Patents by Inventor Edward A. Hunter

Edward A. Hunter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20020197310
    Abstract: Direct compressed solid pharmaceutical dosage forms containing:
    Type: Application
    Filed: April 1, 2002
    Publication date: December 26, 2002
    Inventors: Edward A. Hunter, Bob E. Sherwood, Joseph A. Zeleznik
  • Publication number: 20020182259
    Abstract: The present invention provides an improved process for the preparation of a agglomerated solid dosage form, comprising: (1) preparing an aqueous slurry of (a) microcrystalline cellulose; (b) a microcrystalline cellulose compressibility augmenting agent which (i) physically restricts the proximity of the interface between adjacent cellulose surfaces; (ii) inhibits interactions between adjacent cellulose surfaces, for example, via the creation of a hydrophobic boundary at cellulose surfaces; or (iii) accomplishes both (i) and (ii) above; and (c) an active agent; (2) thereafter drying the resultant aqueous slurry in a manner which inhibits quasi-hornification, thereby obtaining an agglomerated material which is directly compressible into a solid dosage form.
    Type: Application
    Filed: December 13, 2001
    Publication date: December 5, 2002
    Inventors: John N. Staniforth, Bob E. Sherwood, Edward A. Hunter, Clifford M. Davidson
  • 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
  • Publication number: 20020142032
    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: Application
    Filed: October 16, 2001
    Publication date: October 3, 2002
    Inventors: Bob E. Sherwood, Edward A. Hunter, John H. Staniforth
  • 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
  • Publication number: 20010033299
    Abstract: A system and method of assembling an application for processing image or image-derived data is disclosed. The system includes a base operator configured to interface with one or more derivative operator classes, each operator class including an operator object for executing a processing function on the image or image-derived data. A base multiport node class is provided, which is configured to provide a multiport node for each operator object. The multiport nodes instantiates a pluggable operator for connecting the multiport nodes together at runtime according to user-defined parameters. The connection of multiport nodes implements the processing functions of the operator objects to execute the application.
    Type: Application
    Filed: January 19, 2001
    Publication date: October 25, 2001
    Inventors: W. Scott Callaway, Edward A. Hunter, Jeffrey H. Price
  • Publication number: 20010014353
    Abstract: Direct compressed solid pharmaceutical dosage forms containing:
    Type: Application
    Filed: March 2, 2001
    Publication date: August 16, 2001
    Inventors: Edward A. Hunter, Bob E. Sherwood, Joseph A. Zeleznik
  • Publication number: 20010001664
    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: Application
    Filed: January 4, 2001
    Publication date: May 24, 2001
    Inventors: Bob E. Sherwood, John H. Staniforth, Edward A. Hunter
  • 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: 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: 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: 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
  • Patent number: 5866166
    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: June 10, 1996
    Date of Patent: February 2, 1999
    Assignee: Edward Mendell Co., Inc.
    Inventors: John N. Staniforth, Bob E. Sherwood, Edward A. Hunter
  • Patent number: 5858412
    Abstract: Sustained release formulations include an augmented microcrystalline cellulose, an active agent, and a sustained release carrier and methods for making same are disclosed.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: January 12, 1999
    Assignee: Edward Mendell Co., Inc.
    Inventors: John N. Staniforth, Bob E. Sherwood, Edward A. Hunter
  • Patent number: 5842427
    Abstract: Apparatus suitable for mounting on a tractor, and capable of providing opposed movement to a pair of cooperating implements suitable for digging or lifting. The apparatus has a frame with an upper central region and two laterally spaced lower regions, and two movable arms, each capable of holding one of the implements. Each arm has an inner end pivoted to the frame at one of the lower regions by a pivot which restricts movement of the arm, relative to the frame, to an inclined pivot plane, the pivot planes being situated to both slope downwardly and inwardly and meet at a line of intersection which is below and symmetrically between the pivots. A linkage arrangement is provided connecting the central upper region of the frame to each arm, and power cylinders are provided for moving the arms in their inclined pivot planes.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: December 1, 1998
    Inventors: James Edward Hunter, Ronald Harold Richardson
  • Patent number: 5741524
    Abstract: Sustained release formulations include an augmented microcrystalline cellulose, an active agent, and a sustained release carrier and methods for making same are disclosed.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: April 21, 1998
    Assignee: Edward Mendell Co., Inc.
    Inventors: John N. Staniforth, Bob E. Sherwood, Edward A. Hunter