Ion-exchange Resins Patents (Class 424/483)
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Patent number: 11944633Abstract: An oral pharmaceutical composition is provided that can comprise a rho kinase inhibitor, for example, fasudil, a pharmaceutically acceptable salt thereof, a hydrate thereof, a prodrug thereof, a substituted derivative thereof, or a metabolite thereof, or any combination thereof, the rho kinase inhibitor having a bitter taste; and an ion exchange resin. The ion exchange resin can partially or fully mask the bitter taste of the rho kinase inhibitor, making the composition more palatable. The composition can comprise a solid dosage form, and/or a liquid dosage form. The solid dosage form can comprise a powder, granules, a tablet, or a capsule, or any combination thereof. The composition can be present, for example, in a unit dose, in an amount sufficient to treat a neurodegenerative disease. A method of treating the neurodegenerative disease with the oral pharmaceutical composition is provided. The method can ameliorate a symptom of a neurodegenerative disease.Type: GrantFiled: February 17, 2023Date of Patent: April 2, 2024Assignee: Woolsey Pharmaceuticals, Inc.Inventors: Qicai Liu, Hemant N. Joshi, Thomas MacAllister
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Patent number: 10493082Abstract: The present invention relates to novel 4-pregenen-11?-17-21-triol-3,20-dione derivatives, processes for preparing them, pharmaceutical compositions containing them and their use as pharmaceuticals, as modulators of glucocorticoid or mineralocorticoid receptors. The invention relates specifically to the use of these compounds and their pharmaceutical compositions to treat disorders associated with glucocorticoid or mineralocorticoid receptor modulation.Type: GrantFiled: August 4, 2016Date of Patent: December 3, 2019Assignee: ALLERGAN, INC.Inventors: Jeffrey L. Edelman, Alissar Nehme, Thomas C. Malone
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Patent number: 8933081Abstract: The invention relates to an orodispersible tablet comprising the components pharmaceutically acceptable sildenafil salt (a), polymeric adsorbent (b), in particular cation exchanger resin, sweetener (c), and flavoring (d) and, preferably, mucilage (e) and glidant (f). The invention furthermore relates to a process for the preparation of orodispersible tablets comprising a pharmaceutically acceptable sildenafil salt and to the use of a combination of cation exchanger resin and mucilage for masking the flavor of medicaments for treating erectile dysfunction.Type: GrantFiled: March 31, 2010Date of Patent: January 13, 2015Assignee: ratiopharm GmbHInventors: Sven Winter, Max-Werner Scheiwe
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Patent number: 8808743Abstract: Benzonatate resinates of weak acid ion exchange resins having the same distribution of butyl 4-aminobenzoate homologs as exist in the benzonatate listed in the F.D.A. Orange Book as Application No. N011210. These resinates, in simulated gastrointestinal dissolution, release essentially the same distribution of butyl-4 aminobenzoate homologs as exist in the benzonatate listed in the F.D.A. Orange Book as Application No. N011210.Type: GrantFiled: December 13, 2012Date of Patent: August 19, 2014Inventors: William Wayne Howard, Russell Francis Somma
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Patent number: 8623409Abstract: An oral clonidine dosage unit providing a twenty-four hour extended release profile following a single dose administration is provided. The dosage unit comprises a pharmaceutically effective amount of a coated complex comprising clonidine bound to a cationic exchange resin, which is characterized by a twenty-four hour release profile with a single peak, wherein said oral clonidine dosage unit provides a therapeutically effective plasma concentration for at least about 70%, or at least 85% of the twenty-four hour period following the single dose administration. Both liquid and solid formulations are provided, as are methods of treating a patient by a single administration of a formulation of the invention so as to achieve a therapeutic effect for 24-hours.Type: GrantFiled: October 20, 2010Date of Patent: January 7, 2014Assignee: Tris Pharma Inc.Inventors: Ketan Mehta, Yu-Hsing Tu
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Patent number: 8617602Abstract: Multi-layer solid oral dosage immediate release and extended release compositions and methods for delivering drug formulations using weak acid ion exchange resins in abnormally high pH environments.Type: GrantFiled: April 23, 2012Date of Patent: December 31, 2013Inventors: William Wayne Howard, Russell Francis Somma, Sajeev Chandran, Pravin Megharji Bhutada, Ashish Ashokkao Deshmukh, Hemant Hanumant Bhalerao
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Patent number: 8586186Abstract: A pressure-sensitive adhesive sheet contains at least a pressure-sensitive adhesive layer containing an acrylic pressure-sensitive adhesive containing an acrylic polymer composition containing an acrylic polymer as a main component and a tackifier containing a tackifying resin as a main component, wherein reflection rate and attached amount in the fogging test in accordance with German Industrial Standard DIN 75201 are 70% or more and 2.0 mg or less, respectively. In the acrylic pressure-sensitive adhesive which forms the pressure-sensitive adhesive layer, a ratio of components having a molecular weight of 300 or less is preferably 4.2% by weight or less based on the total amount of solid matter of the acrylic pressure-sensitive adhesive. Furthermore, in the tackifying resin in the tackifier, a ratio of components having a molecular weight of 300 or less is suitably 4.2% by weight or less based on the total amount of solid matter of the tackifying resin.Type: GrantFiled: October 26, 2010Date of Patent: November 19, 2013Assignee: Nitto Denko CorporationInventors: Tomonari Naito, Michio Umeda, Akiko Takahashi
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Patent number: 8568777Abstract: The present invention relates to packaged orally consumable film dosage units for delivery of actives into the oral cavity. In particular, the packaged pharmaceutical product contains a complexate including a complexing agent and an active, an orally consumable film for delivery of the complexate and a package for containing the orally consumable film. The package includes indicia associated therewith. The indicia identifies the complexate as the active ingredient contained in the film, which is as a regulatory approvable chemical entity. The present invention also relates to methods of labeling, pricing, marketing and satisfying governmental regulations for such packaged pharmaceutical products.Type: GrantFiled: March 30, 2007Date of Patent: October 29, 2013Assignee: MonoSol Rx, LLCInventor: Richard C. Fuisz
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Patent number: 8445014Abstract: The present invention provides methods and compositions for the treatment of ion imbalances. In particular, the invention provides core-shell compositions and pharmaceutical compositions thereof. Methods of use of the core-shell compositions for therapeutic and/or prophylactic benefits are disclosed herein. Examples of these methods include the treatment of phosphate imbalance disorders, hypertension, chronic heart failure, end stage renal disease, liver cirrhosis, chronic renal insufficiency, fluid overload, or sodium overload.Type: GrantFiled: September 26, 2008Date of Patent: May 21, 2013Assignee: Relypsa, Inc.Inventors: Dominique Charmot, Han-Ting Chang, Eric Connor, Mingjun Liu, Gerrit Klaerner
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Patent number: 8357398Abstract: Oral dosage forms of benzonatate useful for anti-tussive and anti-tussive/combination applications.Type: GrantFiled: October 20, 2010Date of Patent: January 22, 2013Assignee: Alitair Pharmaceuticals Inc.Inventors: William Wayne Howard, Russell Francis Somma, Doreen Marie Frank
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Patent number: 8192758Abstract: The present invention provides methods and compositions for the treatment of ion imbalances. In particular, the invention provides core-shell compositions and pharmaceutical compositions thereof. Methods of use of the core-shell compositions for therapeutic and/or prophylactic benefits are disclosed herein. Examples of these methods include the treatment of phosphate imbalance disorders, hypertension, chronic heart failure, end stage renal disease, liver cirrhosis, chronic renal insufficiency, fluid overload, or sodium overload.Type: GrantFiled: March 30, 2004Date of Patent: June 5, 2012Assignee: Relypsa, Inc.Inventors: Dominique Charmot, John Fordtran, Han Ting Chang, Eric Connor, Mingjun Liu, Gerrit Klaerner
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Patent number: 8187617Abstract: Immediate release compositions and methods for delivering drug formulations using weak acid ion exchange resins in abnormally high pH environments.Type: GrantFiled: September 3, 2010Date of Patent: May 29, 2012Inventors: William Wayne Howard, Russell Francis Somma
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Patent number: 8119125Abstract: Methods and compositions are provided for stabilizing polypeptides for oral administration, particularly where enteric delivery is desirable. By administering the polypeptides with a bile sequestering agent, the stability of the polypeptide can be increased. Pharmaceutical formulations for this purpose are provided.Type: GrantFiled: October 11, 2006Date of Patent: February 21, 2012Assignee: Alvine Pharmaceuticals, Inc.Inventor: Jonathan David Gass
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Patent number: 8044017Abstract: A method for purifying a polypeptide by ion exchange chromatography is described in which a gradient wash is used to resolve a polypeptide of interest from one or more contaminants.Type: GrantFiled: September 10, 2003Date of Patent: October 25, 2011Assignee: Genentech, Inc.Inventors: Jefferson C. Emery, Paul J. McDonald, Rhona O'Leary
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Patent number: 8008378Abstract: The present invention provides a taste-masked composition containing an active compound. The composition is taste-masked by employing a loaded polymeric matrix which is produced by incorporating or complexing the active compound on a polymeric matrix having ionic functional groups and removing unbound active compounds from the polymeric matrix.Type: GrantFiled: July 27, 2004Date of Patent: August 30, 2011Assignee: Novartis AGInventors: Robert D. Hargens, Yimin Jia, Greg Slominski, Suresh Vayalakkada
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Patent number: 7488495Abstract: The present invention provides methods and compositions for the treatment of ion imbalances. In particular, the invention provides compositions comprising potassium binding polymers and pharmaceutical compositions thereof. Methods of use of the polymeric and pharmaceutical compositions for therapeutic and/or prophylactic benefits are disclosed herein. Examples of these methods include the treatment of hyperkalemia, such as hyperkalemia caused by renal failure and/or the use of hyperkalemia causing drugs.Type: GrantFiled: October 13, 2004Date of Patent: February 10, 2009Assignee: Relypsa, Inc.Inventors: Dominique Charmot, Han Ting Chang, Gerrit Klaerner, Michael James Cope, Mingjun Liu, Futian Liu, Jerry Buysse, Eric Connor, Tony Kwok-Kong Mong, Jun Shao, Deidre Madsen
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Patent number: 7378109Abstract: The present invention discloses compositions, comprising a lipid-polymer matrix to mask the bitter or unpleasant taste of the medicament. The lipid or a blend of lipids, are used in combination with the pH dependent polymer where the said polymer is acid soluble or swellable The process for the preparation of taste masked pharmaceutical compositions of the bitter drugs comprising the said lipid-polymer compositions are disclosed. The concomitant use of the acid soluble polymer, which remains collapsed at the pH of saliva, inhibits the release of drug at that pH and hence they further help in bitterness inhibition. The said compositions deliver substantial amount of the bitter drug immediately at the gastric pH with improved palatability.Type: GrantFiled: December 23, 2004Date of Patent: May 27, 2008Assignee: Council of Scientific and Industrial ResearchInventors: Anupa R. Menjoge, Mohan G. Kulkarni
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Patent number: 7067116Abstract: Physiologically acceptable films, including edible films, are disclosed. The films include a water soluble film-forming polymer, such as pullulan, and a taste masked pharmaceutically active agent, such as dextromethorphan. The taste masking agent is preferably a sulfonated polymer ion exchange resin comprising polystyrene cross-linked with divinylbenzene, such as AMBERLITE. Methods for producing the films are also disclosed.Type: GrantFiled: March 23, 2000Date of Patent: June 27, 2006Assignee: Warner-Lambert Company LLCInventors: William S. Bess, Neema Kulkarni, Suhas H. Ambike, Michael P. Ramsay
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Patent number: 6706285Abstract: Disclosed are an enteric coated formulation of a benzimidazole derivative comprising a core and a film of an enteric coating agent on the surface thereof, the core containing a complex of the benzimidazole derivative and an ion-exchange resin, and the enteric coating agent having the degree of substitution by an acidic group of less than 30%, and a method for preparation thereof.Type: GrantFiled: July 20, 1999Date of Patent: March 16, 2004Assignee: Hanms Pharm. Co., Ltd.Inventor: Jong Soo Woo
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Patent number: 6685962Abstract: Pharmaceutical gastroretentive drug delivery systems for the controlled release of an active agent in the gastrointestinal tract are disclosed, which comprise: (a) a single- or multi-layered matrix comprising a polymer that does not retain in the stomach more than a conventional dosage form selected from (1) degradable polymers that may be hydrophilic polymers not instantly soluble in gastric fluids, enteric polymers substantially insoluble at pH less than 5.5 and/or hydrophobic polymers and mixtures thereof; (2) non-degradable polymers; and any mixtures of (1) and (2); (b) a continuous or non-continuous membrane comprising at least one polymer having a substantial mechanical strength; and (c) a drug; wherein the matrix when affixed or attached to the membrane prevents evacuation from the stomach of the delivery system for a period of time of from about 3 to about 24 hours.Type: GrantFiled: May 29, 2002Date of Patent: February 3, 2004Assignee: Yissum Research Development Company Of The Hebrew University Of JerusalemInventors: Michael Friedman, Eytan Klausner, Eran Lavy, Amnon Hoffman
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Patent number: 6194000Abstract: Disclosed is a method for the therapeutic treatment of pain related to wind up in a human or animal. The method of the invention is practiced by administering to the subject an effective amount of an analgesic pharmaceutical composition which includes a NMDA receptor antagonist in an immediate release form combined with an NMDA receptor antagonist in a sustained release form. The immediate release form and sustained release forn are present in sufficient amounts to diminsh or abolish wind up.Type: GrantFiled: April 17, 1998Date of Patent: February 27, 2001Assignee: F.H. Faulding & Co., LimitedInventors: Ian Keith Smith, Grant Wayne Heinicke
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Patent number: 6066336Abstract: An improved cholesterol-lowering tablet is manufactured by blending tablet grade cholestyramine with an appropriate amount of lubricant and directly compressing into elongated tablets having a specified thickness. These inner tablets are successfully film coated using aqueous film-coating processes without tablet preheating and by simultaneous spray-drying.Type: GrantFiled: August 11, 1998Date of Patent: May 23, 2000Assignee: Bristol-Myers Squibb CompanyInventors: Ismat Ullah, Gary James Wiley
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Patent number: 5980882Abstract: The invention provides a pharmaceutical composition comprising a drug-resin complex and a chelating agent in which the composition is in the form of a solid or a gel. The invention also provides a method of making such a composition and a method for improving the stability of a pharmaceutical composition.Type: GrantFiled: April 16, 1997Date of Patent: November 9, 1999Assignee: Medeva Pharmaceuticals ManufacturingInventor: Martin L. Eichman
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Patent number: 5935604Abstract: The present invention provides a nasal drug delivery composition comprising nicotine or a pharmacologically-acceptable salt or derivative thereof wherein the composition is adapted to delivery a pulse of nicotine for rapid absorption and a controlled release of nicotine for subsequent sustained absorption. The controlled release phase can be achieved by providing an ion-exchange material which will form a complex with the nicotine. The ion-exchange material may be a polymeric material such as a polysaccharide, or may be in the form of bioadhesive ion-exchange microspheres. The pulse release can be achieved by overloading the ion-exchange material with nicotine so that the composition contains some excess nicotine for immediate release and absorption. Alternatively, some nicotine may be associated with a non ion-exchange material which will release the nicotine immediately on contact with the nasal mucosa, for example non-ion-exchange bioadhesive microspheres.Type: GrantFiled: July 1, 1996Date of Patent: August 10, 1999Assignee: Danbiosyst UK LimitedInventor: Lisbeth Illum
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Patent number: 5840339Abstract: A salt comprising the reaction product of nicotinic acid and an anion exchange resin having a degree of crosslinking with divinylbenzene of less than 4%. These salts are useful in reducing blood cholesterol levels.Type: GrantFiled: September 3, 1992Date of Patent: November 24, 1998Inventor: Robert Kunin
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Patent number: 5837226Abstract: A sustained release drug delivery composition and a method of making same are provided which comprises microspheres containing a pharmaceutically active agent, a core of a ion-exchange resin and a polymeric coating completely surrounding the core wherein the coating is water-insoluble and hydrolytically stable in physiological environments. The coating is non-erodible in physiological environments and is characterized by a diffusion constant suitable for the pharmaceutical agent to diffuse from the core to an aqueous environment at a predetermined release rate.Type: GrantFiled: September 19, 1995Date of Patent: November 17, 1998Assignee: Vitaphore Corporation C/O Integra Lifesciences Corp.Inventors: Lisa B. Jungherr, Thomas B. Ottoboni
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Patent number: 5718920Abstract: A method and particles for binding monovalent cations, each of the particles having a nucleus containing a cation exchange material, and applied thereon, a coating comprising a membrane being permeable for monovalent cations, in particular sodium, potassium, ammonium and hydrogen ions. The membrane is essentially not disintegrated during passage through the intestinal tract of humans or animals and wherein the membrane is more permeable for monovalent cations than for bi- or higher valent cations.Type: GrantFiled: May 28, 1996Date of Patent: February 17, 1998Assignee: Salternate B.V.Inventor: Annette Notenbomer
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Patent number: 5688510Abstract: A process for producing a pharmaceutical composition is disclosed. In the process, 1 part by weight of a physiologically inert powdery additive, 0.001-1 part by weight of a macromolecular additive per part by weight of said insert powdery additive, and at least one drug substance are used as ingredients and processed en bloc by means of a multi-screw extruder. The drug substance used in the process can be selected from the following group: subliminable drug, volatile drug, drug hydrolyzable in the presence of water, drug which develops whiskers, and hygroscopic or deliquescent drug. The process confers increased physicochemical stability to the pharmaceutical composition and the drug substance contained therein.Type: GrantFiled: May 17, 1996Date of Patent: November 18, 1997Assignee: Nippon Shinyaku CO. LTD.Inventors: Kouichi Nakamichi, Shougo Izumi, Hiroyuki Yasuura
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Patent number: 5654004Abstract: An oral pharmaceutical preparation releasable in the lower digestive tract, characterized by having a double-coated structure wherein a solid drug having a core containing an active ingredient is covered with both an inner coat made of a cationic polymer and an outer coat made of an anionic polymer.Type: GrantFiled: May 5, 1995Date of Patent: August 5, 1997Assignee: Hisamitsu Pharmaceutical Co., Inc.Inventors: Minenobu Okayama, Masaru Nakanishi
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Patent number: 5442008Abstract: Stabilized medicinal substances, a process for the preparation thereof, and stable medicinal formulationsStabilized compounds of the formula I ##STR1## in which R, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 have the stated meanings, and a process for the preparation thereof, are described. The stabilized compounds are suitable for the manufacture of medicinal formulations. The formula I compounds are stabilized by a polymeric protective coating before being compressed in tablet form.Type: GrantFiled: February 10, 1994Date of Patent: August 15, 1995Assignee: Hoechst AktiengesellschaftInventors: Werner Fulberth, Richard Leeb, Manfred Radau, Willi Stammberger
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Patent number: 5286493Abstract: A stabilized solid controlled release dosage form having a coating derived from an aqueous dispersion of an acrylic polymer is obtained by overcoating a substrate including a therapeutically active with an aqueous dispersion of the plasticized acrylic polymer and then curing the coated substrate at a temperature above the glass transition temperature of the plasticized acrylic polymer, until the coated dosage form attains a stabilized dissolution profile substantially unaffected by exposure to storage conditions of elevated temperature and/or elevated relative humidity.Type: GrantFiled: January 27, 1992Date of Patent: February 15, 1994Assignee: Euroceltique, S.A.Inventors: Benjamin Oshlack, Mark Chasin, Frank Pedi, Jr.
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Patent number: 5271946Abstract: Azelastine-containing pharmaceutical compositions which provide controlled release of the active substance using a sustained release component. The compositions contain azelastine or a physiologically acceptable salt of azelastine, together with 0.001 to 800 parts of sustained release component for each part by weight of azelastine (calculated as base) and the release rate of azelastine is between 0.05 and 5 mg per hour.Type: GrantFiled: April 10, 1992Date of Patent: December 21, 1993Assignee: Asta Pharma AktiengesellschaftInventor: Helmut Hettche
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Patent number: 5004614Abstract: Controlled release devices having a core including an active agent and an outer coating which is substantially impermeable to the entrance of an environmental fluid and substantially impermeable to the release of the active agent during a dispensing period allow the controlled release of the active agent through an orifice in the outer coating.Type: GrantFiled: August 25, 1989Date of Patent: April 2, 1991Assignee: Forum Chemicals Ltd.Inventor: John N. Staniforth
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Patent number: 4999189Abstract: Stable sustained release wax- and polymer-coated drug-ion exchange resin complexes especially useful in preparing oral suspensions are disclosed.Type: GrantFiled: November 14, 1988Date of Patent: March 12, 1991Assignee: Schering CorporationInventors: Patricia W. Kogan, Edward M. Rudnic, Joel A. Sequeira, Imtiaz A. Chaudry
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Patent number: 4996047Abstract: Disclosed are oral pharmaceutical preparations which comprise a pharmacologically active drug bound to small particles of an ion-exchange resin to provide a drug-resin complex having a drug content above a specified value. The drug-resin complex is subsequently coated with a water-permeable diffusion barrier coating that is insoluble in gastrointestinal fluids thereby providing a controllable sustained release of drug under conditions encountered in the gastrointestinal tract.Type: GrantFiled: November 2, 1988Date of Patent: February 26, 1991Assignee: Richardson-Vicks, Inc.Inventors: William J. Kelleher, Anthony E. Carpanzano
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Patent number: 4869908Abstract: Tablets containing nutritional and therapeutic substances in conjunction with dietrary fibre substances. The tablets can be formulated in two layers which separate the nutritional and therapeutic substances from the fibre.Type: GrantFiled: January 9, 1987Date of Patent: September 26, 1989Assignee: K.V. Pharmaceutical Co.Inventors: Mitchell I. Kirschner, William H. Dorow
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Patent number: 4762709Abstract: A formulation of a drug wherein the drug is present as a coated, drug-resin complex suspended in a liquid carrier which carrier also contains a second ionic component bearing the same charge as the coated complexed drug, the second ionic component being present as an uncoated, insoluble drug-resin complex.Type: GrantFiled: January 31, 1986Date of Patent: August 9, 1988Assignee: Pennwalt CorporationInventor: Jerry L. Sheumaker
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Patent number: 4663163Abstract: A modified polysaccharide material which comprises: (1) polysaccharide covalently bonded to a synthetic polymer; (2) the synthetic polymer being made from (a) a polymerizable compound which is capable of being covalently coupled directly or indirectly to said polysaccharide, and (b) one or more polymerizable compounds containing (i) an ionizable chemcial group, (ii) a chemical group capable of transformation to an ionizable chemical group, (iii) a chemical group capable of causing the covalent coupling of the compound (b) to an affinity ligand or a biologically active molecule or (iv) a hydrophobic compound.Type: GrantFiled: February 2, 1984Date of Patent: May 5, 1987Inventors: Kenneth C. Hou, Tung-Ping D. Liao