Patents by Inventor Yahya Choonara

Yahya Choonara 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).

  • Patent number: 9205049
    Abstract: This invention relates to a multi-configured, transmucosal pharmaceutical dosage form and, more particularly, to a pharmaceutical dosage form which has a single monolithic/heterogeneous layer or a plurality of such layers. The dosage form is suitable for the delivery of one or more pharmaceutical compositions via the buccal, sublingual, rectal, vaginal or transmucosal delivery route in a human or animal body. It provides for selected delivery profiles resulting from, but not limited to, a porosity-enabled composite matrix of one or more layers/components of the pharmaceutical composition/s. The invention also provides for a method of manufacturing said transmucosal pharmaceutical dosage form in a plurality of configurations.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: December 8, 2015
    Assignee: University of the Witwatersrand, Johannesburg
    Inventors: Deshika Reddy, Oluwatoyin Ayotomilola Adeleke, Viness Pillay, Yahya Choonara
  • Patent number: 8778396
    Abstract: This invention relates to an orally administrable, gastroretentive pharmaceutical dosage form which contains at least one pharmaceutically active ingredient and at least one polymeric adjuvant. The adjuvant serves to retain the dosage form in a selected region of the gastrointestinal tract for sufficient time for the pharmaceutically active ingredient to be released and absorbed. Ideally the dosage form will contain two or more pharmaceutically active ingredients which are delivered to different regions of the gastrointestinal tract.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: July 15, 2014
    Assignee: University of the Witwatersrand, Johannesburg
    Inventors: Viness Pillay, Yahya Choonara, Caragh Murphy, Sarashnee Moonisami
  • Publication number: 20120003316
    Abstract: This invention relates to a multi-configured, transmucosal pharmaceutical dosage form and, more particularly, to a pharmaceutical dosage form which has a single monolithic/heterogeneous layer or a plurality of such layers. The dosage form is suitable for the delivery of one or more pharmaceutical compositions via the buccal, sublingual, rectal, vaginal or transmucosal delivery route in a human or animal body. It provides for selected delivery profiles resulting from, but not limited to, a porosity-enabled composite matrix of one or more layers/components of the pharmaceutical composition/s. The invention also provides for a method of manufacturing said transmucosal pharmaceutical dosage form in a plurality of configurations.
    Type: Application
    Filed: June 3, 2009
    Publication date: January 5, 2012
    Inventors: Deshika Reddy, Oluwatoyin Ayotomilola Adeleke, Viness Pillay, Yahya Choonara
  • Publication number: 20110195121
    Abstract: This invention relates to a pharmaceutical dosage form for the phase-controlled and chronotherapeutic delivery of at least one and, preferably, several pharmaceutically active ingredients. The dosage form has a carrier platform which,—preferably, is a polymer having known biodegradable characteristics. The platform may include a pharmaceutically active ingredient'which is released over a predetermined period of time as the platform polymer degrades. At least one pharmaceutically active ingredient in the form of a disc is embedded in the platform and, once the polymer of the platform has degraded, the disc is released and releases its ingredient in the same location as that of the platform or it travels to another region of the body where it releases its ingredient.
    Type: Application
    Filed: June 3, 2009
    Publication date: August 11, 2011
    Inventors: Seshni Sewlall, Viness Pillay, Yahya Choonara, Zaheeda Khan
  • Publication number: 20110182988
    Abstract: This invention relates to an orally administrable, gastroretentive pharmaceutical dosage form which contains at least one pharmaceutically active ingredient and at least one polymeric adjuvant. The adjuvant serves to retain the dosage form in a selected region of the gastrointestinal tract for sufficient time for the pharmaceutically active ingredient to be released and absorbed. Ideally the dosage form will contain two or more pharmaceutically active ingredients which are delivered to different regions of the gastrointestinal tract.
    Type: Application
    Filed: June 3, 2009
    Publication date: July 28, 2011
    Inventors: Viness Pillay, Yahya Choonara, Caragh Murphy, Sarashnee Moonisami
  • Publication number: 20110182987
    Abstract: This invention relates to a pharmaceutical dosage form for the site specific delivery of more than one active pharmaceutical ingredient to different sites in the human or animal body in the gastrointestinal tract. The dosage form has an outer polymeric layer incorporating a first active pharmaceutical ingredient which reacts to stimuli specific in the stomach, degrades, and releases the first active pharmaceutical ingredient in the stomach for absorption. The dosage form also has at least one inner polymeric layer incorporating a second active pharmaceutical ingredient which, once the outer layer has degraded, passes into the intestine where the polymers of the second layer degrade to release the second active pharmaceutical ingredient. The dosage form may have additional layers each incorporating active pharmaceutical ingredients for release in different portions of the intestine depending on the nature of the polymers.
    Type: Application
    Filed: June 3, 2009
    Publication date: July 28, 2011
    Inventors: Priya Bawa, Viness Pillay, Yahya Choonara
  • Publication number: 20070122449
    Abstract: The invention relates to biodegradable and implantable devices for the in situ delivery of a pharmaceutical composition to a human or animal that comprise a generally discoid body, having at least one aperture through which the body is anchorable by suture, and that are formed from biodegradable polymeric compositions. The invention relates to methods of manufacturing devices for the in situ delivery of a pharmaceutical composition to a human or animal that comprise a generally discoid body, having at least one aperture through which the body is anchorable by suture, and that are formed from biodegradable polymeric compositions. The invention relates to a therapeutic method that comprises inserting a biodegradable and implantable device that comprises a generally discoid body, having at least one aperture through which the body is anchorable by suture, and that is formed from a biodegradable polymeric composition, into a body cavity of a human or animal.
    Type: Application
    Filed: November 28, 2005
    Publication date: May 31, 2007
    Inventors: Yahya Choonara, Michael Danckwerts, Viness Pillay