Microcapsule-sustained Or Differential Release Patents (Class 514/963)
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Patent number: 12186432Abstract: In the present invention, the whole preparation process of the sustained-release microparticles is at normal or low temperature, which is highly advantageous for the preparation of a polymer-based composition from a high-temperature-sensitive drug, particularly a protein, nucleic acid and peptide drug, and the bioactivity of the active substance can be maintained to the greatest extent throughout the process compared to the disclosed technology; at the same time, the prepared sustained-release microparticles have an excellent sustained-release effect close to zero order, and the drug concentration is stabilized during the release, which overcomes the defects that the microparticles obtained by the conventional S/O/W process of pre-preparing the drug microparticles have no drug release in the earlier stage and a rapid release of the drug in the later stage; and in addition, the sustained-release microparticles have higher drug loading rate and drug encapsulation rate.Type: GrantFiled: February 2, 2021Date of Patent: January 7, 2025Assignee: AC PHARMACEUTICALS CO., LTD.Inventors: Feng Liu, Shuting Lai, Yang Zheng, Fuchun Cao, Yuanfa Lian
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Patent number: 11584919Abstract: A capsule composition comprising: (a) a polyester shell having a thickness of no more than 20 microns, and (b) a solution containing a visual and/or olfactory indicator, wherein the solution is encapsulated by the polyester shell. Also described herein is a method for detecting alpha particle radiation, in which: (i) the capsule composition is placed in contact with an esterase in a location where the presence of alpha particle radiation is being determined; (ii) waiting a period of time for the esterase to degrade the polyester shells, wherein the period of time is insufficient for the esterase to cause leakage of the solution in the absence of alpha particle radiation but is sufficient for alpha particle radiation, if present, to cause leakage from the capsule composition; and (iii) observing whether leakage has occurred at the end of the period of time to determine whether alpha particle radiation is present.Type: GrantFiled: January 21, 2020Date of Patent: February 21, 2023Assignee: UT-Battelle, LLCInventors: Timothy E. McKnight, David E. Graham, Robert F. Standaert, Linda A. Lewis, Samuel A. Lewis
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Patent number: 11571367Abstract: Provided herein are compositions and kits including trichloroacetic acid, and methods of using the same for debridement during endodontic treatment.Type: GrantFiled: October 9, 2020Date of Patent: February 7, 2023Inventor: Terrell F. Pannkuk
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Patent number: 8968872Abstract: Microcapsules comprising an agglomeration of primary microcapsules, each individual primary microcapsule having a primary shell and the agglomeration being encapsulated by an outer shell, may be prepared by providing an aqueous mixture of a loading substance and a shell material, adjusting pH, temperature, concentration and/or mixing speed to form primary shells of shell material around the loading substance and cooling the aqueous mixture until the primary shells agglomerate and an outer shell of shell material forms around the agglomeration. Such microcapsules are useful for storing a substance and for delivering the substance to a desired environment.Type: GrantFiled: April 27, 2010Date of Patent: March 3, 2015Assignee: DSM Nutritional Products AGInventor: Nianxi Yan
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Patent number: 8889190Abstract: An extended-release topiramate capsule that includes a capsule shell containing a single population of coated particles; wherein each coated particle includes a core and a coating thereon; wherein each particle core includes a homogeneous mixture comprising topiramate throughout its core; and wherein the coating includes one or more release controlling agent(s).Type: GrantFiled: January 17, 2014Date of Patent: November 18, 2014Assignee: Upsher-Smith Laboratories, Inc.Inventors: Sarah Michelle Betterman, Jaidev Srinivas Tantry, Laura Marie Patrick
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Patent number: 8828415Abstract: The present Invention deals with an alternative Interfacial polymerization process of microencapsulation, microcapsule's produced thereof, microencapsulated agrochemicals, pharmaceuticals, catalysts and phase transfer materials, and formulations thereof, by means of microcapsules and starting materials with the participation of acetylene carbamide derivatives in the final structure of the microcapsules' wall.Type: GrantFiled: June 5, 2012Date of Patent: September 9, 2014Inventors: Victor Casaña Giner, Miguel Gimeno Sierra, Barbara Gimeno Sierra
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Patent number: 8652527Abstract: An extended-release topiramate capsule that includes a capsule shell containing a single population of coated particles; wherein each coated particle includes a core and a coating thereon; wherein each particle core includes a homogeneous mixture comprising topiramate throughout its core; and wherein the coating includes one or more release controlling agent(s).Type: GrantFiled: March 19, 2013Date of Patent: February 18, 2014Assignee: Upsher-Smith Laboratories, IncInventors: Sarah Michelle Betterman, Jaidev Srinvas Tantry, Laura Marie Patrick
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Patent number: 8557294Abstract: The present invention relates to novel coating compositions for application to solid dosage forms such as tablets or caplets, solid dosage forms coated with the composition, and methods of preparing said coating compositions.Type: GrantFiled: February 25, 2011Date of Patent: October 15, 2013Assignee: Capsugel Belgium NVInventors: Robert Anthony Scott, Dominique Cade, Frederic Hoehn, Ewart Thomas Cole
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Patent number: 8435953Abstract: An object of the present invention is to provide a sustained release composition containing SDF-1. The present invention provides a sustained release composition containing (1) SDF-1 and (2) a hydrogel containing modified gelatin having a carboxyl group and/or a sulfo group. Since the composition can release SDF-1, a chemokine which is a capable of promoting accumulation of vascular progenitor cells in vivo, in the sustained manner, it can be useful for treatment and/or suppression of symptom progression of ischemic disease or bone disease, as pharmaceutical preparations in various formulations.Type: GrantFiled: November 6, 2008Date of Patent: May 7, 2013Assignees: Ono Pharmaceutical Co., Ltd.Inventor: Yasuhiko Tabata
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Patent number: 8343483Abstract: New strains of Lactobacillus that have been selected for their capability of improved reduction the number of Streptococcus mutans in the mouth of mammals through inhibiting activity in combination with better binding to the oral mucins and dental plaque, thereby preventing, reducing or treating dental caries, and products derived from said strains, including agents for treatment or prophylaxis of caries for administration to humans.Type: GrantFiled: October 15, 2008Date of Patent: January 1, 2013Assignee: Biogaia ABInventors: Bo Mollstam, Eamonn Connolly
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Patent number: 8329856Abstract: The present invention relates to a preparation method for a biodegradable polymer microparticle and a microparticle prepared by the method. More particularly, the present invention relates to a method for preparing a polymer microparticle, wherein the method includes the steps of: dissolving a biodegradable polyester-based polymer in DMSO (Dimethyl Sulfoxide); spraying the solution in a low temperature hydrocarbon solution to provide a frozen DMSO microparticle; adding the microparticle in a low temperature salt aqueous solution to dissolve DMSO; and removing salt. The present invention provides a method for preparing a novel polymer microsphere which can be injected through a syringe due to excellent physical properties (such as biocompatibility, biodegradability, porosity, mechanical strength) and the microcarrier's size-adjustability, and can be easily mass-produced.Type: GrantFiled: June 13, 2011Date of Patent: December 11, 2012Assignee: Regen Biotech Inc.Inventors: Gun Poong Kim, Yong Hoon Lee, Kun Pil Lee
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Patent number: 8216598Abstract: The present invention deals with an alternative interfacial polymerization process of microencapsulation, microcapsule's produced thereof, microencapsulated agrochemicals, pharmaceuticals, catalysts and phase transfer materials, and formulations thereof, by means of microcapsules and starting materials with much lower toxicological profile than customary microencapsulation materials, and with the participation of acetylene carbamide derivatives in the final structure of the microcapsules' wall.Type: GrantFiled: March 28, 2007Date of Patent: July 10, 2012Assignee: GAT Microencapsulation AGInventors: Victor Casaña Giner, Miguel Gimeno Sierra, Barbara Gimeno Sierra
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Patent number: 8101209Abstract: The invention relates to a microparticulate system for the delayed and controlled release of active principles (AP) whose absorption window in vivo is essentially limited to the upper parts of the gastrointestinal tract, this system being intended for oral administration. The object of the invention is to provide a system ensuring that the AP is released with certainty by means of a dual mechanism of “time-dependent” and “pH-dependent” release. To achieve this object, the invention proposes a multimicrocapsular oral galenical form which is designed so as to guarantee therapeutic efficacy, and in which the release of the AP is governed by a dual release triggering mechanism that is “time-triggering” and “pH-triggering”. This system comprises of microcapsules (200 to 600 ?m) comprising a core of AP coated with a film (maximum 40% by weight) comprising a hydrophilic polymer A (Eudragit® L) and a hydrophobic compound B (vegetable wax, melting point=40-90° C.), B/A being between 0.2 and 1.5.Type: GrantFiled: April 19, 2004Date of Patent: January 24, 2012Assignee: Flamel TechnologiesInventors: Valérie Legrand, Catherine Castan, Rémi Meyrueix, Gérard Soula
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Patent number: 8092830Abstract: A process for producing a lactic acid polymer of 15,000 to 50,000 in weight-average molecular weight, the content of polymeric materials having not more than about 5,000 in weight-average molecular weight therein being not more than about 5% by weight, characterized by hydrolyzing a high molecular weight lactic acid polymer, placing the resultant solution comprising the hydrolyzed product under a condition capable of precipitating the objective lactic acid polymer, separating the precipitated lactic acid polymer and collecting them. The lactic acid polymer is useful as a matrix for sustained-release preparations. The sustained-release microcapsule preparation encapsulating a physiologically active substance can fully prevent the initial excessive release of the physiologically active substance from the microcapsules and keep a stable release rate over a long period of time.Type: GrantFiled: July 2, 2007Date of Patent: January 10, 2012Assignees: Wako Pure Chemical Industries, Ltd., Takeda Pharmaceutical Company LimitedInventors: Kohei Yamamoto, Tsutomu Tani, Takashi Aoki, Yoshio Hata
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Patent number: 8034450Abstract: Described herein are microcapsules and emulsions prepared from low Bloom gelatin and methods of making and using thereof.Type: GrantFiled: September 15, 2005Date of Patent: October 11, 2011Assignee: Ocean Nutrition Canada LimitedInventors: Jonathan Michael Curtis, Wei Zhang, Yulai Jin, Colin James Barrow
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Patent number: 7943353Abstract: A multi-layered microcapsule has an inner extracellular matrix and an outer shell. The inner extracellular matrix includes a first inner layer of biopolymer and a second intermediate layer of polymer that provides partial immune-protection and holds the first layer in place. The outer shell can form an exoskeleton to provide mechanical stability. Each of the individual layers can be varied to optimize mechanical stability, cell function, and immuno-protection.Type: GrantFiled: July 23, 2009Date of Patent: May 17, 2011Assignees: Agency for Science, Technology and Research, The National University of SingaporeInventors: Hanry Yu, Kam W Leong, Ser-Mien Chia, Andrew C. A. Wan
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Patent number: 7785478Abstract: A method for controlling protozoa trophozites and cysts wherein biocides or control agents are encapsulated within microcapsules or manufactured into the core of liposomes, thereafter the biocide containing microcapsules or liposomes are then introduced into an aqueous system.Type: GrantFiled: August 8, 2007Date of Patent: August 31, 2010Assignee: General Electric CompanyInventors: Wilson Kurt Whitekettle, Gloria Jean Tafel
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Patent number: 7754655Abstract: The invention relates to novel microcapsule formulations of (A) a particulate disperse phase of microcapsules comprising (1) a polyurea and/or polyurethane coating with average layer thicknesses of between 5 and 20 nm, and (2) a capsule filling comprising at least one penetrant and, optionally, additives, and (B) a suspension comprising (1) at least one solid agrochemical active compound, (2) additives, (3) water, and (4) optionally, one or more agrochemical active compounds that are liquid at room temperature. The invention further relates to a process for the preparation of these microcapsule formulations and to their use for applying agrochemical active compounds.Type: GrantFiled: May 16, 2003Date of Patent: July 13, 2010Assignee: Bayer Cropscience AGInventors: Hilmar Wolf, Peter Baur, Manfred Zimmermann
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Patent number: 7727629Abstract: Microcapsules comprising an agglomeration of primary microcapsules, each individual primary microcapsule having a primary shell and the agglomeration being encapsulated by an outer shell, may be prepared by providing an aqueous mixture of a loading substance and a shell material, adjusting pH, temperature, concentration and/or mixing speed to form primary shells of shell material around the loading substance and cooling the aqueous mixture until the primary shells agglomerate and an outer shell of shell material forms around the agglomeration. Such microcapsules are useful for storing a substance and for delivering the substance to a desired environment.Type: GrantFiled: July 15, 2004Date of Patent: June 1, 2010Assignee: Ocean Nutrition Canada LimitedInventor: Nianxi Yan
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Patent number: 7718572Abstract: An aqueous microcapsule suspension liquid exhibiting an excellent (long-term) storage stability and allowing easy re-dispersion and dilution with water even after such a storage, is produced by adding a microorganism-fermented polysaccharide of succinoglycan type as a thickening agent into a microcapsule slurry, or by adding such a microorganism-fermented polysaccharide as a thickening agent to a microcapsule slurry after uniform dilution with water.Type: GrantFiled: June 11, 2001Date of Patent: May 18, 2010Assignee: Kureha CorporationInventors: Yutaka Igari, Tsuneo Okamoto, Yuzi Hori
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Patent number: 7700333Abstract: This invention relates to a method for immobilizing cells under laminar flow conditions in a matrix formed by biocompatible charged polymers, to a flow device for the use with the method of the present invention, and to uses of the polymer matrices containing the cells immobilized using the method of the present invention.Type: GrantFiled: July 26, 2004Date of Patent: April 20, 2010Assignee: Agency for Science Technology & ResearchInventors: San San Susanne Ng, Hanry Yu
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Patent number: 7425543Abstract: A method of forming microspheres of a bioactive material, such as a protein polymer or drug by nebulizing a solubilized form of a material to be encapsulated and an encapsulating material, such as albumin, in a stirred chilled solvent system comprising a vegetable oil, mineral oil and/or a lower alcohol such that the formed microspheres demonstrate intracellular bioactivity when taken up by macrophages.Type: GrantFiled: August 29, 2002Date of Patent: September 16, 2008Assignee: The Corporation of Mercer UniversityInventor: Martin J. D'Souza
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Patent number: 7229949Abstract: A safe delivery system of agriculturally active material is formed using an encapsulation process. A microencapsulated suspension of agriculturally active material includes an encapsulating agent formed from a graft copolymer of starch and at least one vinyl monomer.Type: GrantFiled: June 29, 2005Date of Patent: June 12, 2007Assignee: United Phosphorus, Ltd.Inventors: Prakash Mahadev Jadhav, Jaidev Rajnikant Shroff
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Patent number: 7223724Abstract: The present invention is directed to VEGF-2 polynucleotides and polypeptides and methods of using such polynucleotides and polypeptides. In particular, provided are methods of treating retinal disorders with VEGF-2 polynucleotides and polypeptides.Type: GrantFiled: February 7, 2000Date of Patent: May 29, 2007Assignee: Human Genome Sciences, Inc.Inventors: Ralph Alderson, Robert Melder, Viktor Roschke, Steven M. Ruben, Craig A. Rosen
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Patent number: 7144585Abstract: Provided is a cilostazol preparation which comprises incorporating a fine powder of cilostazol into a dispersing and/or solubilizing agent thereby to enhance the dispersibility and/or solubility. Further, provided is a process for improving absorbability of a slightly soluble drug such as cilostazol even at the lower portion of the digestive tract, wherein said drug is hard to be absorbed at the lower portion of the digestive tract when a conventional method is used. According to the present invention, cilostazol is absorbed enough even at the lower portion of the digestive tract to have an effect as thrombolytic drug, cerebral circulation improving drug or the like.Type: GrantFiled: March 21, 2000Date of Patent: December 5, 2006Assignee: Otsuka Pharmaceutical Co., Ltd.Inventors: Tadashi Mukai, Yuso Tomohira, Masafumi Toda, Keigo Yamada, Yoshikazu Oka
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Patent number: 7119062Abstract: The invention provides methods for treating post-surgical articular or incisional pain and/or discomfort in a patient. The invention further provides improved surgical methods and controlled release formulations for treating an articular injury of a joint in a patient, in which a collagen formulation is used in conjunction with a surgical procedure to treat the articular injury or the side effects of the surgical procedure. Collagen formulations of the invention and their use, in addition to the surgical procedure, may provide at least one or more of the following benefits: reduced patient pain, shortened recovery time and/or improved joint condition (including treatment of the underlying articular injury). Moreover, the methods and compositions of the invention can be used in conjunction with essentially any surgical procedure used to treat an articular injury.Type: GrantFiled: February 22, 2002Date of Patent: October 10, 2006Assignee: Neucoll, Inc.Inventors: Mark Ray Alvis, Melissa K. C. Brown, Roy C. Fiebiger
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Patent number: 7067153Abstract: A process for making hydrophobicized powders of micro- and/or nanocapsules involving the steps of: (a) providing an aqueous polymer solution containing at least one active ingredient and at least one hydrophilic polymer; (b) providing an oil component heated to a temperature above a gel point of the aqueous polymer solution; (c) dispersing (a) in (b) in the presence of a water-in-oil emulsifier to form a dispersion; (d) cooling the dispersion to a temperature below the gel point of the aqueous polymer solution to form micro- and/or nanocapsules containing the active ingredient encapsulated therein; (e) harvesting the micro- and/or nanocapsules from the dispersion; and (f) contacting the micro- and/or nanocapsules with an oil-absorbing auxiliary ingredient.Type: GrantFiled: September 18, 2001Date of Patent: June 27, 2006Assignee: Cognis France S.A.Inventor: Philippe Grisoni
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Patent number: 7045496Abstract: The present invention is directed to VEGF-2 polynucleotides and polypeptides and methods of using such polynucleotides and polypeptides. In particular, provided are methods of treating retinal disorders with VEGF-2 polynucleotides and polypeptides.Type: GrantFiled: February 7, 2000Date of Patent: May 16, 2006Assignee: Human Genome Sciences, Inc.Inventors: Ralph Alderson, Robert Melder, Viktor Roschke, Steven M. Ruben, Craig A. Rosen
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Patent number: 6992047Abstract: A method of producing a controlled release form of an agricultural active material includes the provision of an organic liquid composition in which the active is present, but where the liquid composition is free from aromatic solvents and is maintained below the normal melting point of the active. The liquid composition is formed into small droplets and the droplets are enclosed by a non-water soluble shell to provide microcapsules, the shell of which is designed to release the agricultural active at a pre-selected controlled rate when the microcapsule is exposed to natural environmental conditions. Controlled release forms of agricultural actives are also provided.Type: GrantFiled: April 3, 2002Date of Patent: January 31, 2006Assignee: Monsanto Technology LLCInventors: Jawed Asrar, Yiwei Ding
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Patent number: 6921538Abstract: Methods for treating psychiatric disorders include intracranial administration of a therapeutically effective amount of a neurotoxin, such as a botulinum toxin type A, to a human patient.Type: GrantFiled: May 10, 2002Date of Patent: July 26, 2005Assignee: Allergan, Inc.Inventor: Stephen Donovan
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Patent number: 6916640Abstract: A multi-layered microcapsule has an inner extracellular matrix and an outer shell. The inner extracellular matrix includes a first inner layer of biopolymer and a second intermediate layer of polymer that provides partial immune-protection and holds the first layer in place. The outer shell can form an exoskeleton to provide mechanical stability. Each of the individual layers can be varied to optimize mechanical stability, cell function, and immuno-protection.Type: GrantFiled: October 12, 2001Date of Patent: July 12, 2005Assignees: Agency for Science, Technology and Research, National University of SingaporeInventors: Hanry Yu, Kam W. Leong, Ser-Mien Chia, Andrew C. A. Wan
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Patent number: 6905875Abstract: A non-disruptive three-dimensional culture system allows cell growth and proliferation in three dimensions, permitting cell splitting without subjecting cells to disruptive conditions that affect cell structure and functions. An extracellular matrix provides a good environment for culturing or co-culturing anchorage-dependent cells. The cells cultured this manner can be readily used in such applications as cell transplantation, tissue engineering seeding of cells on scaffolds, and other applications that require immediate availability of functioning cells.Type: GrantFiled: October 12, 2001Date of Patent: June 14, 2005Assignees: National University of Singapore, Agency for Science, Technology and ResearchInventors: Hanry Yu, Kam W. Leong, Ser-Mien Chia
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Patent number: 6878309Abstract: A controlled-release additive composition for use in aqueous systems. The composition comprises a core containing at least one additive component and a polymeric coating encapsulating said core. The controlled released cooling additive composition slowly releases the additive components to aqueous system, thereby delivering an effective concentration level of additive components over an extended period.Type: GrantFiled: February 12, 2001Date of Patent: April 12, 2005Assignee: Dober Chemical Corp.Inventors: Thomas J. Blakemore, Yu-Sen Chen
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Patent number: 6841515Abstract: This invention relates to the production and use of encapsulated and/or concentrically-constructed fertilizer or bioremediation granules such as, for example, granules of 0.5 mm to 10 mm in diameter constructed so that there are at least two components to the granule including a core with a surrounding capsule or a core with one or more concentric layers that are distinguishable from the core with respect to nutrient content, density, hardness, solubility, composition, microbial content and permeability, as in permeability to odors or the permeability of nutrients that might volatize to the atmosphere or leach into the soil. The basic idea was to create a method for manufacturing and using fertilizer granules, which incorporate multiple concentric layers or a core plus an encapsulating outer layer.Type: GrantFiled: January 22, 2002Date of Patent: January 11, 2005Assignee: Unified Enviromental Services Group, L.L.C.Inventor: Jeffrey C. Burnham
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Patent number: 6821532Abstract: This invention relates to a composition for use in treating benign prostatic hyperplasia including a saw palmetto extract provided in an oral controlled release formulation which allows release of active ingredients in the intestinal tract and which allows the maintenance of therapeutic levels of active agents in the bloodstream for prolonged periods of time. This invention also relates to a composition for improving the efficacy of a saw palmetto extract, a method of treating benign prostatic hypertrophy, and a method of improving the efficacy of a saw palmetto extract treatment.Type: GrantFiled: November 16, 2001Date of Patent: November 23, 2004Assignee: Unitel Technologies, Inc.Inventors: Sikander Randhava, Surjit Randhava, Sarabjit Randhava
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Patent number: 6730635Abstract: The invention relates to microcapsule suspensions containing (A) a particulate disperse phase of microcapsules comprising: (1) sleeves that are reaction products of mixtures of toluylene diisocyanate and 4,4′-methylenebis-(cyclohexyl isocyanate) with at least one diamine and/or polyamine, and (2) a capsule filling comprising: (i) at least one solid insecticidally and/or herbicidally active compound, (ii) at least one liquid aliphatic hydrocarbon having a boiling point above 160° C., (iii) at least one oil-soluble polymeric dispersing agent, and (iv) optional agrochemically active compounds that are liquid at room temperature, and (B) a liquid aqueous phase comprising water, optional additives, and optional agrochemically active compounds in non-encapsulated form that are solid at room temperature.Type: GrantFiled: September 12, 2002Date of Patent: May 4, 2004Assignee: Bayer AGInventors: Hilmar Wolf, Norbert Schick, Björn Christensen, Anne Suty-Heinze
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Patent number: 6699500Abstract: Disclosed is a sustained-release preparation comprising 1) a polymer of lactic acid having a weight-average molecular weight of about 25,000 to about 60,000 and 2) a physiologically active substance, and which releases the physiologically active substance over a period of at least about 5 months; the sustained-release preparation shows an almost continuous zero order release of the physiologically active substance over a period of as long as about 5 months.Type: GrantFiled: March 7, 2000Date of Patent: March 2, 2004Assignee: Takeda Chemical Industries, Ltd.Inventors: Hiroaki Okada, Yayoi Douken
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Patent number: 6692773Abstract: The invention relates to the use of one or more noble metals selected from silver, gold, platinum, and palladium but most preferably silver, in a nanocrystalline form, for the treatment of a hyperproliferative skin disorder or disease such as psoriasis. Among the noble metals, silver is preferred for such treatment. The nanocrystalline noble metal of choice may be used in the form of a nanocrystalline coating of one or more noble metals, a nanocrystalline powder of one or more noble metals, or a solution containing dissolved species from a nanocrystalline powder or coating of one or more noble metals.Type: GrantFiled: July 27, 2001Date of Patent: February 17, 2004Assignee: Nucryst Pharmaceuticals Corp.Inventors: Robert Edward Burrell, John Barrymore Wright, Kan Lam
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Patent number: 6649151Abstract: The present invention includes a cosmetic formulation. The cosmetic formulation comprises a plurality of spheres having a first desiccated volume and having a second hydrated volume. The hydrated volume is greater than the desiccated volume.Type: GrantFiled: September 17, 2002Date of Patent: November 18, 2003Assignee: Coty Inc.Inventors: Salvatore Barone, Antonietta Corrigan, Mita Mody, Melizza Bautista, Ralph Macchio, Louis Veltry
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Patent number: 6645525Abstract: Compositions for sustained delivery of a biomolecule including an anionic polymer and a cationic polymer which ironically interact with each other and, optionally, with the biomolecule. Methods for making the compositions, including the step of combining the negatively charged polymer with the positively charged polymer to form an ionic complex are also provided. The biomolecule may be complexed with one of the polymers before it is complexed with the oppositely charged polymer. The complex is exposed to conditions that cause the formation of precipitated microcarriers, such as a change in pH or the addition of a complexing molecule. The compositions are preferably formulated into microcarriers.Type: GrantFiled: May 6, 2002Date of Patent: November 11, 2003Assignee: Sedum Laboratories, Inc.Inventor: James E. Woiszwillo
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Patent number: 6620415Abstract: Methods for treating a movement disorder by intracranial administration to a human patient of a therapeutically effective amount of a neurotoxin, such as a botulinum toxin type A.Type: GrantFiled: July 11, 2001Date of Patent: September 16, 2003Assignee: Allergan, Inc.Inventor: Stephen Donovan
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Patent number: 6576677Abstract: The present invention provides a composition alleviated in a bitter taste or the like of a medicament. The present invention relates to a composition comprising a basic medicament having an unpleasant taste and polyvinylpyrrolidone and/or copolyvidone; or a method for alleviating an unpleasant taste of a basic medicament having the unpleasant taste by adding polyvinylpyrrolidone and/or copolyvidone. The present invention further provides a composition comprising (1) a basic medicament, (2) polyvinylpyrrolidone and/or copolyvidone, and (3) propylene glycol and/or D-sorbitol; a composition comprising (1) a basic medicament, (2) polyvinylpyrrolidone and/or copolyvidone, and (4) an antioxidant; and a composition comprising (1) a basic medicament, (2) polyvinylpyrrolidone and/or copolyvidone, and (5) a colorant or flavor containing a sulfuric acid or sulfurous acid group.Type: GrantFiled: April 28, 2000Date of Patent: June 10, 2003Assignee: Eisai Co., Ltd.Inventors: Koji Ukai, Tsutomu Harada
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Patent number: 6569809Abstract: A concentrate package-mix composition comprising a water-soluble pesticide or plant growth regulator, for example a salt of the herbicide glyphosate, and a solid water-insoluble pesticide or plant growth regulator, for example the herbicide flumioxazin, is provided. The water-soluble pesticide or plant growth regulator is dissolved in a continuous aqueous phase of the composition and solid particles of the water-insoluble pesticide or plant growth regulator are suspended in the aqueous phase. These solid particles, individually or plurally, are intimately surrounded by a barrier layer, which comprises either one or both of a water-immiscible organic solvent or an emulsifying agent that has a hydrophile-lipophile balance (HLB) not greater than about 15. Optionally the composition further comprises a viscosity modifying agent, such as colloidal hydrophilic silica, dispersed in the aqueous phase.Type: GrantFiled: September 27, 2000Date of Patent: May 27, 2003Assignee: Monsanto CompanyInventors: Tatsuo Sato, Masus Kuchikata
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Patent number: 6562835Abstract: Urinary incontinence is alleviated in a mammal by administering to the mammal a urinary incontinence alleviating amount of dextromethorphan, dextrorphan, their mixtures and/or pharmaceutically acceptable salts, alone or in combination with a pharmacologically active agent such as an anticholinergic, sympathomimetic, tricyclic antidepressant, antispasmodic, direct-acting smooth muscle relaxant, estrogen, compound having estrogen-like activity, or any combination of the foregoing.Type: GrantFiled: October 21, 1996Date of Patent: May 13, 2003Assignee: Endo Pharmaceuticals Inc.Inventor: Frank S. Caruso
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Patent number: 6544538Abstract: An insecticidal bait composition which is particularly useful against social insects, such as cockroaches and ants is disclosed. The bait composition comprises a solid or semi-solid bait matrix including a food material for an insect and one or more non-microencapsulated insecticides in an amount effective to act essentially as a primary kill agent and one or more microencapsulated insecticides, excluding pyrethroids, in an amount effective to act essentially as a secondary kill agent, the non-microencapsulated insecticide and microencapsulated insecticide being the same or different.Type: GrantFiled: April 12, 1999Date of Patent: April 8, 2003Assignee: Reckitt Benckiser (Australia) PTY LimitedInventor: Gavin Ronald Caine
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Patent number: 6540991Abstract: A stabilized insect mating disruption pheromone compositions comprising an insect pheromone and 2,2′-Methylenebis(6-t-butyl-p-cresol). Methods of use and microcapsules containing these compositions are also provided.Type: GrantFiled: April 6, 2001Date of Patent: April 1, 2003Assignee: 3M Innovative Properties CompanyInventors: Darryl F. Klassen, David J. Muir
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Patent number: 6534094Abstract: A process for the manufacturing of microcapsules for sustained release of water soluble peptides, with adjustable release periods of between 1 to 18 weeks. The microcapsule wall are made of a biodegradable polymer. The process is based on the formation of an intermediate complex water/oil/water emulsion. By evaporating the solvent in the emulsion by pressure reduction the microcapsules consolidate, retaining the active peptides in the polymeric matrix. The process produces the complex emulsion in a two mixer, continuous operation. In the first mixer a water/oil emulsion is formed and it is used to form the complex emulsion in the second mixer. By operating in a continuous manner, the process overcome the problems found in existing processes regarding particle size distribution, material losses and process control, among others.Type: GrantFiled: May 3, 2001Date of Patent: March 18, 2003Assignee: Eriochem S.A.Inventors: Nora Moyano, Jose Iturraspe, Jose Lucio Nunez
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Patent number: 6517859Abstract: The present invention relates to polymeric microspheres as injectable, drug-delivery vehicles for use to deliver bioactive agents to sites within the central nervous system, and for the stimulation of nerve fiber growth by implanting such microspheres within the central nervous system of a patient. Microspheres of less than 45 &mgr;m, preferably less than about 20 &mgr;m, and preferably about 0.1 &mgr;m to about 10 &mgr;m in mean diameter according to the present invention are also selectively taken-up and into astrocytes when delivered directly into the nervous tissues.Type: GrantFiled: June 29, 1994Date of Patent: February 11, 2003Assignee: Southern Research InstituteInventors: Thomas R. Tice, Deborah L. Dillon, David W. Mason, Amanda McRae-McFarlane, Annica B. Dahlstrom
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Patent number: 6491953Abstract: A controlled release composition comprising an adsorbent polymer, an active agent, and a release retardant is disclosed. The composition has an improved ability to release the active agent over an extended time period.Type: GrantFiled: January 7, 2000Date of Patent: December 10, 2002Assignee: Amcol International CorporationInventors: Milan F. Sojka, Ralph Spindler
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Patent number: RE39104Abstract: A process for the production of a solid dispersion of at least one therapeutic agent in a hydrophilic carrier having enhanced solubility in an aqueous media comprising dissolving at least one therapeutic agent in a volatile organic solvent containing a very hydrophilic polymer and evaporating the solvent to dryness to form a co-precipitate of therapeutic agent and hydrophilic polymer and the resulting products and their therapeutic method of use.Type: GrantFiled: July 8, 2002Date of Patent: May 23, 2006Assignee: Laboratoires EffikInventors: Roselyne Duclos, Didier Terracol