Patents by Inventor Mohammad Aslam

Mohammad Aslam 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: 9795948
    Abstract: The sunlight active composite photocatalyst for water purification includes ZnO (zinc oxide) and Co3O4 (cobalt II, III oxide). The composite photocatalyst may, in the presence of natural sunlight, achieve complete mineralization of chemical and biological contaminants in water without leaving any hazardous by-products. The composite photocatalyst may be synthesized by a sol gel route or process.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: October 24, 2017
    Assignee: KING ABDULAZIZ UNIVERSITY
    Inventors: Abdul Hameed Fateh Muhammad, Mohammad Aslam Inayatullah, Iqbal M. I. Ismail, Sivaraman Chandrasekaran
  • Publication number: 20160207030
    Abstract: The sunlight active composite photocatalyst for water purification includes ZnO (zinc oxide) and Co3O4 (cobalt II, III oxide). The composite photocatalyst may, in the presence of natural sunlight, achieve complete mineralization of chemical and biological contaminants in water without leaving any hazardous by-products. The composite photocatalyst may be synthesized by a sol gel route or process.
    Type: Application
    Filed: January 16, 2015
    Publication date: July 21, 2016
    Inventors: ABDUL HAMEED FATEH MUHAMMAD, MOHAMMAD ASLAM INAYATULLAH, IQBAL M.I. ISMAIL, SIVARAMAN CHANDRASEKARAN
  • Patent number: 8337813
    Abstract: The present invention relates generally to multimodal magnetic resonance imaging (MRI) contrast agents. In particular, the present invention provides a MRI contrast agent configured to manipulate both the longitudinal (T1) and transverse (T2) relaxation times of surrounding water proton spins.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: December 25, 2012
    Assignee: Northwestern University
    Inventors: Elise A. Schultz Sikma, Mohammad Aslam, Vinayak P. Dravid, Thomas J. Meade, Bradley D. Ulrich
  • Publication number: 20090269284
    Abstract: The present invention relates generally to multimodal magnetic resonance imaging (MRI) contrast agents. In particular, the present invention provides a MRI contrast agent configured to manipulate both the longitudinal (T1) and transverse (T2) relaxation times of surrounding water proton spins.
    Type: Application
    Filed: September 15, 2008
    Publication date: October 29, 2009
    Applicant: Northwestern University
    Inventors: Elise A. Schultz Sikma, Mohammad Aslam, Vinayak P. Dravid, Thomas J. Meade, Bradley D. Ulrich
  • Publication number: 20080255103
    Abstract: A topical pharmaceutical preparation suitable for use as an antihistamine or anti-nausea drug comprises an emu oil gel base and a therapeutic amount of promethazine.HCl. The preparation may further comprise an antioxidant. The preparation is preferably packaged as a single unit dose. A method for preparing the topical pharmaceutical preparation comprises the steps of combining a clear gel with an emu oil mixture and adding a therapeutic amount of promethazine.HCl solution.
    Type: Application
    Filed: April 12, 2007
    Publication date: October 16, 2008
    Applicant: Ballay Pharmaceuticals, Inc.
    Inventors: Mohammad Aslam, J. Rao Nulu, Terry Ballay, Matthew S. Ballay
  • Patent number: 6420606
    Abstract: Disclosed are methods of producing of alkoxy arylamine compounds which find particular use in the syntheses of pharmaceutical drug. The alkoxy arylamine compounds generally have the formula: H2N—Ar—OR wherein Ar is an unsubstituted or substituted aromatic group, and R is an unsubstituted or substituted alkyl or aryl group. The methods comprise generally, the steps of (a) alkylating a protected-amino arylalcohol to form a protected-amino arylether; and (b) deprotecting said protected-amino arylether to form an alkoxy arylamine compound.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: July 16, 2002
    Assignee: Honeywell International Inc.
    Inventors: Mohammad Aslam, Patrick MacManus, Margaret Cullen
  • Patent number: 5977369
    Abstract: A novel process is disclosed for the preparation of dihydropyridine compounds and derivatives thereof, and more particularly felodipine. The process to prepare felodipine involves a two step procedure condensing 2,3-dichlorobenzaldehyde with methyl acetoacetate in the presence of a catalyst system. The resultant benzylidine intermediate is sequentially reacted with ethyl aminocrotonate to provide felodipine. The novelty of the present invention resides in part on (1) a new catalyst system not previously disclosed for the preparation of felodipine, (2) the absence of acid(s), (3) the control of reaction conditions to yield lower amounts of unreacted aldehyde compared to known reactions, (4) a simplified purification process, and (5) formation of negligible quantities of symmetrical diester byproducts.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: November 2, 1999
    Assignee: Napp Technologies, Inc.
    Inventors: Ranjit Desai, Daniel Alfonso Aguilar, Mohammad Aslam, Nicholas Gallegos
  • Patent number: 5773591
    Abstract: A novel process for preparing sulfonic acid esters and amides of benzo-heterocyclic diazo diketo compounds, such as substituted diazo-4-oxo-3,4-dihydrocoumarins, which are useful synthetic intermediates in a wide variety of applications including photoresists, opto-electronics, agricultural, and pharmaceutical applications is disclosed and claimed. The process comprises the steps of (a) subjecting a substituted benzo-heterocyclic .beta.-keto-enol compound to suitable diazo transfer conditions in the presence of a diazo transfer agent; (b) subjecting the so formed diazo diketo compound to suitable halosulfonation conditions in the presence of a halosulfonation agent; and (c) subjecting the so formed halosulfonyl aromatic compound to suitable substitution reaction in the presence of an alcohol or an amine to form the corresponding sulfonic acid ester or amide of benzo-heterocyclic diazo diketo compound.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: June 30, 1998
    Assignee: Hoechst Celanese Corp.
    Inventors: Mohammad Aslam, Michael T. Sheehan, George Kvakovszky
  • Patent number: 5739295
    Abstract: A new class of 3-diazo-3,4-dihydrocoumarin compounds which are useful as photoactive compounds in a wide variety of applications including photoresists and other opto-electronic applications are disclosed and claimed. Preferred embodiments include 6-sulfonyl-3-diazo-4-oxo-3,4-dihydrocoumarin esters. These compounds exhibit very high photosensitivity in the deep ultraviolet (DUV) region (ca. 250 nm), and therefore, are useful as photoactive compounds in DUV photoresist formulations.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: April 14, 1998
    Assignee: Hoechst Celanese Corporation
    Inventors: Mohammad Aslam, Michael T. Sheehan, George Kvakovszky, Kenneth G. Davenport, Douglas J. Gordon
  • Patent number: 5726295
    Abstract: A new class of 3,4-dihydrocoumarin derivatives which are useful as photoactive compounds in a wide variety of applications including photoresists and other opto-electronic applications are disclosed and claimed. Preferred embodiments include ether, ester, carbonate, and sulfonate derivatives of 5-hydroxy, 6-hydroxy, and 7-hydroxy-3-diazo-4-oxo-3,4-dihydrocoumarins. These compounds exhibit very high photosensitivity in the deep ultraviolet (DUV) region (ca. 250 nm), and therefore, are useful as photoactive compounds in DUV photoresist formulations.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: March 10, 1998
    Assignee: Hoechst Celanese Corp.
    Inventors: Mohammad Aslam, Michael T. Sheehan, Debasish Kuila
  • Patent number: 5726296
    Abstract: Novel processes for the preparation of a new class of coumarin derivatives, which are useful as photoactive compounds in a wide variety of applications including photoresists and other opto-electronic applications, are disclosed and claimed. The process involves a multi-step synthetic method for the preparation of ether, ester, carbonate, or sulfonate derivative of 5-hydroxy, 6-hydroxy, or 7-hydroxy-3-diazo-4-oxo-3,4-dihydrocoumarin starting from the corresponding dihydroxyacetophenone. The compounds formed from the process of the present invention exhibit very high photosensitivity in the deep ultraviolet (DUV) region (ca. 250 nm), and therefore, are useful as photoactive compounds in DUV photoresist formulations.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: March 10, 1998
    Assignee: Hoechst Celanese Corp.
    Inventors: Mohammad Aslam, Michael T. Sheehan, Debasish Kuila
  • Patent number: 5696274
    Abstract: The present invention provides processes which are flexible, cost effective, and commercially viable methods of manufacturing or producing products from 2-hydroxyacetophenone (2-HAP).Of particular interest of the available products are 4-hydroxycoumarin, warfarin-alkali salt, preferably warfarin sodium and warfarin-alkali salt-isopropyl alcohol (2-propanol) complex, more preferably warfarin-sodium-isopropyl alcohol complex.As is known, these compounds are useful as vitamin K dependent anticoagulants in the treatment of humans and animals. In different doses, they are also useful as rodenticide.The inventive process involves contacting 2-HAP, carbonate ester and effective base followed by treatment with an unsaturated ketone and phase transfer catalyst to ultimately yield product.
    Type: Grant
    Filed: May 22, 1996
    Date of Patent: December 9, 1997
    Assignee: Hoechst Celanese Corporation
    Inventors: Ibrahim M. Uwaydah, Mohammad Aslam, Charles H. Brown, II, Sharon R. Fitzhenry, Joseph A. McDonough
  • Patent number: 5602285
    Abstract: Substituted phenethanol ethers are prepared in useful yields by the etherification of corresponding substituted phenethyl alcohols with aliphatic primary alcohols. The etherification is carried out by reacting a substituted phenethyl alcohol with an aliphatic primary alcohol in the presence of an acid catalyst at a temperature of at least about 75.degree. C.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: February 11, 1997
    Assignee: Hoechst Celanese Corp.
    Inventors: John R. Durrwachter, Humberto Ramos, Jr., Mohammad Aslam
  • Patent number: 5600009
    Abstract: The palladium-catalyzed coupling of aryl and vinyl halides with vinylic compounds is disclosed. A preferred embodiment relating to the palladium catalyzed coupling of 4-substituted and 6-substituted-2-methoxynaphthalene to form nabumetone is also disclosed. The beauty of this novel reaction is that methylvinylketone, normally employed by the art directly as-is for the preparation of nabumetone, is formed in situ. We have discovered a mechanism to take advantage of the in situ formation of methylvinylketone, thus avoiding the use of expensive, toxic, and unstable methyl vinyl ketone feed. This reaction may be employed for a variety of pharmaceutically active and non-pharmaceutical compounds.
    Type: Grant
    Filed: April 9, 1996
    Date of Patent: February 4, 1997
    Assignee: Hoechst Celanese Corporation
    Inventors: John F. Fritch, Mohammad Aslam, Dora E. Rios, Joel C. Smith
  • Patent number: 5563300
    Abstract: The present invention provides a unique and novel way of producing carbinols such as 4-hydroxyphenylmethylcarbinol (HPMC). In this new process, a ketone such as 4-hydroxyacetophenone (4-HAP) is heated under suitable hydrogenation conditions of temperature and pressure in the presence of a suitable catalyst and a basic material, and for a sufficient period of time to form HPMC.
    Type: Grant
    Filed: December 7, 1995
    Date of Patent: October 8, 1996
    Assignee: Hoechst Celanese Corporation
    Inventors: James R. Sounik, Graham N. Mott, Charles B. Hilton, Mohammad Aslam
  • Patent number: 5526703
    Abstract: A force detecting microsensor comprises a single crystal Si substrate, a single crystal cone formed on the substrate and a resilient electrode mounted above the tip of the Si cone. The space between the tip of the Si cone and the resilient electrode is maintained in a vacuum environment and the distance between the tip and the resilient anode is in the order of a few atomic diameters. The tunneling effect of electrons occurs between the tip of the Si cone and the resilient electrode when a potential is applied to the resilient electrode and the Si cone tip. The resilient electrode deflects as a result of the force acting on the microsensor. The deflection of the resilient electrode alters the electrical characteristics between the resilient electrode and the Si cone tip. The changes in the electrical characteristics can be measured to determine the level of force acting on the microsensor.
    Type: Grant
    Filed: August 21, 1992
    Date of Patent: June 18, 1996
    Assignee: Smiths Industries Aerospace & Defense Systems, Inc.
    Inventors: Mohammad Aslam, Michael D. Olinger, Jerry L. Page
  • Patent number: 5488350
    Abstract: Novel structures are provided including laminated layers of the diamond film in different patterns for conducting, generating and/or absorbing thermal energy. In particular, a thermal sensor/heater is shown including a doped electrically conductive diamond film layer encapsulated by layers of undoped electrically insulative layers on a silicon wafer. Also, a GaAs/Si on diamond laminate structure is provided in which the diamond film acts as a substrate and a heat sink. Notably, the diamond film structures are characterized by their high thermal conductivity, high chemical resistance, and high hardness/wear resistance due to the properties of the diamond films.
    Type: Grant
    Filed: January 7, 1994
    Date of Patent: January 30, 1996
    Assignee: Michigan State University
    Inventors: Mohammad Aslam, James V. Beck
  • Patent number: 5474808
    Abstract: Methods for seeding and growing diamond films on planar and non-planar surfaced substrates and also for patterning the diamond films include mixing submicron diameter diamond particles and binder particles in carriers such as photoresist or water, and applying the mixture to a substrate surface. Treatment of the substrate by chemical vapor deposition then removes the carrier and grows the dispersed diamond particles into a diamond film. Notably, diamond particles having an average size of 25 nanometers form a particularly desirable mixture since the particles do not tend to settle out of the mixture, and also since these particles result in smooth diamond films. The mixtures can be applied onto non-planar surfaces by spraying, dipping, or dispensing and jet writing, and can be applied to planar and non-planar surfaces as a complete coating, as a line, or as a pattern.
    Type: Grant
    Filed: January 7, 1994
    Date of Patent: December 12, 1995
    Assignee: Michigan State University
    Inventor: Mohammad Aslam
  • Patent number: 5424241
    Abstract: A force detecting microsensor comprises a single crystal Si substrate, a single crystal cone formed on the substrate and a resilient electrode mounted above the tip of the Si cone. The space between the tip of the Si cone and the resilient electrode is maintained in a vacuum environment and the distance between the tip and the resilient anode is in the order of a few atomic diameters. The tunneling effect of electrons occurs between the tip of the Si cone and the resilient electrode when a potential is applied to the resilient electrode and the Si cone tip. The resilient electrode deflects as a result of the force acting on the microsensor. The deflection of the resilient electrode alters the electrical characteristics between the resilient electrode and the Si cone tip. The changes in the electrical characteristics can be measured to determine the level of force acting on the microsensor.
    Type: Grant
    Filed: June 14, 1994
    Date of Patent: June 13, 1995
    Assignee: Smiths Industries Aerospace & Defense Systems, Inc.
    Inventors: Mohammad Aslam, Michael D. Olinger, Jerry L. Page
  • Patent number: 5413668
    Abstract: Methods for making mechanical and micro-electromechanical devices (a) forming a mold having a base and metallic walls defining a molding space therebetween, the base being exposed between the metallic walls and either being capable of or having a nucleating upper surface capable of nucleating the deposition of a structural material which does not nucleate on or adhere to the metallic walls at conditions of deposition; (b) depositing a structural material onto either the nucleating upper surface or base and filling to a predetermined height to form a strong solid body; and (c) removing the metallic walls, leaving free-standing, solid body walls of structural material attached to the base; another embodiment of the method may include step (a) and steps (b) filling the molding space with a diamond-nucleating material; (c) consolidating the diamond-nucleating material so as to form a strong solid body; and (d) removing the metallic walls, and thereby freeing the solid body, by dissolving the metallic walls with a
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: May 9, 1995
    Assignee: Ford Motor Company
    Inventors: Mohammad Aslam, Michael A. Tamor