Patents by Inventor Tahseen A. Chowdhury
Tahseen A. Chowdhury 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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Patent number: 11801233Abstract: The present disclosure relates to an oral eliglustat transmucosal delivery system. More specifically, the present disclosure is related to an oral transmucosal dosage form comprising a non-disintegrating solid mass comprising (a) a hydrophilic viscosity modifying agent selected from a natural or a synthetic gum with a molecular weight of 10,000 Daltons or greater, (b) a low molecular weight water soluble component with a molecular weight of less than 10,000 Daltons and (c) not more than 70 mg eliglustat, wherein the dosage form is 500 mg or less and provides an oral cavity residence time of at least about 5 minutes, and wherein the dosage form generates a microenvironment inside the oral cavity exhibiting a thixotropic behavior with viscosities of at least 50 poises at 1/sec shear rate and at least 10 poises at 10/sec share rate. The dosage forms of as described herein have at least 30% dose reduction as compared to commercially available eliglustat capsules.Type: GrantFiled: July 6, 2022Date of Patent: October 31, 2023Assignee: ABON PHARMACEUTICALS, LLCInventors: Salah U. Ahmed, Yanming Zu, Tahseen A. Chowdhury, Saad Muntazim, Mohammed Irfan Syed
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Patent number: 11596628Abstract: The invention relates to extended-release formulations comprising: (i) a poorly water-soluble active pharmaceutical ingredient; and (ii) a non-aqueous liquid vehicle comprising (a) a hydrophobic lipid comprising a glyceryl ester of a C6-C24 fatty acid, or (b) a hydrophilic organic compound selected from the group consisting of polyethylene glycol, propylene glycol, glycerin, and dimethylsulfoxide, or (c) a combination of (a) and (b), and (iii) an amphiphilic agent wherein the active pharmaceutical ingredient is dispersed as discrete particles having a D90 particle size of about 0.5 ?m to about 25 ?m in the formulation, and wherein the formulation is non-gelling and thixotropic with a viscosity of less than 10 poise at a shear rate of 10/s at 25° C.Type: GrantFiled: October 24, 2016Date of Patent: March 7, 2023Assignee: Abon Pharmaceuticals, LLCInventors: Salah U. Ahmed, Yanming Zu, Jason LePree, Hetalben Prajapati, Tahseen A. Chowdhury
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Patent number: 11413271Abstract: The present disclosure relates to an oral eliglustat transmucosal delivery system. More specifically, the present disclosure is related to an oral transmucosal dosage form comprising a non-disintegrating solid mass comprising (a) a hydrophilic viscosity modifying agent selected from a natural or a synthetic gum with a molecular weight of 10,000 Daltons or greater, (b) a low molecular weight water soluble component with a molecular weight of less than 10,000 Daltons and (c) not more than 70 mg eliglustat, wherein the dosage form is 500 mg or less and provides an oral cavity residence time of at least about 5 minutes, and wherein the dosage form generates a microenvironment inside the oral cavity exhibiting a thixotropic behavior with viscosities of at least 50 poises at 1/sec shear rate and at least 10 poises at 10/sec share rate. The dosage forms of as described herein have at least 30% dose reduction as compared to commercially available eliglustat capsules.Type: GrantFiled: June 7, 2019Date of Patent: August 16, 2022Assignee: ABON PHARMACEUTICALS LLCInventors: Salah U. Ahmed, Yanming Zu, Tahseen A. Chowdhury, Saad Muntazim, Mohammed Irfan Syed
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Patent number: 10821118Abstract: This invention relates to dosage forms for the delivery of drugs across the oral mucosa having improved transmucosal permeability. More specifically, the invention relates to an oral transmucosal dosage form comprising a primary vehicle comprising a crystallization inhibition agent (CIA) system and a drug, and a secondary vehicle. It also relates to methods of designing and making this dosage form, methods of administering this dosage form and methods of packaging the dosage forms.Type: GrantFiled: September 25, 2017Date of Patent: November 3, 2020Assignee: Abon Pharmaceuticals LLCInventors: Salah U. Ahmed, Yanming Zu, Karunakar Neelam, Saad Muntazim, Tahseen A. Chowdhury, Shiying Tian
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Patent number: 9795616Abstract: This invention relates to dosage forms for the delivery of drugs across the oral mucosa having improved transmucosal permeability. More specifically, the invention relates to an oral transmucosal dosage form comprising a primary vehicle comprising a crystallization inhibition agent (CIA) system and a drug, and a secondary vehicle. It also relates to methods of designing and making this dosage form, methods of administering this dosage form and methods of packaging the dosage forms.Type: GrantFiled: April 29, 2016Date of Patent: October 24, 2017Assignee: Abon Pharmaceuticals LLCInventors: Salah U. Ahmed, Yanming Zu, Karunakar Neelam, Saad Muntazim, Tahseen A. Chowdhury, Shiying Tian
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Patent number: 9352047Abstract: This invention relates to dosage forms for the delivery of drugs across the oral mucosa having improved transmucosal permeability. More specifically, the invention relates to an oral transmucosal dosage form comprising a primary vehicle comprising a crystallization inhibition agent (CIA) system and a drug, and a secondary vehicle. It also relates to methods of designing and making this dosage form, methods of administering this dosage form and methods of packaging the dosage forms.Type: GrantFiled: November 14, 2013Date of Patent: May 31, 2016Assignee: ABON PHARMACEUTICALS, LLCInventors: Salah U. Ahmed, Yanming Zu, Karunakar Neelam, Saad Muntazim, Tahseen A. Chowdhury, Shiying Tian
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Patent number: 8323679Abstract: The present invention is directed to flexible, compressed intravaginal rings comprising a substantially homogeneous compressed mixture comprising a polymethacrylate, a plasticizer, and an active agent, and methods of making and using the same, and apparatus for making the same.Type: GrantFiled: January 5, 2011Date of Patent: December 4, 2012Assignee: TEVA Women's Health, Inc.Inventors: Salah U. Ahmed, Tahseen A. Chowdhury, Yi Luo
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Patent number: 8226980Abstract: The present invention is directed to non-effervescent, orally disintegrating solid pharmaceutical dosage forms comprising progestin and methods of making and using the dosage forms to treat conditions in females in need thereof.Type: GrantFiled: December 2, 2010Date of Patent: July 24, 2012Inventors: Salah U. Ahmed, Sundeep Sethia, Tahseen A. Chowdhury
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Patent number: 8202534Abstract: The present invention relates to a method of attaching a handle to a solid oral dosage form by use of high frequency mechanical vibrations. The present invention also relates to a method of attaching a handle to a solid oral dosage form, the method comprising: (a) placing a handle in contact with a solid oral dosage form, wherein an area of contact between the handle and the solid oral dosage form forms a joint interface; (b) applying high frequency mechanical vibrations to the joint interface until the solid oral dosage form at the joint interface reaches a molten state; and (c) cooling the joint interface in a molten state to allow solidification, thereby attaching the handle to the solid oral dosage form.Type: GrantFiled: June 5, 2006Date of Patent: June 19, 2012Assignee: Teva Women's Health, Inc.Inventors: Tahseen A. Chowdhury, Edward J. Gabrielski, Christopher H. Baker
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Publication number: 20110212155Abstract: The present invention is directed to flexible, compressed intravaginal rings comprising a substantially homogeneous compressed mixture comprising a polymethacrylate, a plasticizer, and an active agent, and methods of making and using the same, and apparatus for making the same.Type: ApplicationFiled: January 5, 2011Publication date: September 1, 2011Inventors: Salah U. AHMED, Tahseen A. Chowdhury, Yi Luo
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Publication number: 20110136771Abstract: The present invention is directed to non-effervescent, orally disintegrating solid pharmaceutical dosage forms comprising progestin and methods of making and using the dosage forms to treat conditions in females in need thereof.Type: ApplicationFiled: December 2, 2010Publication date: June 9, 2011Inventors: Salah U. AHMED, Sundeep Sethia, Tahseen A. Chowdhury
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Patent number: 7908729Abstract: A method for attaching a handle to a tablet to form a lollipop utilizes a specific work holder. The work holder has a tooling pallet with a plurality of openings going from a top surface to a bottom surface. A bullet and a spring are located in each opening and held in place by a plate that slides through a groove in the bottom surface of the tooling pallet to block the openings in the bottom surface. Each spring is positioned between a bullet and the plate. A tablet is placed in a cavity of each bullet and a handle is placed in contact with each tablet. High frequency mechanical vibrations, such as ultrasonic vibrations, are applied to a joint interface between each tablet and bullet until the joint interface reaches a molten state. The joint interfaces are then allowed to cool, thereby attaching a handle to each tablet and forming a lollipop.Type: GrantFiled: November 3, 2006Date of Patent: March 22, 2011Assignee: Teva Women's Health, Inc.Inventors: Tahseen A. Chowdhury, Edward J. Gabrielski, Christopher H. Baker
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Patent number: 7910126Abstract: The present invention is directed to flexible, compressed intravaginal rings comprising a substantially homogeneous compressed mixture comprising a polymethacrylate, a plasticizer, and an active agent, and methods of making and using the same, and apparatus for making the same.Type: GrantFiled: March 20, 2007Date of Patent: March 22, 2011Assignee: TEVA Women's Health, Inc.Inventors: Salah U. Ahmed, Tahseen A. Chowdhury, Yi Luo
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Publication number: 20110046115Abstract: A non-effervescent, solid dosage form containing mirtazapine, which is used to form mirtazapine pharmaceutical tablets. The dosage form contains mirtazapine, a hydrophilic component, and at least one lubricant. In some embodiments, the dosage forms contain a salivating agent. Processes for producing mirtazapine orally disintegrating tablets are also provided.Type: ApplicationFiled: October 28, 2010Publication date: February 24, 2011Applicant: WATSON LABORATORIES, INC.Inventors: Salah U. Ahmed, Gandha V. Naringrekar, Tahseen A. Chowdhury, Sudhir R. Gorukanti
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Patent number: 7867515Abstract: The present invention is directed to non-effervescent, orally disintegrating solid pharmaceutical dosage forms comprising progestin and methods of making and using the dosage forms to treat conditions in females in need thereof.Type: GrantFiled: December 20, 2007Date of Patent: January 11, 2011Assignee: TEVA Woman's Health, Inc.Inventors: Salah U. Ahmed, Sundeep Sethia, Tahseen A. Chowdhury
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Patent number: 7838029Abstract: A non-effervescent, solid dosage form containing mirtazapine, which is used to form mirtazapine pharmaceutical tablets. The dosage form contains mirtazapine, a hydrophilic component, and at least one lubricant. In some embodiments, the dosage forms contain a salivating agent. Processes for producing mirtazapine orally disintegrating tablets are also provided.Type: GrantFiled: August 2, 2004Date of Patent: November 23, 2010Assignee: Watson Laboratories, Inc.Inventors: Salah U. Ahmed, Gandha V. Naringrekar, Tahseen A. Chowdhury, Sudhir R. Gorukanti
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Patent number: 7811604Abstract: The present invention is directed to non-effervescent, orally disintegrating dosage forms comprising free base clozapine that are substantially free of acids, water-soluble polymers, taste-masking polymers, and coatings, and methods of making and using the same.Type: GrantFiled: November 14, 2006Date of Patent: October 12, 2010Assignee: Barr Laboratories, Inc.Inventors: Salah U. Ahmed, Lianli Li, Tahseen A. Chowdhury
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Publication number: 20080175906Abstract: The present invention is directed to non-effervescent, orally disintegrating solid pharmaceutical dosage forms comprising progestin and methods of making and using the dosage forms to treat conditions in females in need thereof.Type: ApplicationFiled: December 20, 2007Publication date: July 24, 2008Inventors: Salah U. Ahmed, Sundeep Sethia, Tahseen A. Chowdhury
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Patent number: 7390503Abstract: An ondansetron solid orally disintegrating dosage form for oral administration having at least one first water-dispersible component or water-insoluble cellulose derivative, a component having a —CHOH functional group, a disintegrating agent and at least one lubricant is provided. The dosage form can comprise ondansetron, a hydrophilic polymer such as microcrystalline cellulose, a component having a —CHOH functional group such as mannitol or xylitol and a disintegrating agent such as crospovidone. The lubricant may be a mixture of magnesium stearate, sodium stearyl fumarate and colloidal silicon dioxide. The present invention provides a non-effervescent tablet comprising the ondansetron dosage form. Another aspect of the invention is the treatment of emesis such as nausea and vomiting caused by cancer chemotherapy and radiation by the administration of the ondansetron formulation of the present composition.Type: GrantFiled: August 23, 2004Date of Patent: June 24, 2008Assignee: Barr Laboratories, Inc.Inventors: Salah U. Ahmed, Sudhir R. Gorukanti, Tahseen A. Chowdhury