Patents by Inventor Ashfaq A. Khan

Ashfaq A. Khan 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: 20160228386
    Abstract: A pharmaceutical composition in the form of a tablet including a first portion and a second portion, wherein the first portion includes guaifenesin having an immediate release profile and a second drug having a sustained release profile, and wherein the second portion includes guaifenesin having a sustained release profile. The second drug can be in the form of a drug-resin complex. The second drug can be either an anti-tussive or a decongestant. The drug-resin complex includes a drug complexed to an ion exchange resin. The ion exchange resin can be a polystyrene sulfonate resin, polacrilex resin, polacrilin potassium, cholestyramine resin, or a colestyramine resin. The drug-resin complex can be provided with a coating, the coating thickness being selected to obtain the desired release profile. The drug-resin complex can be provided with a coating level of from 5% to 50%. The coating level can be from 10% to 35%.
    Type: Application
    Filed: April 19, 2016
    Publication date: August 11, 2016
    Inventors: Nils Ahlgren, Mark Nuttall, Jeannie Wong, Venkatesh Balasubramanian, Craig Belongie, Ashfaq Khan, Neil Campbell Muir
  • Patent number: 9339478
    Abstract: A pharmaceutical composition in the form of a tablet including a first portion and a second portion, wherein said first portion includes guaifenesin having an immediate release profile and a second drug having a sustained release profile, and wherein the second portion includes guaifenesin having a sustained release profile. The second drug can be in the form of a drug-resin complex. The second drug can be either an anti-tussive or a decongestant. The drug-resin complex includes a drug complexed to an ion exchange resin. The ion exchange resin can be a polystyrene sulfonate resin, polacrilex resin, polacrilin potassium, cholestyramine resin, or a colestyramine resin. The drug-resin complex can be provided with a coating, the coating thickness being selected to obtain the desired release profile. The drug-resin complex can be provided with a coating level of from 5% to 50%. The coating level can be from 10% to 35%.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: May 17, 2016
    Assignee: RECKITT BENCKISER LLC
    Inventors: Nils Ahlgren, Mark Nuttall, Jeannie Wong, Venkatesh Balasubramanian, Craig Belongie, Ashfaq Khan, Neil Campbell Muir
  • Publication number: 20120201887
    Abstract: A pharmaceutical composition in the form of a tablet including a first portion and a second portion, wherein said first portion includes guaifenesin having an immediate release profile and a second drug having a sustained release profile, and wherein the second portion includes guaifenesin having a sustained release profile. The second drug can be in the form of a drug-resin complex. The second drug can be either an anti-tussive or a decongestant. The drug-resin complex includes a drug complexed to an ion exchange resin. The ion exchange resin can be a polystyrene sulfonate resin, polacrilex resin, polacrilin potassium, cholestyramine resin, or a colestyramine resin. The drug-resin complex can be provided with a coating, the coating thickness being selected to obtain the desired release profile. The drug-resin complex can be provided with a coating level of from 5% to 50%. The coating level can be from 10% to 35%.
    Type: Application
    Filed: February 4, 2011
    Publication date: August 9, 2012
    Applicant: Reckitt Benckiser LLC
    Inventors: Nils Ahlgren, Mark Nuttall, Jeannie Wong, Venkatesh Balasubramanian, Craig Belongie, Ashfaq Khan, Neil Campbell Muir
  • Publication number: 20080184649
    Abstract: An Interlocking Stackable Modular Building Block plastic molded container is disclosed that is ideally suited for making barrier walls, slabs and emergency living quarters. The referred embodiment of the Block is a hollow container with extrusion tongue on the one end and insertion groove on the other end. The Blocks can be placed adjacent to each other in interlocking position by inserting the tongue of the first Block in to the groove of the adjacent Block. Blocks have narrow ledge on the top and wider extension on the bottom. The wider bottom fits snugly on the top narrow ledge when Blocks are placed on top of each other and are held tight with screws. Walls and slabs can be made out of Blocks when they are placed in adjacent interlocked position and stacked top and bottom position. Such walls and slabs are ideally suited for providing winterized insulated housing to people in remote areas and areas that are hit with natural calamities such as earthquakes and floods.
    Type: Application
    Filed: October 18, 2006
    Publication date: August 7, 2008
    Inventor: Ashfaq A. Khan
  • Patent number: 7080459
    Abstract: The Thread Ruler and Multi-Function Drafting Instrument is a single instrument designed to draw circles, ellipses and parallel lines, and which includes features that allow the instrument to function as protractor, a ruler and a drawing compass. The instrument has a slide ruler that holds a marking device and that has a stem with a thread attached. The thread is further attached to the main ruler body at an outer end of the protractor so that ellipses can be drawn. The instrument may be used on any flat marking surface including: paper, drafting table, chalkboard and dry erased board. The instrument may be adapted to be used in portable manner so that it can be placed in shirt pocket.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: July 25, 2006
    Inventor: Ashfaq A. Khan