Patents by Inventor Hans Peter Spielmann

Hans Peter Spielmann 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: 7745589
    Abstract: Unnatural substrates of prenylation enzymens and antibodies that recognize unique moieties of prenylated proteins, which unique moieties are transferred from the unnatural substrates are used for detecting and isolating prenylated proteins, and for screening for inhibitors of prenylation enzymes.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: June 29, 2010
    Assignee: University of Kentucky Research Foundation
    Inventors: Hans Peter Spielmann, Douglas A. Andres
  • Patent number: 6686480
    Abstract: Psoralen compound compositions are synthesized which have substitutions on the 4, 4′, 5′, and 8 positions of the psoralen, which yet permit their binding to nucleic acid of pathogens. Reaction conditions that photoactivate these bound psoralens result in covalent crosslinking to nucleic acid, thereby inactivating the pathogen. Higher psoralen binding levels and lower mutagenicity results in safer, more efficient, and reliable inactivation of pathogens. In addition to the psoralen compositions, the invention contemplates inactivating methods using the new psoralens.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: February 3, 2004
    Assignee: Cerus Corporation
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
  • Publication number: 20030185804
    Abstract: Psoralen compounds are synthesized which have substitutions on the 4, 4′, 5′, and 8 positions of the psoralen, which permit enhanced binding to nucleic acid of pathogens. Higher psoralen binding levels and lower mutagenicity are described, resulting in safer, more efficient, and reliable inactivation of pathogens in blood products. The invention contemplates inactivation methods using the new psoralens which do not compromise the function of blood products for transfusion.
    Type: Application
    Filed: August 6, 2002
    Publication date: October 2, 2003
    Applicant: Cerus Corporation
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
  • Publication number: 20030105339
    Abstract: Psoralen compound compositions are synthesized which have substitutions on the 4, 4′, 5′, and 8 positions of the psoralen, which yet permit their binding to nucleic acid of pathogens. Reaction conditions that photoactivate these bound psoralens result in covalent crosslinking to nucleic acid, thereby inactivating the pathogen. Higher psoralen binding levels and lower mutagenicity results in safer, more efficient, and reliable inactivation of pathogens. In addition to the psoralen compositions, the invention contemplates inactivating methods using the new psoralens.
    Type: Application
    Filed: June 3, 2002
    Publication date: June 5, 2003
    Applicant: Cerus Corporation
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
  • Patent number: 6503699
    Abstract: Psoralen compound compositions are synthesized which have substitutions on the 4, 4′, 5′, and 8 positions of the psoralen, which yet permit their binding to nucleic acid of pathogens. Reaction conditions that photoactivate these bound psoralens result in covalent crosslinking to nucleic acid, thereby inactivating the pathogen. Higher psoralen binding levels and lower mutagenicity results in safer, more efficient, and reliable inactivation of pathogens. In addition to the psoralen compositions, the invention contemplates inactivating methods using the new psoralens.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: January 7, 2003
    Assignee: Cerus Corporation
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
  • Patent number: 6469052
    Abstract: The present invention includes compositions comprising new psoralens with either a 4 ′, or 5 ′primary amino substituent and a blood product that is suitable for in vivo use. The compositions are useful for the inactivation of pathogens in blood products such as platelets and plasma.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: October 22, 2002
    Assignee: Cerus Corporation
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
  • Patent number: 6420570
    Abstract: Psoralen compound compositions are synthesized which have substitutions on the 4, 4′, 5′, and 8 positions of the psoralen, which yet permit their binding to nucleic acid of pathogens. Reaction conditions that photoactivate these bound psoralens result in covalent crosslinking to nucleic acid, thereby inactivating the pathogen. Higher psoralen binding levels and lower mutagenicity results in safer, more efficient, and reliable inactivation of pathogens. In addition to the psoralen compositions, the invention contemplates inactivating methods using the new psoralens.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: July 16, 2002
    Assignee: Cerus Corporation
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
  • Publication number: 20020006393
    Abstract: Psoralen compounds are synthesized which have substitutions on the 4, 4′, 5′, and 8 positions of the psoralen, which permit enhanced binding to nucleic acid of pathogens. Higher psoralen binding levels and lower mutagenicity are described, resulting in safer, more efficient, and reliable inactivation of pathogens in blood products. The invention contemplates inactivation methods using the new psoralens which do not compromise the function of blood products for transfusion.
    Type: Application
    Filed: January 22, 2001
    Publication date: January 17, 2002
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
  • Patent number: 6284910
    Abstract: The post-translational addition of a farnesyl moiety to the Ras oncoprotein is essential for its membrane localization and is required for both its biological activity and ability to induce malignant transformation. The present invention describes design and synthesis of a farnesylpyrophosphate (FPP) analog, 8-anilinogeranyl pyrophosphate (AGPP) that is transferred to Ras by farnesyltransferase (FTase), in which the &ohgr;-terminal isoprene unit of the farnesyl group has been replaced with an aniline functionality. AGPP potently inhibited FTase activity in vitro (IC50=0.6 &mgr;M) and is highly selective showing little inhibitory activity against either geranylgeranyl-protein transferase type I (GGTase I) (IC50=31 &mgr;M) or the utilization of FPP by the enzyme squalene synthase (IC50=1000 &mgr;M). Kinetic analyses suggest that AGPP acts as a competitive inhibitor of FTase with respect to FPP.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: September 4, 2001
    Assignee: University of Kentucky Research Foundation
    Inventors: Hans Peter Spielmann, Douglas A. Andres, Kareem A. H. Chehade
  • Patent number: 6252096
    Abstract: The invention is directed to a novel compounds comprising 4-azidotetrafluoroaniline and the alkyl, acyl and sulfonamide derivatives thereof and to methods of making and using the same. The novel compounds are useful as a photoaffinity probe to study protein structure and function. Two methods for preparing 4-azidotetrafluoroaniline are disclosed, each employing a stable carbamate intermediate from which the 4-azidotetrafluoroaniline is derived.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: June 26, 2001
    Assignee: University of Kentucky Research Foundation
    Inventors: Hans Peter Spielmann, Kareem Abdel Hassan Chehade
  • Patent number: 6218100
    Abstract: Psoralen compounds are synthesized which have substitutions on the 4, 4′, 5′, and 8 positions of the psoralen, which permit enhanced binding to nucleic acid of pathogens. Higher psoralen binding levels and lower mutagenicity are described, resulting in safer, more efficient, and reliable inactivation of pathogens in blood products. The invention contemplates inactivation methods using the new psoralens which do not compromise the function of blood products for transfusion. In particular, use of 5′-primary aminoalkyl psoralens to inactivate pathogens in platelets is disclosed.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: April 17, 2001
    Assignee: Cerus Corporation
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
  • Patent number: 6194139
    Abstract: Psoralen compounds are synthesized which have substitutions on the 4, 4′, 5′, and 8 positions of the psoralen, which permit enhanced binding to nucleic acid of pathogens. Higher psoralen binding levels and lower mutagenicity are described, resulting in safer, more efficient, and reliable inactivation of pathogens in blood products. The invention contemplates inactivation methods using the new psoralens which do not compromise the function of blood products for transfusion.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: February 27, 2001
    Assignee: Cerus Corporation
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann, Aileen Nerio
  • Patent number: 6017691
    Abstract: Psoralen compounds are synthesized which have substitutions on the 4, 4', 5', and 8 positions of the psoralen, which permit enhanced binding to nucleic acid of pathogens. Higher psoralen binding levels and lower mutagenicity are described, resulting in safer, more efficient, and reliable inactivation of pathogens in blood products. The invention contemplates inactivation methods using the new psoralens which do not compromise the function of blood products for transfusion.
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: January 25, 2000
    Assignee: Cerus Corporation
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann, Aileen Nerio
  • Patent number: 6004741
    Abstract: Psoralen compounds are synthesized which have substitutions on the 4, 4', 5', and 8 positions of the psoralen, which permit enhanced binding to nucleic acid of pathogens. Higher psoralen binding levels and lower mutagenicity are described, resulting in safer, more efficient, and reliable inactivation of pathogens in blood products. The invention contemplates inactivation methods using the new psoralens which do not compromise the function of blood products for transfusion. In particular, 4' and 5' primary aminoalkyl psoralens are photoactivated in platelet preparations to inactivate pathogens.
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: December 21, 1999
    Assignee: Cerus Corporation
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann, Aileen Nerio
  • Patent number: 6004742
    Abstract: Psoralen compounds are synthesized which have substitutions on the 4, 4', 5', and 8 positions of the psoralen, which permit enhanced binding to nucleic add of pathogens. Higher psoralen binding levels and lower mutagenicity are described, resulting in safer, more efficient, and reliable inactivation of pathogens in blood products. The invention contemplates inactivation methods using the new psoralens which do not compromise the function of blood products for transfusion. In particular compounds with primary aminoalkyl substitutions on the 4' or 5' positions of psoralen are used to inactivate pathogens in blood products such as platelets.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: December 21, 1999
    Assignee: Cerus Corporation
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
  • Patent number: 5972593
    Abstract: Psoralen compound compositions are synthesized which have substitutions on the 4, 4', 5', and 8 positions of the psoralen, which yet permit their binding to nucleic acid of pathogens. Reaction conditions that photoactivate these bound psoralens result in covalent crosslinking to nucleic acid, thereby inactivating the pathogen. Higher psoralen binding levels and lower mutagenicity results in safer, more efficient, and reliable inactivation of pathogens. In addition to the psoralen compositions, the invention contemplates inactivating methods using the new psoralens.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: October 26, 1999
    Assignee: Cerus Corporation
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
  • Patent number: 5871900
    Abstract: Psoralen compounds are synthesized which have substitutions on the 4, 4', 5', and 8 positions of the psoralen, which permit enhanced binding to nucleic acid of pathogens. Higher psoralen binding levels and lower mutagenicity are described, resulting in safer, more efficient, and reliable inactivation of pathogens in blood products. The invention compemplates inactivation methods using the new psoralens which do not compromise the function of blood products for transfusion. In particular, 5'-primary amino psoralens are photoactivated in order to inactivate pathogens in biological fluids.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: February 16, 1999
    Assignee: Cerus Corporation
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann, Aileen Nerio
  • Patent number: 5712085
    Abstract: Psoralen compounds are synthesized which have substitutions on the 4,4',5', and 8 positions of the psoralen, which permit enhanced binding to nucleic acid of pathogens. Higher psoralen binding levels and lower mutagenicity are described, resulting in safer, more efficient, and reliable inactivation of pathogens in blood products. The invention contemplates inactivation methods using the new psoralens which do not compromise the function of blood products for transfusion. Also disclosed are compositions comprising 4' or 5'-primary amino substituted psoralens in a synthetic media.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: January 27, 1998
    Assignee: Cerus Corporation
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann, Aileen Nerio
  • Patent number: 5654443
    Abstract: Psoralen compound compositions are synthesized which have substitutions on the 4, 4', 5', and 8 positions of the psoralen, which yet permit their binding to nucleic acid of pathogens. Reaction conditions that photoactivate these bound psoralens result in covalent crosslinking to nucleic acid, thereby inactivating the pathogen. Higher psoralen binding levels and lower mutagenicity results in safer, more efficient, and reliable inactivation of pathogens. In addition to the psoralen compositions, the invention contemplates inactivating methods using the new psoralens.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: August 5, 1997
    Assignee: Cerus Corporation
    Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann