Patents by Inventor Andrew Lester Lewis

Andrew Lester Lewis 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).

  • PROCESS FOR PREPARING MICROPARTICLES
    Publication number: 20160074327
    Abstract: A process for preparing microparticles comprising a biologically active material and a polymer and having a mean particle size expressed as the volume mean diameter (VMD) of from 10 to 500 ?m, wherein the biologically active material is substantially insoluble in the polymer, which process comprises: a. contacting a mixture of the biologically active material or a precursor thereof, the polymer or a precursor thereof and a processing aid with a supercritical fluid which is capable of swelling the polymer under temperature and pressure conditions necessary to maintain the fluid in a supercritical state; b. allowing the supercritical fluid to penetrate and liquefy the polymer, whilst maintaining the temperature and pressure conditions so that the fluid is maintained in a supercritical state; c. releasing the pressure to precipitate microparticles comprising the biologically active agent and the polymer.
    Type: Application
    Filed: November 20, 2015
    Publication date: March 17, 2016
    Inventors: Andrew Naylor, Andrew Lester Lewis, Lisbeth Illum
  • Process for preparing microparticles
    Patent number: 9226900
    Abstract: A process for preparing microparticles comprising a biologically active material and a polymer and having a mean particle size expressed as the volume mean diameter (VMD) of from 10 to 500 ?m, wherein the biologically active material is substantially insoluble in the polymer, which process comprises: a. contacting a mixture of the biologically active material or a precursor thereof, the polymer or a precursor thereof and a processing aid with a supercritical fluid which is capable of swelling the polymer under temperature and pressure conditions necessary to maintain the fluid in a supercritical state; b. allowing the supercritical fluid to penetrate and liquefy the polymer, while maintaining the temperature and pressure conditions so that the fluid is maintained in a supercritical state; c. releasing the pressure to precipitate microparticles comprising the biologically active agent and the polymer.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: January 5, 2016
    Assignee: Critical Pharmaceuticals Limited
    Inventors: Andrew Naylor, Andrew Lester Lewis, Lisbeth Illum
  • Absorption of therapeutic agents across mucosal membranes or the skin
    Patent number: 8795634
    Abstract: Absorption of a therapeutic agent across a mucosal membrane or the skin can be enhanced using an absorption enhancer comprising a hydroxy fatty acid ester of polyethylene glycol.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: August 5, 2014
    Assignee: Critical Pharmaceuticals Limited
    Inventors: Lisbeth Illum, Faron Michael Jordan, Andrew Lester Lewis
  • ABSORPTION OF THERAPEUTIC AGENTS ACROSS MUCOSAL MEMBRANES OR THE SKIN
    Publication number: 20140072588
    Abstract: Absorption of a therapeutic agent across a mucosal membrane or the skin can be enhanced using an absorption enhancer comprising a hydroxy fatty acid ester of polyethylene glycol.
    Type: Application
    Filed: November 14, 2013
    Publication date: March 13, 2014
    Applicant: Critical Pharmaceuticals Limited
    Inventors: Lisbeth Illum, Faron Michael Jordan, Andrew Lester Lewis
  • PHARMACEUTICAL COMPOSITIONS OF SOMATOTROPHIC HORMONES
    Publication number: 20110257097
    Abstract: The invention provides a composition comprising (i) a somatotrophic hormone; (ii) a biodegradable polymer component; and (iii) a release modifier. A process for preparing, and the use of such a composition are also provided.
    Type: Application
    Filed: July 10, 2009
    Publication date: October 20, 2011
    Inventors: Andrew Naylor, Andrew Lester Lewis, Lisbeth Illum
  • PROCESS FOR PREPARING MICROPARTICLES
    Publication number: 20110172141
    Abstract: A process for preparing microparticles comprising a biologically active material and a polymer and having a mean particle size expressed as the volume mean diameter (VMD) of from 10 to 500 ?m, wherein the biologically active material is substantially insoluble in the polymer, which process comprises: a. contacting a mixture of the biologically active material or a precursor thereof, the polymer or a precursor thereof and a processing aid with a supercritical fluid which is capable of swelling the polymer under temperature and pressure conditions necessary to maintain the fluid in a supercritical state; b. allowing the supercritical fluid to penetrate and liquefy the polymer, whilst maintaining the temperature and pressure conditions so that the fluid is maintained in a supercritical state; c. releasing the pressure to precipitate microparticles comprising the biologically active agent and the polymer.
    Type: Application
    Filed: July 10, 2009
    Publication date: July 14, 2011
    Applicant: Critical Pharmaceuticals Limited
    Inventors: Andrew Naylor, Andrew Lester Lewis, Lisbeth Illum
  • ABSORPTION OF THERAPEUTIC AGENTS ACROSS MUCOSAL MEMBRANES OR THE SKIN
    Publication number: 20110171140
    Abstract: Absorption of a therapeutic agent across a mucosal membrane or the skin can be enhanced using an absorption enhancer comprising a hydroxy fatty acid ester of polyethylene glycol.
    Type: Application
    Filed: September 14, 2009
    Publication date: July 14, 2011
    Applicant: CRITICAL PHARMACEUTICALS LIMITED
    Inventors: Lisbeth Illum, Faron Michael Jordan, Andrew Lester Lewis