Patents by Inventor Mohammad R. Hajaligol
Mohammad R. Hajaligol 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: 6637439Abstract: A tobacco smoking mixture is provided that includes tobacco and at least one inorganic particulate material. The at least one inorganic particulate material is effective to reduce the temperature of a burning portion of the tobacco smoking mixture upon combustion/pyrolysis thereof. The at least one inorganic particulate material can be an inorganic carbonate, an inorganic hydrate, an inorganic oxide, an inorganic phosphate, a carbon material or combinations thereof.Type: GrantFiled: August 31, 2001Date of Patent: October 28, 2003Assignee: Philip Morris IncorporatedInventors: Mohammad R. Hajaligol, A. Clifton Lilly, Jr.
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Patent number: 6607576Abstract: The invention relates generally to aluminum containing iron-base alloys useful as electrical resistance heating elements. The aluminum containing iron-base alloys have improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The alloy has an entirely ferritic microstructure which is free of austenite and includes, in weight %, over 4% Al, ≦1% Cr and either ≧0.05% Zr or Zro2 stringers extending perpendicular to an exposed surface of the heating element or ≧0.1% oxide dispersoid particles. The alloy can contain 14-32% Al, ≦2% Ti, ≦2% Mo, ≦1% Zr, ≦1% C, ≦0.1% B. ≦30% oxide dispersoid and/or electrically insulating or electrically conductive covalent ceramic particles, ≦1% rare earth metal, ≦1% oxygen, ≦3% Cu, balance Fe.Type: GrantFiled: October 14, 1998Date of Patent: August 19, 2003Assignee: Chrysalis Technologies IncorporatedInventors: Vinod K. Sikka, Seetharama C. Deevi, Grier S. Fleischhauer, Mohammad R. Hajaligol, A. Clifton Lilly, Jr.
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Publication number: 20030117619Abstract: An apparatus for monitoring vapor phase polycyclic aromatic hydrocarbons in a high-temperature environment has an excitation source producing electromagnetic radiation, an optical path having an optical probe optically communicating the electromagnetic radiation received at a proximal end to a distal end, a spectrometer or polychromator, a detector, and a positioner coupled to the first optical path. The positioner can slidably move the distal end of the optical probe to maintain the distal end position with respect to an area of a material undergoing combustion. The emitted wavelength can be directed to a detector in a single optical probe 180° backscattered configuration, in a dual optical probe 180° backscattered configuration or in a dual optical probe 90° side scattered configuration. The apparatus can be used to monitor an emitted wavelength of energy from a polycyclic aromatic hydrocarbon as it fluoresces in a high temperature environment.Type: ApplicationFiled: December 20, 2001Publication date: June 26, 2003Inventors: Tuan Vo-Dinh, Mohammad R. Hajaligol
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Publication number: 20030082066Abstract: A powder metallurgical process of preparing a sheet from a powder having an intermetallic alloy composition such as an iron, nickel or titanium aluminide. The sheet can be manufactured into electrical resistance heating elements having improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The iron aluminide has an entirely ferritic microstructure which is free of austenite and can include, in weight %, 4 to 32% Al, and optional additions such as ≦1% Cr, ≧0.05% Zr ≦2% Ti, ≦2% Mo, ≦1% Ni, ≦0.75% C, ≦0.1% B, ≦1% submicron oxide particles and/or electrically insulating or electrically conductive covalent ceramic particles, ≦1% rare earth metal, and/or ≦3% Cu.Type: ApplicationFiled: October 31, 2001Publication date: May 1, 2003Inventors: Mohammad R. Hajaligol, Clive Scorey, Vinod K. Sikka, Seetharama C. Deevi, Grier Fleischhauer, A. Clifton Lilly, Randall M. German
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Publication number: 20030041867Abstract: A tobacco smoking mixture is provided that includes tobacco and at least one inorganic particulate material. The at least one inorganic particulate material is effective to reduce the temperature of a burning portion of the tobacco smoking mixture upon combustion/pyrolysis thereof. The at least one inorganic particulate material can be an inorganic carbonate, an inorganic hydrate, an inorganic oxide, an inorganic phosphate, a carbon material or combinations thereof.Type: ApplicationFiled: August 31, 2001Publication date: March 6, 2003Inventors: Mohammad R. Hajaligol, A. Clifton Lilly
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Patent number: 6332936Abstract: A powder metallurgical process of preparing a sheet from a powder having an intermetallic alloy composition such as an iron, nickel or titanium aluminide. The sheet can be manufactured into electrical resistance heating elements having improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The iron aluminide has an entirely ferritic microstructure which is free of austenite and can include, in weight %, 4 to 32% Al, and optional additions such as ≦1% Cr, ≧0.05% Zr ≦2% Ti, ≦2% Mo, ≦1% Ni, ≦0.75% C, ≦0.1% B, ≦1% submicron oxide particles and/or electrically insulating or electrically conductive covalent ceramic particles, ≦1% rare earth metal, and/or ≦3% Cu.Type: GrantFiled: September 20, 1999Date of Patent: December 25, 2001Assignee: Chrysalis Technologies IncorporatedInventors: Mohammad R. Hajaligol, Clive Scorey, Vinod K. Sikka, Seetharama C. Deevi, Grier Fleischhauer, A. Clifton Lilly, Jr., Randall M. German
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Patent number: 6294130Abstract: A metallic alloy composition is manufactured into products such as press formed or stamped products or rolled products such as sheet, strip, rod, wire or band by one or more cold working steps with intermediate or final flash annealing. The method can include cold rolling an iron, nickel or titanium aluminide alloy and annealing the cold worked product in a furnace by infrared heating. The flash annealing is preferably carried out by rapidly heating the cold worked product to an elevated temperature for less than one minute. The flash annealing is effective to reduce surface hardness of the cold worked product sufficiently to allow further cold working. The product to be cold worked can be prepared by casting the alloy or by a powder metallurgical technique such as tape casting a mixture of metal powder and a binder, roll compacting a mixture of the powder and a binder or plasma spraying the powder onto a substrate.Type: GrantFiled: March 24, 2000Date of Patent: September 25, 2001Assignee: Chrysalis Technologies IncorporatedInventors: Mohammad R. Hajaligol, Vinod K. Sikka
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Patent number: 6293987Abstract: A powder metallurgical process of preparing a sheet from a powder having an intermetallic alloy composition such as an iron, nickel or titanium aluminide. The sheet can be manufactured into electrical resistance heating elements having improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The iron aluminide has an entirely ferritic microstructure which is free of austenite and can include, in weight %, 4 to 32% Al, and optional additions such as ≦1% Cr, ≧0.05% Zr ≦2% Ti, ≦2% Mo, ≦1% Ni, ≦0.75% C, ≦0.1% B, ≦1% submicron oxide particles and/or electrically insulating or electrically conductive covalent ceramic particles, ≦1% rare earth metal, and/or ≦3 % Cu.Type: GrantFiled: December 7, 1999Date of Patent: September 25, 2001Assignee: Chrysalis Technologies IncorporatedInventors: Mohammad R. Hajaligol, Grier Fleischhauer, Randall M. German
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Patent number: 6280682Abstract: The invention relates generally to aluminum containing iron-base alloys useful as electrical resistance heating elements. The aluminum containing iron-base alloys have improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The alloy has an entirely ferritic microstructure which is free of austenite and includes, in weight %, over 4% Al, ≦1% Cr and either ≧0.05% Zr or ZrO2 stringers extending perpendicular to an exposed surface of the heating element or ≧0.1% oxide dispersoid particles. The alloy can contain 14-32% Al, ≦2% Ti, ≦2% Mo, ≦1% Zr, ≦1% C, ≦0.1% B, ≦30% oxide dispersoid and/or electrically insulating or electrically conductive covalent ceramic particles, ≦1% rare earth metal, ≦1% oxygen, ≦3% Cu, balance Fe.Type: GrantFiled: September 20, 1999Date of Patent: August 28, 2001Assignee: Chrysalis Technologies IncorporatedInventors: Vinod K. Sikka, Seetharama C. Deevi, Grier S. Fleischhauer, Mohammad R. Hajaligol, A. Clifton Lilly, Jr.
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Patent number: 6143241Abstract: A metallic alloy composition is manufactured into products such as press formed or stamped products or rolled products such as sheet, strip, rod, wire or band by one or more cold working steps with intermediate or final flash annealing. The method can include cold rolling an iron, nickel or titanium aluminide alloy and annealing the cold worked product in a furnace by infrared heating. The flash annealing is preferably carried out by rapidly heating the cold worked product to an elevated temperature for less than one minute. The flash annealing is effective to reduce surface hardness of the cold worked product sufficiently to allow further cold working. The product to be cold worked can be prepared by casting the alloy or by a powder metallurgical technique such as tape casting a mixture of metal powder and a binder, roll compacting a mixture of the powder and a binder or plasma spraying the powder onto a substrate.Type: GrantFiled: February 9, 1999Date of Patent: November 7, 2000Assignee: Chrysalis Technologies, IncorporatedInventors: Mohammad R. Hajaligol, Vinod K. Sikka
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Patent number: 6053176Abstract: A system for heating a cigarette to evolve an aerosol upon consumer request comprises a cigarette and a lighter. The lighter includes a housing into which the cigarette is inserted, and a stationary heater inside the housing is positioned in thermal proximity to the cigarette. The cigarette is rotatably mounted inside the housing. When a puff is desired, heat is applied to the cigarette to produce the aerosol. Prior to the next puff, the cigarette is slightly rotated to position a fresh portion of the cigarette in proximity to the stationary heater, and this procedure is repeated until the cigarette is spent.Type: GrantFiled: February 23, 1999Date of Patent: April 25, 2000Assignee: Philip Morris IncorporatedInventors: John M. Adams, Michael S. Braunshteyn, Mohammad R. Hajaligol, Wesley G. Sanderson
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Patent number: 6030472Abstract: A powder metallurgical process of preparing a sheet from a powder having an intermetallic alloy composition such as an iron, nickel or titanium aluminide. The sheet can be manufactured into electrical resistance heating elements having improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The iron aluminide has an entirely ferritic microstructure which is free of austenite and can include, in weight %, 4 to 32% Al, and optional additions such as .ltoreq.1% Cr, .gtoreq.0.05% Zr.ltoreq.2% Ti, .ltoreq.2% Mo, .ltoreq.1% Ni, .ltoreq.0.75% C, .ltoreq.0.1% B, .ltoreq.1% submicron oxide particles and/or electrically insulating or electrically conductive covalent ceramic particles, .ltoreq.1% rare earth metal, and/or .ltoreq.3% Cu.Type: GrantFiled: December 4, 1997Date of Patent: February 29, 2000Assignee: Philip Morris IncorporatedInventors: Mohammad R. Hajaligol, Clive Scorey, Vinod K. Sikka, Seetharama C. Deevi, Grier Fleischhauer, A. Clifton Lilly, Jr., Randall M. German
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Patent number: 5976458Abstract: The invention relates generally to aluminum containing iron-base alloys useful as electrical resistance heating elements. The aluminum containing iron-base alloys have improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The alloy has an entirely ferritic microstructure which is free of austenite and includes, in weight %, over 4% Al, .ltoreq.1% Cr and either .gtoreq.0.05% Zr or ZrO.sub.2 stringers extending perpendicular to an exposed surface of the heating element or .gtoreq.0.1% oxide dispersoid particles. The alloy can contain 14-32% Al, .ltoreq.2% Ti, .ltoreq.2% Mo, .ltoreq.1% Zr, .ltoreq.1% C, .ltoreq.0.1% B, .ltoreq.30% oxide dispersoid and/or electrically insulating or electrically conductive covalent ceramic particles, .ltoreq.1% rare earth metal, .ltoreq.1% oxygen, .ltoreq.3% Cu, balance Fe.Type: GrantFiled: January 3, 1996Date of Patent: November 2, 1999Assignee: Philip Morris IncorporatedInventors: Vinod K. Sikka, Seetharama C. Deevi, Grier S. Fleischhauer, Mohammad R. Hajaligol, A. Clifton Lilly, Jr.
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Patent number: 5954979Abstract: A novel electrical smoking system and method of establishing resistance to draw upon a cigarette while smoking a cigarette in an electrical smoking system comprising the step of operatively interposing a frit between a source of ambient air and the cigarette.Type: GrantFiled: October 16, 1997Date of Patent: September 21, 1999Assignee: Philip Morris IncorporatedInventors: Mary Ellen Counts, William J. Crowe, John L. Felter, Grier S. Fleischhauer, Mohammad R. Hajaligol, Patrick H. Hayes, Willie G. Houck, H. Neal Nunnally
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Patent number: 5934289Abstract: A novel photonic-electronic smoking system comprising a cigarette and a photonic operated electronic lighter, together with methodologies of smoking a cigarette, the lighter comprising a receptacle for removably receiving a cigarette; a photonic source; an optical train establishing a plurality of optical pathways from said photonic source to a plurality of locations at the received cigarette; a source of electrical power; a puff sensor responsive to a drawing action upon a cigarette received by said receptacle; and a controller responsive to said puff sensor for controllably communicating said source of electrical power with said photonic source so that upon drawing action upon the received cigarette, the photonic source discharges along said optical pathway to heat a region of said cigarette adjacent at least one of said locations.Type: GrantFiled: October 20, 1997Date of Patent: August 10, 1999Assignee: Philip Morris IncorporatedInventors: Michael L. Watkins, Mohammad R. Hajaligol
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Patent number: 5878752Abstract: Methods and apparatuses for cleaning an electrical lighter are provided. A sleeve, e.g., ceramic or metal, surrounds the heater fixture, and a resistive heating element is in thermal proximity with the sleeve. The resistive heating element is either a dedicated element or the cigarette heating elements. The sleeve serves as a aerosol barrier and condensate accumulator to protect other components. Periodically, e.g., substantially contemporaneously with a battery recharge, the heating element is activated to thermally liberate condensates deposited on the sleeve during smoking and also heats, and thereby cleans, other components. Also, a cleaning element is optionally inserted into the cigarette receptacle of the electrical lighter or placed at the exit thereof to absorb, attract and/or catalytically break down the thermally liberated condensates. The sleeve also directs a desired flow path for drawn air within an electrical lighter toward the cigarette.Type: GrantFiled: November 25, 1996Date of Patent: March 9, 1999Assignee: Philip Morris IncorporatedInventors: John M. Adams, William J. Crowe, Grier S. Fleischhauer, Jay A. Fournier, Mohammad R. Hajaligol, Willie G. Houck, Jr., Donald B. Losee, Constance H. Morgan, John D. Naworal, H. Neal Nunnally, John B. Paine, III, Wynn R. Raymond, Robert L. Ripley, Jeffrey I. Seeman, Francis M. Sprinkel, Michael L. Watkins
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Patent number: 5665262Abstract: A cylindrical tube is provided of a mechanically strong and flexible electrical conductor such as a metal and has a plurality of separated regions. An electrically insulating layer such as a ceramic is applied on the outer surface except for one exposed portion. Electrically resistive heaters are then applied to the insulated regions and are electrically connected at one end to the underlying electrical conducting region. The electrical conductor is connected to the negative terminal of a power source. The other end of all the heaters are adapted to be connected to the positive terminal of the source. Accordingly, an electrically resistive heating circuit is formed wherein the tube serves as a common for all of the heating elements. The tubular heater can comprise an exposed end hub with a plurality of blades extending therefrom. Each blade can have an individual heater deposited thereon. Alternatively, every other blade can have a heater deposited thereon.Type: GrantFiled: January 9, 1995Date of Patent: September 9, 1997Assignee: Philip Morris IncorporatedInventors: Mohammad R. Hajaligol, Grier S. Fleischhauer, Seetharama C. Deevi, Charles T. Higgins, Patrick H. Hayes, Herbert Herman, Robert V. Gansert, Alfred L. Collins, Billy J. Keen, Jr., Bernard C. Laroy, A. Clifton Lilly, Jr.
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Patent number: 5620651Abstract: The invention relates generally to aluminum containing iron-base alloys useful as electrical resistance heating elements. The aluminum containing iron-base alloys have improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The alloy has an entirely ferritic microstructure which is free of austenite and includes, in weight %, over 4% Al, .ltoreq.1% Cr and either .gtoreq.0.05% Zr or ZrO.sub.2 stringers extending perpendicular to an exposed surface of the heating element or .gtoreq.0.1% oxide dispersoid particles. The alloy can contain 14-32% Al, .ltoreq.2% Ti, .ltoreq.2% Mo, .ltoreq.1% Zr, .ltoreq.1% C, .ltoreq.0.1% B, .ltoreq.30% oxide dispersoid and/or electrically insulating or electrically conductive covalent ceramic particles, .ltoreq.1% rare earth metal, .ltoreq.1% oxygen, .ltoreq.3% Cu, balance Fe.Type: GrantFiled: April 20, 1995Date of Patent: April 15, 1997Assignee: Philip Morris IncorporatedInventors: Vinod K. Sikka, Seetharama C. Deevi, Grier S. Fleischhauer, Mohammad R. Hajaligol, A. Clifton Lilly, Jr.
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Patent number: 5595706Abstract: The invention relates generally to aluminum containing iron-base alloys useful as electrical resistance heating elements. The aluminum containing iron-base alloys have a disordered body centered cubic structure and improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The alloy has an entirely ferritic microstructure which is free of austenite and includes, in weight %, 4 to 9.5% Al, 0.2-2.0% Ti, 0.5-2% Mo, 0.1 to 0.8% Zr, 0.01-0.5% C, balance Fe.Type: GrantFiled: December 29, 1994Date of Patent: January 21, 1997Assignee: Philip Morris IncorporatedInventors: Vinod K. Sikka, Seetharama C. Deevi, Grier S. Fleischhauer, Mohammad R. Hajaligol, A. Clifton Lilly, Jr.
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Patent number: 5591368Abstract: A provided heater comprises a supporting hub and a plurality of electrically resistive heater blades defining a receptacle to receive an inserted cigarette. Each blade comprises a first heater blade leg having a first end and a second end and extending at the first end from the supporting hub, a second heater blade leg having a first end and a second end, and a connecting section connecting the second end of the first leg and the first end of the second leg. The second end of the second leg extends toward the supporting hub and is electrically insulated therefrom. A resistive heating circuit is formed to heat the electrically resistive heater blade which in turn heats the inserted cigarette. The first and second legs are separated by a gap to permit entrainment of flavor substances into the heated cigarette upon drawing by a smoker.Type: GrantFiled: April 20, 1995Date of Patent: January 7, 1997Assignee: Philip Morris IncorporatedInventors: Grier S. Fleischhauer, Patrick H. Hayes, Constance H. Morgan, Mohammad R. Hajaligol, Michael L. Watkins, Walter A. Nichols, David E. Sharpe, Mary E. Counts