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Lee Josephson, Reading US

Lee Josephson, Reading, MA US

Patent application numberDescriptionPublished
20080305048Self-Assembling Nanoparticle Conjugates - This invention relates to magnetic nanoparticle conjugates and related compositions and methods of use.12-11-2008
20090029392MAGNETIC-NANOPARTICLE CONJUGATES AND METHODS OF USE - The present invention provides novel compositions of binding moiety-nanoparticle conjugates, aggregates of these conjugates, and novel methods of using these conjugates, and aggregates. The nanoparticles in these conjugates can be magnetic metal oxides, either monodisperse or polydisperse. Binding moieties can be, e.g., oligonucleotides, polypeptides, or polysaccharides. Oligonucleotide sequences are linked to either non-polymer surface functionalized metal oxides or with functionalized polymers associated with the metal oxides. The novel compositions can be used in assays for detecting target molecules, such as nucleic acids and proteins, in vitro or as magnetic resonance (MR) contrast agents to detect target molecules in living organisms.01-29-2009
20090068115Amine Functionalized Superparamagnetic Nanoparticles for the Synthesis of Bioconjugates and Uses Therefor - Amine functionalized magnetic nanoparticle compositions and processes for synthesizing the same are described. The process consists of obtaining a carboxylated polymer in substantially pure form, which is used to prepare a substantially size homogeneous, polymer coated carboxyl, functionalized magnetic nanoparticle. The carboxyl groups are converted to reactive primary amino groups by the use of a water-soluble carbodiimide followed by reaction of a large excess of a diamine. The amine-terminated nanoparticles are then reacted with bifunctional crosslinking agents and with various biomolecules to make nanoparticles for in vitro assays, cell sorting applications and target specific MR contrast agents.03-12-2009
20090324489Wortmannin conjugates and uses thereof - The invention features conjugates of wortmannin, and wortmannin derivatives, and their use as inhibitors of PI3-kinase activity in treating cancer, inflammatory diseases, and 12-31-2009
20100120174WATER RELAXATION-BASED SENSORS - This invention relates to magnetic resonance-based sensors and related methods.05-13-2010
20110046004Magnetic-nanoparticle conjugates and methods of use - The present invention provides novel compositions of binding moiety-nanoparticle conjugates, aggregates of these conjugates, and novel methods of using these conjugates, and aggregates. The nanoparticles in these conjugates can be magnetic metal oxides, either monodisperse or polydisperse. Binding moieties can be, e.g., oligonucleotides, polypeptides, or polysaccharides. Oligonucleotide sequences are linked to either non-polymer surface functionalized metal oxides or with functionalized polymers associated with the metal oxides. The novel compositions can be used in assays for detecting target molecules, such as nucleic acids and proteins, in vitro or as magnetic resonance (MR) contrast agents to detect target molecules in living organisms.02-24-2011
20110053174Magnetic-nanoparticle conjugates and methods of use - The present invention provides novel compositions of binding moiety-nanoparticle conjugates, aggregates of these conjugates, and novel methods of using these conjugates, and aggregates. The nanoparticles in these conjugates can be magnetic metal oxides, either monodisperse or polydisperse. Binding moieties can be, e.g., oligonucleotides, polypeptides, or polysaccharides. Oligonucleotide sequences are linked to either non-polymer surface functionalized metal oxides or with functionalized polymers associated with the metal oxides. The novel compositions can be used in assays for detecting target molecules, such as nucleic acids and proteins, in vitro or as magnetic resonance (MR) contrast agents to detect target molecules in living organisms.03-03-2011
20110070657DETECTING IONS AND MEASURING ION CONCENTRATIONS - The present inventions include methods and compositions for detecting the presence of ions and measuring the level or concentration of ions in a sample by nuclear magnetic resonance (NMR) using magnetic particles. In particular, the inventions include the preparation and use of magnetic particles having synthetic ion chelators covalently bound to their surfaces. In the presence of target ions, the surface-modified magnetic particles form clusters, which can be monitored by NMR relaxation measurements. The relaxation times can then be used to detect specific ions and determine their concentration. The described methods, compositions, and devices are useful for a variety of applications including biomedical applications in diagnostics and imaging.03-24-2011
20110124744Magnetic Resonance-Based Viscometers and Methods - This invention relates generally to magnetic resonance (MR)-based methods and kits for measuring the viscosity of liquid samples.05-26-2011
20110159566Methods and Reagents for Preparing Multifunctional Probes - Multifunctional probes are synthesized in a single step using peptide scaffold-based multifunctional single-attachment-point reagents. To obtain multifunctional probes using the methods of the invention, a substrate (e.g., a nanoparticle, polymer, antibody, protein, low molecular weight compound, drug, etc.) is reacted with a multifunctional single-attachment-point (MSAP) reagent. The MSAP reagents can include three components: (i) a peptide scaffold, (ii) a single chemically reactive group on the peptide scaffold for reaction of the MSAP with a substrate having a complementary reactive group, and (iii) multiple functional groups on the peptide scaffold. The peptide scaffold can include any number of residues; however, for ease of synthesis and reproducibility in clinical trials, it is preferred to limit the residues in the peptide to 20 or less. The reagent can be prepared to yield a predetermined stoichiometric ratio of the functional groups on the scaffold such that the probe has a fixed stoichiometric ratio of the functional groups.06-30-2011

Patent applications by Lee Josephson, Reading, MA US