Patents by Inventor Michael G. Vachon
Michael G. Vachon 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).
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Publication number: 20110244032Abstract: Rapidly dispersing solid dry therapeutic dosage form comprised of a water insoluble compound existing as a nanometer or micrometer particulate solid which is surface stabilized by the presence of at least one phospholipid, the particulate solid being dispersed throughout a bulking matrix. When the dosage form is introduced into an aqueous environment the bulking matrix is substantially completely dissolves within less than 2 minutes thereby releasing the water insoluble particulate solid in an unaggregated and/or unagglomerated state. The matrix is composed of a water insoluble substance or therapeutically useful water insoluble or poorly water soluble compound, a phospholipid and optionally also at least one non-ionic, anionic, cationic, or amphipathic surfactant, together with a matrix or bulking agent and if needed a release agent. The volume weighted mean particle size of the water insoluble particle is 5 micrometers or less.Type: ApplicationFiled: May 10, 2011Publication date: October 6, 2011Applicant: Jagotec AGInventors: Indu Parikh, Awadhesh K. Mishra, Robert Donga, Michael G. Vachon
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Patent number: 7939105Abstract: Rapidly dispersing solid dry therapeutic dosage form comprised of a water insoluble compound existing as a nanometer or micrometer particulate solid which is surface stabilized by the presence of at least one phospholipid, the particulate solid being dispersed throughout a bulking matrix. When the dosage form is introduced into an aqueous environment the bulking matrix is substantially completely dissolves within less than 2 minutes thereby releasing the water insoluble particulate solid in an unaggregated and/or unagglomerated state. The matrix is composed of a water insoluble substance or therapeutically useful water insoluble or poorly water soluble compound, a phospholipid and optionally also at least one non-ionic, anionic, cationic or amphipathic surfactant, together with a matrix or bulking agent and if needed a release agent. The volume weighted mean particle size of the water insoluble particle is 5 micrometers or less.Type: GrantFiled: November 19, 1999Date of Patent: May 10, 2011Assignee: Jagotec AGInventors: Indu Parikh, Awadhesh K. Mishra, Robert Donga, Michael G. Vachon
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Patent number: 7939106Abstract: Rapidly dispersing solid dry therapeutic dosage form comprised of a water insoluble compound existing as a nanometer or micrometer particulate solid which is surface stabilized by the presence of at least one phospholipid, the particulate solid being dispersed throughout a bulking matrix. When the dosage form is introduced into an aqueous environment the bulking matrix is substantially completely dissolves within less than 2 minutes thereby releasing the water insoluble particulate solid in an unaggregated and/or unagglomerated state. The matrix is composed of a water insoluble substance or therapeutically useful water insoluble or poorly water soluble compound, a phospholipid and optionally also at least one non-ionic, anionic, cationic, or amphipathic surfactant, together with a matrix or bulking agent and if needed a release agent. The volume weighted mean particle size of the water insoluble particle is 5 micrometers or less.Type: GrantFiled: May 23, 2003Date of Patent: May 10, 2011Assignee: Jagotec AGInventors: Indu Parikh, Awadhesh K. Mishra, Robert Donga, Michael G. Vachon
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Patent number: 7097849Abstract: Irritation upon injection of a formulation containing propofol is reduced or substantially eliminated by administering a stable, sterile, and antimicrobial aqueous dispersion comprising a water-insoluble microdroplet matrix of mean diameter from about 50 nm to about 1000 nm consisting essentially of about 1% to about 15% of propofol, up to about 7% of a propofol-soluble diluent, and about 0.8% to about 4% of a surface stabilizing amphiphilic agent. The aqueous phase includes a pharmaceutically acceptable water-soluble polyhydroxy tonicity modifier. The propofol-containing dispersion is devoid of additional bactericidal or bacteriostatic preservative agents.Type: GrantFiled: August 18, 1999Date of Patent: August 29, 2006Assignee: Jagotec AGInventors: Awadhesh K. Mishra, Gary W. Pace, Michael G. Vachon
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Patent number: 7041705Abstract: Irritation upon injection of a formulation containing propofol is reduced or substantially eliminated by administering a stable, sterile, and antimicrobial aqueous dispersion comprising a water-insoluble microdroplet matrix of mean diameter from about 50 nm to about 1000 nm consisting essentially of about 1% to about 15% of propofol, up to about 7% of a propofol-soluble diluent, and about 0.8% to about 4% of a surface stabilizing amphiphilic aent. The aqueous phase includes a pharmaceutically acceptable water-soluble polyhydroxy tonicity modifier. The propofol-containing dispersion is devoid of additional bactericidal or bacteriostatic preservative agents.Type: GrantFiled: March 26, 2001Date of Patent: May 9, 2006Assignee: Jagotec AGInventors: Awadhesh K. Mishra, Gary W. Pace, Michael G Vachon
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Patent number: 6726919Abstract: A sterile, injectable homogenized dispersion of micromatrices or microdroplets having a mean diameter from about 50 nm to about 1000 nm comprising about 1% to about 7.5% of propofol, about 1% to about 8% of a propofol-soluble diluent, and about 0.67% to about 5% of a surface stabilizing amphiphilic agent suspended in an aqueous medium containing a synergetic quantity of antimicrobial agent and a tonicity modifying amount of a pharmaceutically acceptable water-soluble hydroxyl-group-containing excipient, wherein the ratio of propofol to diluent is in the range of about 0.25 to about 7.5 while the ratio of propofol to amphiphilic agent is in the range from about 0.4 to about 1.5, and wherein the viscosity of the dispersion is in the range of 1.1 to 8 cps, processes for the formation of the dispersion, and methods of use are disclosed.Type: GrantFiled: June 14, 2001Date of Patent: April 27, 2004Assignee: RTP Pharma, Inc.Inventors: Gary W. Pace, Michael G. Vachon, Awadesh K. Mishra, Robert A. Snow
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Publication number: 20030206949Abstract: Rapidly dispersing solid dry therapeutic dosage form comprised of a water insoluble compound existing as a nanometer or micrometer particulate solid which is surface stabilized by the presence of at least one phospholipid, the particulate solid being dispersed throughout a bulking matrix. When the dosage form is introduced into an aqueous environment the bulking matrix is substantially completely dissolves within less than 2 minutes thereby releasing the water insoluble particulate solid in an unaggregated and/or unagglomerated state. The matrix is composed of a water insoluble substance or therapeutically useful water insoluble or poorly water soluble compound, a phospholipid and optionally also at least one non-ionic, anionic, cationic, or amphipathic surfactant, together with a matrix or bulking agent and if needed a release agent. The volume weighted mean particle size of the water insoluble particle is 5 micrometers or less.Type: ApplicationFiled: May 23, 2003Publication date: November 6, 2003Applicant: SkyePharma Canada Inc.Inventors: Indu Parikh, Awadhesh K. Mishra, Robert Donga, Michael G. Vachon
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Publication number: 20030165544Abstract: It was found that certain propofol compositions, prepared as an injectable aqueous dispersion of a water-insoluble matrix consisting of propofol and propofol-soluble agents, were capable of substantially limiting or inhibiting the growth of certain microorganisms and did not display the incidence of irritation at the injection site as evidenced by the in-vivo experiments.Type: ApplicationFiled: August 18, 1999Publication date: September 4, 2003Inventors: AWADHESH K. MISHRA, GARY W. PACE, MICHAEL G. VACHON
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Publication number: 20020106403Abstract: Rapidly dispersing solid dry therapeutic dosage form comprised of a water insoluble compound existing as a nanometer or micrometer particulate solid which is surface stabilized by the presence of at least one phospholipid, the particulate solid being dispersed throughout a bulking matrix. When the dosage form is introduced into an aqueous environment the bulking matrix is substantially completely dissolves within less than 2 minutes thereby releasing the water insoluble particulate solid in an unaggregated and/or unagglomerated state. The matrix is composed of a water insoluble substance or therapeutically useful water insoluble or poorly water soluble compound, a phospholipid and optionally also at least one non-ionic, anionic, cationic or amphipathic surfactant, together with a matrix or bulking agent and if needed a release agent. The volume weighted mean particle size of the water insoluble particle is 5 micrometers or less.Type: ApplicationFiled: November 19, 1999Publication date: August 8, 2002Inventors: INDU PARIKH, AWADHESH K. MISHRA, ROBERT DONGA, MICHAEL G. VACHON
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Publication number: 20020022667Abstract: A sterile, injectable homogenized dispersion of micromatrices or microdroplets having a mean diameter from about 50 nm to about 1000 nm comprising about 1% to about 7.5% of propofol, about 1% to about 8% of a propofol-soluble diluent, and about 0.67% to about 5% of a surface stabilizing amphiphilic agent suspended in an aqueous medium containing a synergetic quantity of antimicrobial agent and a tonicity modifying amount of a pharmaceutically acceptable water-soluble hydroxyl-group-containing excipient, wherein the ratio of propofol to diluent is in the range of about 0.25 to about 7.5 while the ratio of propofol to amphiphilic agent is in the range from about 0.4 to about 1.5, and wherein the viscosity of the dispersion is in the range of 1.1 to 8 cps, processes for the formation of the dispersion, and methods of use are disclosed.Type: ApplicationFiled: June 14, 2001Publication date: February 21, 2002Inventors: Gary W. Pace, Michael G. Vachon, Awadesh K. Mishra, Robert A. Snow
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Publication number: 20020006442Abstract: Irritation upon injection of a formulation containing propofol is reduced or substantially eliminated by administering a stable, sterile, and antimicrobial aqueous dispersion comprising a water-insoluble microdroplet matrix of mean diameter from about 50 nm to about 1000 nm consisting essentially of about 1% to about 15% of propofol, up to about 7% of a propofol-soluble diluent, and about 0.8% to about 4% of a surface stabilizing amphiphilic aent. The aqueous phase includes a pharmaceutically acceptable water-soluble polyhydroxy tonicity modifier. The propofol-containing dispersion is devoid of additional bactericidal or bacteriostatic preservative agents.Type: ApplicationFiled: March 26, 2001Publication date: January 17, 2002Applicant: RTP Pharma Inc.Inventors: Awadhesh K. Mishra, Gary W. Pace, Michael G. Vachon
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Patent number: 6177103Abstract: Submicron particles of water-insoluble compounds, particularly drugs, are prepared by simultaneously stabilizing microparticulate suspensions of same with surface modifier molecules by rapid expansion into an aqueous medium from a compressed solution of the compound and surface modifiers in a liquefied gas and optionally homogenizing the aqueous suspension thus formed with a high pressure homogenizer.Type: GrantFiled: June 18, 1999Date of Patent: January 23, 2001Assignee: RTP Pharma, Inc.Inventors: Gary W. Pace, Michael G. Vachon, Awadhesh K. Mishra, Inge B. Henrikson, Val Krukonis