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| Number | Title | Issue Date |
| 5814370 | Encapsulation of nanoclusters in dried gel materials via an inverse micelle/sol gel synthesis A dried gel material sterically entrapping nanoclusters of a catalytically active material and a process to make the material via an inverse micelle/sol-gel synthesis. A surfactant is mixed with an apolar solvent to form an inverse micelle solution. A sal... | 09/29/1998 |
| 5798439 | Composite insulating coatings for powders, especially for magnetic applications A method for producing composite insulating coatings on powder particles, the coatings containing an electrically insulating metal compound and an organic polymer. The coatings are deposited preferably by controlled spraying, simultaneous or sequential, o... | 08/25/1998 |
| 5776706 | Polymeric particles having a biodegradable gelatin or aminodextran coating and processes for making same Gelatin and aminodextran coated polymer core particles useful in immunoassays and methods of making the same are disclosed. The preparation of aminodextrans having varying amounts of amine groups is also described, as is a method of crosslinking gelatin a... | 07/07/1998 |
| 5753519 | Liposome-enhanced immunoaggregation assay and test device A test device for detecting or quantifying an analyte in a test sample includes an absorbent material having separate contact and measurement portions. The contact portion is positioned at or proximate to a first end of the absorbent material. The measure... | 05/19/1998 |
| 5672301 | Method for fabricating microparticles in emulsion by modification of the chemical composition of the dispersed phase after emulsification The method for producing microparticles is characterized in that it comprises the following steps: preparation of an emulsion of a solution of a substance or a mixture of substances in a dispersing liquid wherein said substance or said mixture are substan... | 09/30/1997 |
| 5635609 | Particles prepared by transacylation reaction between an esterified polysaccharide and a polyamine, methods of preparation therefor and compositions containing same Particles, preparation methods therefor, and compositions containing same. The particles include at least one esterified polysaccharide and at least one polyamine, as well as at least one gellable polysaccharide when neither the esterified polysaccharide ... | 06/03/1997 |
| 5529914 | Gels for encapsulation of biological materials This invention provides novel methods for the formation of biocompatible membranes around biological materials using photopolymerization of water soluble molecules. The membranes can be used as a covering to encapsulate biological materials or biomedical ... | 06/25/1996 |
| 5318798 | Process for producing kampo medicine hard capsules When a powdered extract of Kampo medicine is encapsulated as such in hard capsules, the pharmaceutical effects of the Kampo medicine cannot be fully achieved, since the dissolution of the content of the hard capsules requires a long period of time. Theref... | 06/07/1994 |
| 5169754 | Biodegradable particle coatings having a protein covalently immobilized by means of a crosslinking agent and processes for making same The invention relates generally to colloidal particles having a crosslinked coating with pendent functional groups attached thereto. Magnetic and non-magnetic particles have a biodegradable, crosslinked gelatin coating to which is covalently attached pend... | 12/08/1992 |
| 5062991 | In situ use of gelatin in the preparation of uniform ferrite particles A method is described for the preparation of uniform colloidal particles of ferrites, containing manganese (II), zinc(II), barium(II), iron(II), cobalt(II), or nickel(II), or a mixture of manganese(II) and zinc(II), at a relatively low temperature in the ... | 11/05/1991 |
| 5051304 | Microcapsules based on gelatin and polysaccharides and process for obtaining same This invention relates to microcapsules based on gelatin and anionic polysaccharides of low molecular weight which may contain solid or liquid matters, prepared by coacervation. The aqueous polysaccharide solutions which may be used present a low viscosit... | 09/24/1991 |
| 5023024 | Process for producing microcapsules A process for producing microcapsules which comprises forming a wall of coacervates on microdroplets of an oily substance of water-insoluble solid particles through reaction between gelatin and an anionic polymer, allowing a ylidoid compound to act on the... | 06/11/1991 |
| 5017383 | Method of producing fine coated pharmaceutical preparation A method of producing a fine coated pharmaceutical preparation, which includes cooling fine liquid droplets composed of a liquid medium, a drug dissolved or suspended in the liquid medium, and as required, a binder to a temperature of not higher than the ... | 05/21/1991 |
| 4990280 | Photoactivator dye composition for detergent use A photoactivator dye composition includes microcapsules of a solid dispersion of a water-soluble photoactivator dye in an encapsulating material that is quickly soluble in water. In a method of preparing such a photoactivator dye composition, the photoact... | 02/05/1991 |
| 4979989 | Alginate-type powdered composition for dental impressions A powdered composition for dental impressions, comprising a water-soluble alginate, a gelling agent, a gelling regulator and fillers coated with a hydrolyzed gelatin.... | 12/25/1990 |
| 4978483 | Apparatus and method for making microcapsules The invention is a process and apparatus for the manufacture of microcapsules. The microcapsules have a core which contains a liquid, gaseous, solid or multiple-phase material which is coated with an impermeable film. The microcapsules are formed by apply... | 12/18/1990 |
| 4908233 | Production of microcapsules by simple coacervation A microcapsule containing hydrous composition containing an electrolyte and microcapsules coated with a water-soluble polymer which undergoes phase separation by the action of the electrolyte. The electrolyte causes the above-mentioned phase separation co... | 03/13/1990 |
| 4884873 | Encapsulated liquid crystal material, apparatus and method having interconnected capsules A liquid crystal apparatus includes a plurality of volumes of liquid crystal material in a containment medium. At least some of the volumes are interconnected. The walls defining the volumes tend to distort the natural liquid crystal structure in the abse... | 12/05/1989 |
| 4818542 | Porous microspheres for drug delivery and methods for making same Controlled release drug delivery systems comprised of spherical microporous polymeric network of interconnecting channels containing pore incorporated drugs or other agents wherein the drugs or agents are confined within the pore channel are described. Al... | 04/04/1989 |
| 4798741 | Preparation of microencapsulated pigment Pigment particles of a suitable size are microencapsulated by mixing them in a gelatin solution, coacervating the gelatin to coat them, cooling to set the gelatin, adding formaldehyde to harden the particles, sequestering unreacted formaldehyde with a bis... | 01/17/1989 |
| 4777089 | Microcapsule containing hydrous composition A microcapsule containing hydrous composition containing an electrolyte and microcapsules coated with a water-soluble polymer which undergoes phase separation by the action of the electrolyte. The electrolyte causes the above-mentioned phase separation co... | 10/11/1988 |
| 4612364 | Method for producing formed product of high molecular compounds A formed product of a high molecular compound having a glass transition temperature of not more than about 60° C., which is substantially free of halogenated solvents harmful to the human body, is produced by mixing the high molecular compound, a halogen... | 09/16/1986 |
| 4608278 | Small particule formation and encapsulation The present invention is concerned with the simultaneous formation and encapsulation of small particles from aqueous solutions of compounds whose solubility is greater at a first pH than at a second pH. The process is preferably used to prepare a readily ... | 08/26/1986 |
| 4606940 | Small particle formation and encapsulation Process for the formation and the simultaneous encapsulation of small particles of a compound from solution which comprises: (a) dissolving said compound in a first solvent; (b) preparing a solution of encapsulating material and an electrolyte in a second solv... | 08/19/1986 |
| 4540602 | Process for the preparation of activated pharmaceutical compositions Disclosed is a process for the preparation of an activated pharmaceutical composition containing a solid drug that is scarcely soluble in water, the pharmaceutical composition being characterized in that, when it is administered orally, the drug is readil... | 09/10/1985 |
| 4482606 | Isodiametrical microcapsules with regularized diameters and process for producing same A microencapsulation of varied substances such as aromatic agents, colorings, inks, chemical reactives, pharmaceutical and phytosanitary products, fireproof products, glues, finely dispersed in an aqueous phase, in order to obtain microcapsules that are s... | 11/13/1984 |
