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).
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Patent number: 7745589Abstract: 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: GrantFiled: July 21, 2006Date of Patent: June 29, 2010Assignee: University of Kentucky Research FoundationInventors: Hans Peter Spielmann, Douglas A. Andres
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Patent number: 6686480Abstract: 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: GrantFiled: June 3, 2002Date of Patent: February 3, 2004Assignee: Cerus CorporationInventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
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Publication number: 20030185804Abstract: 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: ApplicationFiled: August 6, 2002Publication date: October 2, 2003Applicant: Cerus CorporationInventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
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Publication number: 20030105339Abstract: 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: ApplicationFiled: June 3, 2002Publication date: June 5, 2003Applicant: Cerus CorporationInventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
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Patent number: 6503699Abstract: 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: GrantFiled: August 16, 1999Date of Patent: January 7, 2003Assignee: Cerus CorporationInventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
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Patent number: 6469052Abstract: 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: GrantFiled: January 22, 2001Date of Patent: October 22, 2002Assignee: Cerus CorporationInventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
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Patent number: 6420570Abstract: 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: GrantFiled: January 22, 2001Date of Patent: July 16, 2002Assignee: Cerus CorporationInventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
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Publication number: 20020006393Abstract: 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: ApplicationFiled: January 22, 2001Publication date: January 17, 2002Inventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
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Patent number: 6284910Abstract: 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: GrantFiled: December 15, 1999Date of Patent: September 4, 2001Assignee: University of Kentucky Research FoundationInventors: Hans Peter Spielmann, Douglas A. Andres, Kareem A. H. Chehade
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Patent number: 6252096Abstract: 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: GrantFiled: March 14, 2000Date of Patent: June 26, 2001Assignee: University of Kentucky Research FoundationInventors: Hans Peter Spielmann, Kareem Abdel Hassan Chehade
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Patent number: 6218100Abstract: 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: GrantFiled: July 24, 1997Date of Patent: April 17, 2001Assignee: Cerus CorporationInventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
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Patent number: 6194139Abstract: 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: GrantFiled: September 28, 1999Date of Patent: February 27, 2001Assignee: Cerus CorporationInventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann, Aileen Nerio
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Patent number: 6017691Abstract: 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: GrantFiled: February 9, 1996Date of Patent: January 25, 2000Assignee: Cerus CorporationInventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann, Aileen Nerio
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Patent number: 6004741Abstract: 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: GrantFiled: October 23, 1997Date of Patent: December 21, 1999Assignee: Cerus CorporationInventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann, Aileen Nerio
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Patent number: 6004742Abstract: 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: GrantFiled: November 3, 1997Date of Patent: December 21, 1999Assignee: Cerus CorporationInventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
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Patent number: 5972593Abstract: 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: GrantFiled: March 30, 1998Date of Patent: October 26, 1999Assignee: Cerus CorporationInventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann
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Patent number: 5871900Abstract: 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: GrantFiled: November 7, 1997Date of Patent: February 16, 1999Assignee: Cerus CorporationInventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann, Aileen Nerio
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Patent number: 5712085Abstract: 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: GrantFiled: June 5, 1995Date of Patent: January 27, 1998Assignee: Cerus CorporationInventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann, Aileen Nerio
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Patent number: 5654443Abstract: 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: GrantFiled: May 31, 1995Date of Patent: August 5, 1997Assignee: Cerus CorporationInventors: Susan Wollowitz, Stephen T. Isaacs, Henry Rapoport, Hans Peter Spielmann