Patents Assigned to Edward Mendell Co., Inc.
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Patent number: 6521261Abstract: A microcrystalline cellulose-based excipient having improved compressibility, whether utilized in direct compression, dry granulation or wet granulation formulations, is disclosed. The excipient is an agglomerate of microcrystalline cellulose particles and from about 0.1% to about 20% silicon dioxide particles, by weight of the microcrystalline cellulose, wherein the microcrystalline cellulose and silicon dioxide are in intimate association with each other. The silicon dioxide utilized in the novel excipient has a particle size from about 1 nanometer to about 100 microns. Most preferably, the silicon dioxide is a grade of colloidal silicon dioxide.Type: GrantFiled: October 16, 2001Date of Patent: February 18, 2003Assignee: Edward Mendell Co., Inc.Inventors: Bob E. Sherwood, John H. Staniforth, Edward A. Hunter
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Patent number: 6471994Abstract: A microcrystalline cellulose-based excipient having improved compressibility, whether utilized in direct compression, dry granulation or wet granulation formulations, is disclosed. The excipient is an agglomerate of microcrystalline cellulose particles and from about 0.1% to about 20% silicon dioxide particles, by weight of microcrystalline cellulose, wherein the microcrystalline cellulose and silicon dioxide are in intimate association with each other. The silicon dioxide utilized in the novel excipient has a particle size from about 1 nanometer to about 100 microns. Most preferably, the silicon dioxide is a grade of colloidal silicon dioxide. An extra low moisture excipient is provided which exhibits improved compressibility as compared to conventional microcrystalline cellulose, while providing a moisture content of from about 0.5 to 2.5% LOD, preferably between about 0.5 and about 1.8%, more preferably between 0.8 and 1.5%, and most preferably between about 0.8 and about 1.2 %.Type: GrantFiled: August 27, 1999Date of Patent: October 29, 2002Assignee: Edward Mendell Co., Inc.Inventors: John N. Staniforth, Bob E. Sherwood, Edward A. Hunter
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Patent number: 6395303Abstract: The present invention provides an improved process for the preparation of a agglomerated solid dosage form, comprising preparing an aqueous slurry of microcrystalline cellulose and a microcrystalline cellulose compressibility augmenting agent and an active agent. The augmenting agent is capable of physically restricting the proximity of the interface between adjacent cellulose surfaces and/or inhibiting interactions between adjacent cellulose surfaces, for example, via the creation of a hydrophobic boundary at cellulose surfaces. The resulting aqueous slurry is dried in a manner which inhibits quasi-hornification, thereby obtaining an agglomerated material which is directly compressible into a solid dosage form.Type: GrantFiled: June 4, 1997Date of Patent: May 28, 2002Assignee: Edward Mendell Co., Inc.Inventors: John N. Staniforth, Bob E. Sherwood, Edward A. Hunter, Clifford M. Davidson
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Patent number: 6391337Abstract: Direct compressed solid pharmaceutical dosage forms containing: a) from about 40 to about 95% by weight acetaminophen; b) from about 1 to about 60% by weight of a direct compression vehicle comprising microcrystalline cellulose; and c) from about 0.01 to about 4.0% by weight of a pharmaceutically-acceptable lubricant are disclosed. The acetaminophen and direct compression vehicle are combined under high shear conditions which are sufficient to transform acetaminophen and direct compression vehicle into a homogenous granulate without degradation. In preferred aspects of the invention, the lubricant is also combined with the acetaminophen and direct compression vehicle under high shear conditions. Methods of preparing the directly compressed solid pharmaceutical dosage forms and methods of treatment with the dosage forms are also disclosed. The methods are particularly well suited for preparing directly compressed dosage forms containing high load (i.e.Type: GrantFiled: March 2, 2001Date of Patent: May 21, 2002Assignee: Edward Mendell Co., Inc.Inventors: Edward A. Hunter, Bob E. Sherwood, Joseph A. Zeleznik
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Patent number: 6358533Abstract: A microcrystalline cellulose-based excipient having improved compressibility, whether utilized in direct compression, dry granulation or wet granulation formulations, is disclosed. The excipient is an agglomerate of microcrystalline cellulose particles and from about 0.1% to about 20% silicon dioxide particles, by weight of the microcrystalline cellulose, wherein the microcrystalline cellulose and silicon dioxide are in intimate association with each other. The silicon dioxide utilized in the novel excipient has a particle size from about 1 nanometer to about 100 microns. Most preferably, the silicon dioxide is a grade of colloidal silicon dioxide.Type: GrantFiled: January 4, 2001Date of Patent: March 19, 2002Assignee: Edward Mendell, Co., Inc.Inventors: Bob E. Sherwood, John H. Staniforth, Edward A. Hunter
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Patent number: 6245356Abstract: Sustained release oral solid dosage forms comprising agglomerated particles of a therapeutically active medicament in amorphous form, a gelling agent, an ionizable gel strength enhancing agent and an inert diluent, as well as processes for preparing and using the same are disclosed. The sustained release oral solid dosage forms are useful in the treatment of hypertension in human patients.Type: GrantFiled: February 4, 2000Date of Patent: June 12, 2001Assignee: Edward Mendell Co., Inc.Inventor: Anand Baichwal
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Patent number: 6245355Abstract: Sustained release dosage forms of high dose insoluble drugs such as ibuprofen and methods for their manufacture are disclosed.Type: GrantFiled: October 19, 1999Date of Patent: June 12, 2001Assignee: Edward Mendell Co., Inc.Inventor: Anand R. Baichwal
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Patent number: 6217909Abstract: A microcrystalline cellulose-based excipient having improved compressibility, whether utilized in direct compression, dry granulation or wet granulation formulations, is disclosed. The excipient is an agglomerate of microcrystalline cellulose particles and from about 0.1% to about 20% silicon dioxide particles, by weight of the microcrystalline cellulose, wherein the microcrystalline cellulose and silicon dioxide are in intimate association with each other. The silicon dioxide utilized in the novel excipient has a particle size from about 1 nanometer to about 100 microns. Most preferably, the silicon dioxide is a grade of colloidal silicon dioxide.Type: GrantFiled: November 12, 1999Date of Patent: April 17, 2001Assignee: Edward Mendell Co., Inc.Inventors: Bob E. Sherwood, John H. Staniforth, Edward A. Hunter
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Patent number: 6217907Abstract: Direct compressed solid pharmaceutical dosage forms containing: a) from about 40 to about 95% by weight acetaminophen; b) from about 1 to about 60% by weight of a direct compression vehicle comprising microcrystalline cellulose; and c) from about 0.01 to about 4.0% by weight of a pharmaceutically-acceptable lubricant are disclosed. The acetaminophen and direct compression vehicle are combined under high shear conditions which are sufficient to transform acetaminophen and direct compression vehicle into a homogenous granulate without degradation. In preferred aspects of the invention, the lubricant is also combined with the acetaminophen and direct compression vehicle under high shear conditions. Methods of preparing the directly compressed solid pharmaceutical dosage forms and methods of treatment with the dosage forms are also disclosed. The methods are particularly well suited for preparing directly compressed dosage forms containing high load (i.e.Type: GrantFiled: May 13, 1999Date of Patent: April 17, 2001Assignee: Edward Mendell Co., Inc.Inventors: Edward A. Hunter, Bob E. Sherwood, Joseph A. Zeleznik
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Patent number: 6136343Abstract: A sustained release pharmaceutical formulation includes a sustained release excipient including a gelling agent, an inert pharmaceutical diluent, an optional cationic cross-linking agent, and a medicament having moderate to poor solubility is disclosed. In certain embodiments, the sustained release excipient is granulated with a solution or suspension of a hydrophobic polymer in an amount effective to slow the hydration of the gelling agent when the formulation is exposed to an environmental fluid. In another embodiment, the tablet is coated with a hydrophobic polymer.Type: GrantFiled: December 8, 1998Date of Patent: October 24, 2000Assignee: Edward Mendell Co., Inc.Inventor: Anand R. Baichwal
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Patent number: 6106865Abstract: A composition, comprising (a) microcrystalline cellulose; and (b) a compressibility augmenting agent which (i) physically restricts the proximity of the interface between adjacent cellulose surfaces; or (ii) inhibits interactions between adjacent cellulose surfaces; or (iii) accomplishes both (i) and (ii) above, is disclosed. The composition is in the form of agglomerated particles of microcrystalline cellulose and the compressibility augmenting agent in intimate association with each other.Type: GrantFiled: March 10, 1998Date of Patent: August 22, 2000Assignee: Edward Mendell Co., Inc.Inventors: John N. Staniforth, Edward A. Hunter, Bob E. Sherwood
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Patent number: 6103219Abstract: A microcrystalline cellulose-based excipient having improved compressibility, whether utilized in direct compression, dry granulation or wet granulation formulations, is disclosed. The excipient is an agglomerate of microcrystalline cellulose particles and from about 0.1% to about 20% silicon dioxide particles, by weight of the microcrystalline cellulose, wherein the microcrystalline cellulose and silicon dioxide are in intimate association with each other. The silicon dioxide utilized in the novel excipient has a particle size from about 1 nanometer to about 100 microns. Most preferably, the silicon dioxide is a grade of colloidal silicon dioxide.Type: GrantFiled: December 17, 1997Date of Patent: August 15, 2000Assignee: Edward Mendell Co., Inc.Inventors: Bob E. Sherwood, John H. Staniforth, Edward A. Hunter
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Patent number: 6093420Abstract: Sustained release dosage forms of high dose insoluble drugs such as ibuprofen and methods for their manufacture are disclosed.Type: GrantFiled: July 8, 1997Date of Patent: July 25, 2000Assignee: Edward Mendell Co., Inc.Inventor: Anand R. Baichwal
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Patent number: 6056977Abstract: This invention is directed to a novel solid matrixed controlled release, oral dosage form where the dosage form contains a therapeutically effective amount of a sulfonylurea or a salt or derivative thereof in the matrix. Further, the use of an aqueous alkalizing medium affords substantially complete bioavailability of the drug from the matrix of the tablet. The core tablets may optionally be coated with a coating material in the range of 2% to 10% with an enteric material or with a water insoluble material like ethyl cellulose.Type: GrantFiled: October 15, 1997Date of Patent: May 2, 2000Assignee: Edward Mendell Co., Inc.Inventors: Dileep Bhagwat, Donald Diehl, II, Anand R. Baichwal
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Patent number: 6048548Abstract: Sustained release oral solid dosage forms comprising agglomerated particles of a therapeutically active medicament in amorphous form, a gelling agent, an ionizable gel strength enhancing agent and an inert diluent, as well as processes for preparing and using the same are disclosed. The sustained release oral solid dosage forms are useful in the treatment of hypertension in human patients.Type: GrantFiled: June 29, 1998Date of Patent: April 11, 2000Assignee: Edward Mendell Co., Inc.Inventor: Anand Baichwal
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Patent number: 6039980Abstract: A sustained-release formulation for use in oral solid dosage forms includes from about 10 to about 40 percent or more by weight galactomannan gum; from about 1 to about 20 percent by weight of an ionizable gel strength enhancing agent and an inert pharmaceutical filler.Type: GrantFiled: July 29, 1998Date of Patent: March 21, 2000Assignee: Edward Mendell Co., Inc.Inventor: Anand R. Baichwal
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Patent number: 5965166Abstract: Direct compressed solid pharmaceutical dosage forms containing:a) from about 40 to about 95% by weight acetaminophen;b) from about 1 to about 60% by weight of a direct compression vehicle comprising microcrystalline cellulose; andc) from about 0.01 to about 4.0% by weight of a pharmaceutically-acceptable lubricant are disclosed. The acetaminophen and direct compression vehicle are combined under high shear conditions which are sufficient to transform acetaminophen and direct compression vehicle into a homogenous granulate without degradation. In preferred aspects of the invention, the lubricant is also combined with the acetaminophen and direct compression vehicle under high shear conditions. Methods of preparing the directly compressed solid pharmaceutical dosage forms and methods of treatment with the dosage forms are also disclosed. The methods are particularly well suited for preparing directly compressed dosage forms containing high load (i.e.Type: GrantFiled: November 5, 1997Date of Patent: October 12, 1999Assignee: Edward Mendell Co., Inc.Inventors: Edward A. Hunter, Joseph A. Zeleznik, Bob E. Sherwood
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Patent number: 5962009Abstract: Controlled release powder insufflation formulations are disclosed. The powder formulation includes cohesive composites of particles containing a medicament and a controlled release carrier which preferably includes one or more polysaccharide gums of natural origin.Type: GrantFiled: December 30, 1996Date of Patent: October 5, 1999Assignee: Edward Mendell Co., Inc.Inventors: Anand Baichwal, John N. Staniforth
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Patent number: 5958456Abstract: A sustained release pharmaceutical formulation and methods of making and using the same are provided. The sustained release pharmaceutical formulation includes a sustained release excipient including a gelling agent, an inert pharmaceutical diluent, an optional hydrophobic material and/or hydrophobic coating, and a medicament for sustained oral administration.Type: GrantFiled: July 1, 1997Date of Patent: September 28, 1999Assignee: Edward Mendell Co., Inc.Inventors: Anand Baichwal, Troy W. McCall
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Patent number: 5948438Abstract: An oral solid dosage form, comprising a compressed tablet including an excipient comprising (a) microcrystalline cellulose; and (b) a compressibility augmenting agent which (I) physically restricts the proximity of the interface between adjacent cellulose surfaces (e.g., silicon dioxide); or (ii) inhibits interactions between adjacent cellulose surfaces (e.g., sodium lauryl sulfate); or (iii) accomplishes both (i) and (ii) above; together with an active agent, is disclosed which provides improved disintegration and/or absorptivity to the oral solid dosage form when orally administered to human patients. The excipient comprises agglomerated particles of said microcrystalline cellulose and said compressibility augmenting agent in intimate association with each other.Type: GrantFiled: June 4, 1997Date of Patent: September 7, 1999Assignee: Edward Mendell Co., Inc.Inventors: John N. Staniforth, Bob E. Sherwood, Edward A. Hunter