Patents Assigned to Edward Mendell Co., Inc.
  • Patent number: 6521261
    Abstract: 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: Grant
    Filed: October 16, 2001
    Date of Patent: February 18, 2003
    Assignee: Edward Mendell Co., Inc.
    Inventors: Bob E. Sherwood, John H. Staniforth, Edward A. Hunter
  • Patent number: 6471994
    Abstract: 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: Grant
    Filed: August 27, 1999
    Date of Patent: October 29, 2002
    Assignee: Edward Mendell Co., Inc.
    Inventors: John N. Staniforth, Bob E. Sherwood, Edward A. Hunter
  • Patent number: 6395303
    Abstract: 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: Grant
    Filed: June 4, 1997
    Date of Patent: May 28, 2002
    Assignee: Edward Mendell Co., Inc.
    Inventors: John N. Staniforth, Bob E. Sherwood, Edward A. Hunter, Clifford M. Davidson
  • Patent number: 6391337
    Abstract: 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: Grant
    Filed: March 2, 2001
    Date of Patent: May 21, 2002
    Assignee: Edward Mendell Co., Inc.
    Inventors: Edward A. Hunter, Bob E. Sherwood, Joseph A. Zeleznik
  • Patent number: 6358533
    Abstract: 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: Grant
    Filed: January 4, 2001
    Date of Patent: March 19, 2002
    Assignee: Edward Mendell, Co., Inc.
    Inventors: Bob E. Sherwood, John H. Staniforth, Edward A. Hunter
  • Patent number: 6245356
    Abstract: 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: Grant
    Filed: February 4, 2000
    Date of Patent: June 12, 2001
    Assignee: Edward Mendell Co., Inc.
    Inventor: Anand Baichwal
  • Patent number: 6245355
    Abstract: Sustained release dosage forms of high dose insoluble drugs such as ibuprofen and methods for their manufacture are disclosed.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: June 12, 2001
    Assignee: Edward Mendell Co., Inc.
    Inventor: Anand R. Baichwal
  • Patent number: 6217909
    Abstract: 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: Grant
    Filed: November 12, 1999
    Date of Patent: April 17, 2001
    Assignee: Edward Mendell Co., Inc.
    Inventors: Bob E. Sherwood, John H. Staniforth, Edward A. Hunter
  • Patent number: 6217907
    Abstract: 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: Grant
    Filed: May 13, 1999
    Date of Patent: April 17, 2001
    Assignee: Edward Mendell Co., Inc.
    Inventors: Edward A. Hunter, Bob E. Sherwood, Joseph A. Zeleznik
  • Patent number: 6136343
    Abstract: 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: Grant
    Filed: December 8, 1998
    Date of Patent: October 24, 2000
    Assignee: Edward Mendell Co., Inc.
    Inventor: Anand R. Baichwal
  • Patent number: 6106865
    Abstract: 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: Grant
    Filed: March 10, 1998
    Date of Patent: August 22, 2000
    Assignee: Edward Mendell Co., Inc.
    Inventors: John N. Staniforth, Edward A. Hunter, Bob E. Sherwood
  • Patent number: 6103219
    Abstract: 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: Grant
    Filed: December 17, 1997
    Date of Patent: August 15, 2000
    Assignee: Edward Mendell Co., Inc.
    Inventors: Bob E. Sherwood, John H. Staniforth, Edward A. Hunter
  • Patent number: 6093420
    Abstract: Sustained release dosage forms of high dose insoluble drugs such as ibuprofen and methods for their manufacture are disclosed.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: July 25, 2000
    Assignee: Edward Mendell Co., Inc.
    Inventor: Anand R. Baichwal
  • Patent number: 6056977
    Abstract: 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: Grant
    Filed: October 15, 1997
    Date of Patent: May 2, 2000
    Assignee: Edward Mendell Co., Inc.
    Inventors: Dileep Bhagwat, Donald Diehl, II, Anand R. Baichwal
  • Patent number: 6048548
    Abstract: 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: Grant
    Filed: June 29, 1998
    Date of Patent: April 11, 2000
    Assignee: Edward Mendell Co., Inc.
    Inventor: Anand Baichwal
  • Patent number: 6039980
    Abstract: 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: Grant
    Filed: July 29, 1998
    Date of Patent: March 21, 2000
    Assignee: Edward Mendell Co., Inc.
    Inventor: Anand R. Baichwal
  • Patent number: 5965166
    Abstract: 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: Grant
    Filed: November 5, 1997
    Date of Patent: October 12, 1999
    Assignee: Edward Mendell Co., Inc.
    Inventors: Edward A. Hunter, Joseph A. Zeleznik, Bob E. Sherwood
  • Patent number: 5962009
    Abstract: 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: Grant
    Filed: December 30, 1996
    Date of Patent: October 5, 1999
    Assignee: Edward Mendell Co., Inc.
    Inventors: Anand Baichwal, John N. Staniforth
  • Patent number: 5958456
    Abstract: 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: Grant
    Filed: July 1, 1997
    Date of Patent: September 28, 1999
    Assignee: Edward Mendell Co., Inc.
    Inventors: Anand Baichwal, Troy W. McCall
  • Patent number: 5948438
    Abstract: 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: Grant
    Filed: June 4, 1997
    Date of Patent: September 7, 1999
    Assignee: Edward Mendell Co., Inc.
    Inventors: John N. Staniforth, Bob E. Sherwood, Edward A. Hunter