Patents by Inventor Waheed Mukaddam
Waheed Mukaddam 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: 10662139Abstract: Provided herein are methods of producing acrylic acid from bPL. Such methods involve the use of a heterogeneous catalyst, such as a zeolite at vapor phase conditions. The method may use a fixed bed, moving bed or fluidized contacting zone as the reactor configurations.Type: GrantFiled: March 21, 2017Date of Patent: May 26, 2020Assignee: Novomer, Inc.Inventors: Sadesh H Sookraj, Alexander Tseitlin, Konstantin A. Pokrovski, Waheed Mukaddam
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Publication number: 20170267618Abstract: Provided herein are methods of producing acrylic acid from bPL. Such methods involve the use of a heterogeneous catalyst, such as a zeolite at vapor phase conditions. The method may use a fixed bed, moving bed or fluidized contacting zone as the reactor configurations.Type: ApplicationFiled: March 21, 2017Publication date: September 21, 2017Inventors: Sadesh H. Sookraj, Alexander Tseitlin, Konstantin A. Pokrovski, Waheed Mukaddam
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Publication number: 20100268008Abstract: Improved integrated processes for the production of alkyl aromatic compounds are disclosed wherein aromatic compounds which may be treated for removal of deleterious substances are reacted with olefin compounds, which may also be treated for contaminant removal, in the presence of acidic zeolite catalyst(s) to produce the desired alkyl aromatic compound(s). The aromatic and preferably also the olefin feeds are treated substantially to remove contaminants, particularly the nitrogen compounds contained therein, before they are brought together for reaction in the presence of the zeolite catalyst(s). In accordance with the present invention, it has been found that feed pretreatment for removal of nitrogen compounds significantly improves the run length and life of the acidic zeolite catalyst(s). The feed pretreatment of this invention may include the steps of distillation, extraction, and/or adsorption by solid adsorbent, which may be regenerated in accordance with further embodiments of this invention.Type: ApplicationFiled: July 6, 2010Publication date: October 21, 2010Inventors: Shyh-Yuan Hwang, Maruti Bhandarkar, Chung-Ming Chi, Waheed Mukaddam, Frank Demers, Richard F. Guarino, Dana E. Johnson
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Patent number: 7777086Abstract: Improved integrated processes for the production of alkyl aromatic compounds are disclosed wherein aromatic compounds which may be treated for removal of deleterious substances are reacted with olefin compounds, which may also be treated for contaminant removal, in the presence of acidic zeolite catalyst(s) to produce the desired alkyl aromatic compound(s). The aromatic and preferably also the olefin feeds are treated substantially to remove contaminants, particularly the nitrogen compounds contained therein, before they are brought together for reaction in the presence of the zeolite catalyst(s). In accordance with the present invention, it has been found that feed pretreatment for removal of nitrogen compounds significantly improves the run length and life of the acidic zeolite catalyst(s). The feed pretreatment of this invention may include the steps of distillation, extraction, and/or adsorption by solid adsorbent, which may be regenerated in accordance with further embodiments of this invention.Type: GrantFiled: February 27, 2003Date of Patent: August 17, 2010Assignee: Stone & Webster, Inc.Inventors: Shyh-Yuan Hwang, Maruti Bhandarkar, Chung-Ming Chi, Waheed Mukaddam, Frank Demers, Richard F. Guarino, Dana E Johnson
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Patent number: 7449420Abstract: Improved processes are provided for the production of alkyl aromatic compounds using zeolite catalyst(s) and for periodic reactivation in situ of zeolite catalyst(s) that have at least in part become deactivated. Processes according to this invention are typically carried out in a reaction section loaded with catalyst(s) wherein a desired alkyl aromatic compound is produced from feed aromatic and olefin compounds followed by a separation section in which the desired product is isolated and recovered. Alkylation, transalkylation, and/or isomerization reactions that occur in the reaction section are carried out in liquid phase or partial liquid phase over the said zeolite catalyst(s).Type: GrantFiled: March 19, 2004Date of Patent: November 11, 2008Assignee: Stone & Webster Inc.Inventors: Shyh-Yuan Henry Hwang, Waheed A. Mukaddam, Francis A. Demers, Dana Johnson
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Publication number: 20080135399Abstract: Apparatus and methods are disclosed for using an ultraviolet laser system to decompose selected chemical substances in water. More particularly, this invention provides methods and apparatus whereby various environmental pollutants in water are rapidly decomposed to very low concentrations, consistent with environmental discharge regulations, use requirements, and/or applicable health standards, by means of exposure to ultraviolet laser irradiation (10, 20), either with or without one or more catalysts and/or other chemical additives to facilitate or enhance the decomposition process.Type: ApplicationFiled: August 9, 2006Publication date: June 12, 2008Inventors: Waheed Mukaddam, Allan R. Thompson, Charles W. Moores
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Publication number: 20070170121Abstract: Apparatus and methods are disclosed for using an ultraviolet laser system to decompose selected chemical substances in water. More particularly, this invention provides methods and apparatus whereby various environmental pollutants in water are rapidly decomposed to very low concentrations, consistent with environmental discharge regulations, use requirements, and/or applicable health standards, by means of exposure to ultraviolet laser irradiation (10, 20), either with or without one or more catalysts and/or other chemical additives to facilitate or enhance the decomposition process.Type: ApplicationFiled: March 22, 2005Publication date: July 26, 2007Inventors: Waheed Mukaddam, Allan Thompson, Charles Moores
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Publication number: 20050143612Abstract: Improved integrated processes for the production of alkyl aromatic compounds are disclosed wherein aromatic compounds which may be treated for removal of deleterious substances are reacted with olefin compounds, which may also be treated for contaminant removal, in the presence of acidic zeolite catalyst(s) to produce the desired alkyl aromatic compound(s). The aromatic and preferably also the olefin feeds are treated substantially to remove contaminants, particularly the nitrogen compounds contained therein, before they are brought together for reaction in the presence of the zeolite catalyst(s). In accordance with the present invention, it has been found that feed pretreatment for removal of nitrogen compounds significantly improves the run length and life of the acidic zeolite catalyst(s). The feed pretreatment of this invention may include the steps of distillation, extraction, and/or adsorption by solid adsorbent, which may be regenerated in accordance with further embodiments of this invention.Type: ApplicationFiled: February 27, 2003Publication date: June 30, 2005Inventors: Shyh-Yuan Hwang, Maruti Bhandarkar, Chung-Ming Chi, Waheed Mukaddam, Frank Demers, Richard Guarino, Dana Johnson
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Publication number: 20040242404Abstract: Improved processes are provided for the production of alkyl aromatic compounds using zeolite catalyst(s) and for periodic reactivation in situ of zeolite catalyst(s) that have at least in part become deactivated. Processes according to this invention are typically carried out in a reaction section loaded with catalyst(s) wherein a desired alkyl aromatic compound is produced from feed aromatic and olefin compounds followed by a separation section in which the desired product is isolated and recovered. Alkylation, transalkylation, and/or isomerization reactions that occur in the reaction section are carried out in liquid phase or partial liquid phase over the said zeolite catalyst(s).Type: ApplicationFiled: March 19, 2004Publication date: December 2, 2004Inventors: Shyh-Yuan Henry Hwang, Waheed A. Mukaddam, Francis A. Demers, Dana Johnson
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Patent number: 4357175Abstract: An environmentally acceptable method for cleaning the interior of vessels comprises contacting the interior of a vessel with a solvent for the contaminant contained therein to produce a contaminated solvent, collecting the contaminated solvent from the vessel, separating essentially all of the contaminant from the contaminated solvent to recover essentially all of the solvent essentially free of the contaminant and produce a contaminant composition which is incineratable or can be made incineratable by blending with a combustible composition, such as fuel oil.The contaminant may be separated from the contaminated solvent by distillation; in which case the overhead product may be washed with sulfuric acid and then neutralized with a base.Type: GrantFiled: July 8, 1981Date of Patent: November 2, 1982Assignee: Stauffer Chemical CompanyInventors: Chester G. Buffington, Herbert H. Fang, Barry A. Friedfeld, Thaddeus J. Kaniecki, John W. Kennedy, Chong-tan Liu, Morton Sternberg, Henry H. Feng, Paul Y. Chen, Waheed Mukaddam, Pattamadai E. Narasimhan