3D Biosurfaces of Tucson, Ariz., has received US Patent No. 7,195,872, "High surface area substrates for microarrays and methods to make same." The patent describes a microarray device that includes: a) a substrate with a textured surface that contains microfeatures; and b) a plurality of separate array elements immobilized on two adjacent microfeatures to form a textured array element. The increased surface area of the constructed array is capable of producing an improved uniformity of signal intensity, the patent states.
RiNA, Affymetrix, Samsung Electronics, SurModics, 3D Biosurfaces
RiNA of Berlin has received European Patent No. 1763589, "Blueprint biochips." The patent claims a method for producing a surface with one or more products attached by: a) putting a first and second surface in top of each other, where enzymes are attached to distinct sites on the first surface; b) contacting the enzymes with more enzymes enabling generation of more products by the enzymes; and c) attaching the subsequent products to distinct sites in the second surface. According to the patent's abstract, the first surface is a DNA chip or a protein chip.
Affymetrix has received US Patent No. 7,197,400, "System and computer software products for comparative gene expression analysis." The patent claims methods and computer software products for analyzing gene expression data. Methods, systems and computer software are also provided for comparative gene expression analysis using intensity dependent normalization factors as well as for comparing gene expression experiment results using two or more nucleic acid probe arrays.
Samsung Electronics has received US Patent No. 7,195,924, "Method for immobilizing a biomolecule on a solid substrate at a high density by using the substrate having an activated carboxyl group on a surface thereof and microarray produced using the method."The patent claims a method for immobilizing a biomolecule on a solid substrate. The method includes coating the solid substrate with silane anhydride to introduce an anhydride functional group onto a surface of the solid substrate; obtaining a carboxyl group from the anhydride functional group by hydrolysis; reacting the carboxyl group with carbodiimide and succinimide to activate the carboxyl group; and contacting the biomolecule with the solid substrate having the activated carboxyl group on its surface to immobilize the biomolecule on the solid substrate. A microarray is subsequently produced using the claimed method.
SurModics of Eden Prairie, Minn., has received US Patent No. 7,195,913, "Randomly ordered arrays and methods of making and using." The patent claims a method of detecting a target in a sample using an array of probes. The target can be detecting using an array that includes a substrate and a plurality of microparticles which are coupled to probes and randomly immobilized on the substrate. Each microparticle includes a probe and a self-encoding marker which forms a unique self-encoding marker-probe pair on the microparticle, according to the patent. Detection of the target in a sample is accomplished by applying a sample suspected of containing the target to the array, allowing the target to bind to the probes coupled to the microparticles, and then detecting a target marker coupled to the target and detecting the self encoding markers of microparticles having unique self-encoding marker-probe pairs. Although the microparticles are randomly located on at least a portion of the array, the presence and identity of the target can be determined by the self-encoding marker-probe pairs.