently bonds to the body fluid constituents or tissue constituents via the protein-binding molecules, thus providing a form of transport of the active agent that can be hydrolytically or enzymatically cleaved, according to pH, in the body while releasing the active agent.
    Type: Grant
    Filed: June 7, 2000
    Date of Patent: June 17, 2008
    Assignee: KTB Tumorforschungs GmbH
    Inventor: Felix Kratz
  • Patent number: 7141691
    Abstract: The invention concerns low-molecular platinum complexes containing cyclobutane-1,1-dicarboxylate ligands that contain a protein-binding group.
    Type: Grant
    Filed: March 18, 2004
    Date of Patent: November 28, 2006
    Assignee: KTB Tumorforschungs GmbH
    Inventors: Felix Kratz, André Warnecke
  • Publication number: 20060233707
    Abstract: The invention relates to a method for producing injectable medicament preparations containing a therapeutically and/or diagnostically effective substance which is comprised of an active agent, of a spacer molecule and of at least one protein-binding molecule. After being brought into contact with the body, said therapeutically and/or diagnostically effective substance covalently bonds to the body fluid constituents or tissue constituents via the protein-binding molecule, thus providing a form of transport of the active agent that an be hydrolytically or enzymatically cleaved, according to pH, in the body while releasing the active agent.
    Type: Application
    Filed: March 24, 2006
    Publication date: October 19, 2006
    Inventor: Felix Kratz
  • Publication number: 20060173161
    Abstract: The invention relates to low-molecular doxorubicin peptide derivatives containing MMP-2 or MMP-9 divisible peptide sequences and a protein-binding group.
    Type: Application
    Filed: March 4, 2004
    Publication date: August 3, 2006
    Inventor: Felix Kratz
  • Publication number: 20060089341
    Abstract: The invention concerns low-molecular platinum complexes containing cyclobutane-1,1-dicarboxylate ligands that contain a protein-binding group.
    Type: Application
    Filed: March 18, 2004
    Publication date: April 27, 2006
    Inventors: Felix Kratz, Andre Warnecke
  • Patent number: 6709679
    Abstract: Conjugates of transferrin, albumin and polyethylence glycol consisting of native or thiolated transferrin or albumin or of polyethylene glycol (MW between approximately 5,000 and 20,0000) with at least one HS—, HO— or H2N group and cytostatic compounds derived through maleinimide or N-hydroxysuccinimide ester compounds, such as doxorubicin, daunorubicin, epirubicin, idarubicin, mitoxandrone, chloroambucil, melphalan, 5-fluorouracyl, 5′-desoxy-5-fluorouridine, thioguanine, methotrexate, paclitaxel, docetaxel, topotecan, 9-aminocamptothecin, etoposide, teniposide, mitopodoside, vinblastine, vincristine, vindesine, vinorelbine or a compound of general formula A, B, C or D, where n=0-6, X=—NH2, —OH, —COOH, —O—CO—R—COR*, —NH—CO—R—COR*, where R is an aliphatic carbon chain with 1-6 carbon atoms or a substituted or unsubstituted phenylene group and R*H, phenyl, alkyl with 1-6 carbon atoms.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: March 23, 2004
    Inventor: Felix Kratz
  • Publication number: 20030185793
    Abstract: The invention relates to transport molecule binding ligand compounds which comprise a therapeutically and/or diagnostically active substance and a carrier molecule-affine substance with a high association constant to the carrier molecule. The invention also relates to medicaments containing these ligand compounds and to diagnostic kits.
    Type: Application
    Filed: February 20, 2003
    Publication date: October 2, 2003
    Inventor: Felix Kratz
  • Publication number: 20020019343
    Abstract: Conjugates of transferrin, albumin and polyethylence glycol consisting of native or thiolated transferrin or albumin or of polyethylene glycol (MW between approximately 5,000 and 20,0000) with at least one HS—, HO— or H2N group and cytostatic compounds derived through maleinimide or N-hydroxysuccinimide ester compounds, such as doxorubicin, daunorubicin, epirubicin, idarubicin, mitoxandrone, chloroambucil, melphalan, 5-fluorouracyl, 5′-desoxy-5-fluorouridine, thioguanine, methotrexate, paclitaxel, docetaxel, topotecan, 9-aminocamptothecin, etoposide, teniposide, mitopodoside, vinblastine, vincristine, vindesine, vinorelbine or a compound of general formula A, B, C or D, where n=0-6, X=—NH2, —OH, —COOH, —O—CO—R—COR*, —NH—CO—R—COR*, where R is an aliphatic carbon chain with 1-6 carbon atoms or a substituted or unsubstituted phenylene group and R* H, phenyl, alkyl with 1-6 carbon atoms.
    Type: Application
    Filed: August 20, 2001
    Publication date: February 14, 2002
    Inventor: Felix Kratz
  • Patent number: 6310039
    Abstract: Conjugates of transferrin, albumin and polyethylence glycol consisting of native or thiolated transferrin or albumin or of polyethylene glycol (MW between approximately 5,000 and 20,0000) with at least one HS—, HO— or H2N group and cytostatic compounds derived through maleinimide or N-hydroxysuccinimide ester compounds, such as doxorubicin, daunorubicin, epirubicin, idarubicin, mitoxandrone, chloroambucil, melphalan, 5-fluorouracyl, 5′-desoxy-5-fluorouridine, thioguanine, methotrexate, paclitaxel, docetaxel, topotecan, 9-aminocamptothecin, etoposide, teniposide, mitopodoside, vinblastine, vincristine, vindesine, vinorelbine or a compound of general formula A, B, C or D, where n=0-6, X=—NH2, —OH, —COOH, —O—CO—R—COR*, —NH—CO—R—COR*, where R is an aliphatic carbon chain with 1-6 carbon atoms or a substituted or unsubstituted phenylene group and R* H, phenyl, alkyl with 1-6 carbon atoms.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: October 30, 2001
    Inventor: Felix Kratz