Patents by Inventor Mary A. Leugers
Mary A. Leugers 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: 9446497Abstract: A multilayer chemical mechanical polishing pad is provided, having: a polishing layer having a polishing surface, a counterbore opening, a polishing layer interfacial region parallel to the polishing surface; a porous subpad layer having a bottom surface and a porous subpad layer interfacial region parallel to the bottom surface; and, a broad spectrum, endpoint detection window block comprising, comprises an olefin copolymer; wherein the window block exhibits a uniform chemical composition across its thickness; wherein the polishing layer interfacial region and the porous subpad layer interfacial region form a coextensive region; wherein the multilayer chemical mechanical polishing pad has a through opening that extends from the polishing surface to the bottom surface of the porous subpad layer; wherein the counterbore opening opens on the polishing surface, enlarges the through opening and forms a ledge; and, wherein the window block is disposed within the counterbore opening.Type: GrantFiled: March 7, 2013Date of Patent: September 20, 2016Assignees: Rohm and Haas Electronic Materials CMP Holdings, Inc., Dow Global Technologies LLCInventors: Angus Repper, Mary A. Leugers, David B. James, Marty W. DeGroot
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Patent number: 9186772Abstract: A chemical mechanical polishing pad is provided, comprising: a polishing layer having a polishing surface; and, a broad spectrum, endpoint detection window block having a thickness along an axis perpendicular to a plane of the polishing surface; wherein the broad spectrum, endpoint detection window block, comprises a cyclic olefin addition polymer; wherein the broad spectrum, endpoint detection window block exhibits a uniform chemical composition across its thickness; wherein the broad spectrum, endpoint detection window block exhibits a spectrum loss ?40%; and, wherein the polishing surface is adapted for polishing a substrate selected from a magnetic substrate, an optical substrate and a semiconductor substrate.Type: GrantFiled: March 7, 2013Date of Patent: November 17, 2015Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: Angus Repper, David B. James, Mary A. Leugers
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Publication number: 20140256232Abstract: A multilayer chemical mechanical polishing pad is provided, having: a polishing layer having a polishing surface, a counterbore opening, a polishing layer interfacial region parallel to the polishing surface; a porous subpad layer having a bottom surface and a porous subpad layer interfacial region parallel to the bottom surface; and, a broad spectrum, endpoint detection window block comprising, comprises an olefin copolymer; wherein the window block exhibits a uniform chemical composition across its thickness; wherein the polishing layer interfacial region and the porous subpad layer interfacial region form a coextensive region; wherein the multilayer chemical mechanical polishing pad has a through opening that extends from the polishing surface to the bottom surface of the porous subpad layer; wherein the counterbore opening opens on the polishing surface, enlarges the through opening and forms a ledge; and, wherein the window block is disposed within the counterbore opening.Type: ApplicationFiled: March 7, 2013Publication date: September 11, 2014Applicants: Dow Global Technologies LLC, Rohm and Haas Electronic Materials CMP Holdings Inc.Inventors: Angus Repper, Mary A. Leugers, David B. James, Marty W. DeGroot
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Publication number: 20140256231Abstract: A multilayer chemical mechanical polishing pad is provided, having: a polishing layer having a polishing surface, a counterbore opening, a polishing layer interfacial region parallel to the polishing surface; a porous subpad layer having a bottom surface and a porous subpad layer interfacial region parallel to the bottom surface; and, a broad spectrum, endpoint detection window block comprising a cyclic olefin addition polymer; wherein the window block exhibits a uniform chemical composition across its thickness; wherein the polishing layer interfacial region and the porous subpad layer interfacial region form a coextensive region; wherein the multilayer chemical mechanical polishing pad has a through opening that extends from the polishing surface to the bottom surface of the porous subpad layer; wherein the counterbore opening opens on the polishing surface, enlarges the through opening and forms a ledge; and, wherein the window block is disposed within the counterbore opening.Type: ApplicationFiled: March 7, 2013Publication date: September 11, 2014Applicants: Dow Global Technologies LLC, Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: Angus Repper, David B. James, Mary A. Leugers, Marty W. DeGroot
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Publication number: 20140256226Abstract: A chemical mechanical polishing pad is provided, comprising: a polishing layer having a polishing surface; and, a broad spectrum, endpoint detection window block having a thickness along an axis perpendicular to a plane of the polishing surface; wherein the broad spectrum, endpoint detection window block, comprises an olefin copolymer; wherein the olefin copolymer, comprises, as initial components: ethylene, a branched or straight chain C3-30 ?-olefin; a silane; and, optionally, a polyolefin; wherein the broad spectrum, endpoint detection window block exhibits a uniform chemical composition across its thickness; wherein the broad spectrum, endpoint detection window block exhibits a spectrum loss ?60%; and, wherein the polishing surface is adapted for polishing a substrate selected from a magnetic substrate, an optical substrate and a semiconductor substrate.Type: ApplicationFiled: March 7, 2013Publication date: September 11, 2014Inventors: Angus Repper, Mary A. Leugers, David B. James
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Publication number: 20140256225Abstract: A chemical mechanical polishing pad is provided, comprising: a polishing layer having a polishing surface; and, a broad spectrum, endpoint detection window block having a thickness along an axis perpendicular to a plane of the polishing surface; wherein the broad spectrum, endpoint detection window block, comprises a cyclic olefin addition polymer; wherein the broad spectrum, endpoint detection window block exhibits a uniform chemical composition across its thickness; wherein the broad spectrum, endpoint detection window block exhibits a spectrum loss ?40%; and, wherein the polishing surface is adapted for polishing a substrate selected from a magnetic substrate, an optical substrate and a semiconductor substrate.Type: ApplicationFiled: March 7, 2013Publication date: September 11, 2014Applicants: DOW GLOBAL TECHNOLOGIES LLC, Roham and Haas Electronic Materials CMP Holdings IncInventors: Angus Repper, David B. James, Mary A. Leugers
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Patent number: 8691174Abstract: The present invention relates to a nitrate salt-based process for preparing a graphite oxide. The invention nitrate salt-based process employs starting materials comprising a sulfuric acid, an inorganic nitrate salt, an amount of water, a first amount of chlorate salt, and a graphite.Type: GrantFiled: January 19, 2010Date of Patent: April 8, 2014Assignee: Dow Global Technologies LLCInventors: Shu Tao Chen, Michael S. Paquette, Mary A. Leugers
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Publication number: 20110280787Abstract: The present invention relates to a nitrate salt-based process for preparing a graphite oxide. The invention nitrate salt-based process employs starting materials comprising a sulfuric acid, an inorganic nitrate salt, an amount of water, a first amount of chlorate salt, and a graphite.Type: ApplicationFiled: January 19, 2010Publication date: November 17, 2011Inventors: Shu Tao Chen, Michael S. Paquette, Mary A. Leugers
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Patent number: 6855901Abstract: An apparatus and process that makes use of spectral information in the mid-infrared range (400 to 4500 cm?1) to identify recyclable materials containing barrier polymers from recyclable materials not containing barrier polymers, which includes projecting light containing the mid-infrared (MIR) range onto materials to be analyzed, dispersing the MIR light that has reflected from or passed through the materials or both into various wavelengths, measuring the intensity of the MIR light at least one wavelength responsive to differences between the materials, measuring the intensity of the MIR light at least one wavelength not responsive to differences between the materials in order to provide a reference, and comparing the measurements in order to identify barrier materials from non-barrier materials.Type: GrantFiled: April 19, 2002Date of Patent: February 15, 2005Assignee: National Recovery Technologies, Inc.Inventors: Robert D. Guenard, Muhammad A. Shafi, Terry W. Glass, Mary A. Leugers, Edward J. Sommer, Jr., John T. Rich
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Publication number: 20010043533Abstract: An optical reader/player for reading and reproducing signals stored in an optical recording medium (CD, DVD, HD-DVD) possessing specific physical characteristics. If the measured characteristics of the polymer of the optical medium do not coincide with those of polymers authorized to be used to make optical recording media for the reader/player, the optical medium will not be read or played.Type: ApplicationFiled: February 2, 2001Publication date: November 22, 2001Inventors: Jerry L. Hahnfeld, Walter C. Buzanowski, Mary A. Leugers, Marianne L. McKelvy, Henri-Luc Martin, Thomas J. Wainerdi
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Patent number: 5710713Abstract: A method of creating a library of standardized spectral data and identifying a sample by searching the standardized library for a match with the sample spectrum. The method entails determining and applying a transfer function which equalizes instrument bias between instruments and within the same instruments over time. A transfer function is specific to a particular instrument, and is based on the relationship between a reference spectrum of a standard as stored in a library and a spectrum of the standard obtained on the particular instrument of interest. This method provides enhanced library searching capabilities.Type: GrantFiled: January 18, 1996Date of Patent: January 20, 1998Assignee: The Dow Chemical CompanyInventors: Larry G. Wright, Mark A. LaPack, Wayne W. Blaser, Kenneth R. Beebe, Mary A. Leugers
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Patent number: 5545895Abstract: A method of correcting for instrumental changes that influence the spectral response of a mass spectrometer over time. The method entails determining and applying a transfer function which equalizes instrument bias between mass spectrometers and within the same mass spectrometer over time. A transfer function is specific to a particular mass spectrometer, and is based on the relationship between a reference spectrum of a standard as stored in a library and a spectrum of the standard obtained on the particular mass spectrometer of interest. This method facilitates and simplifies recalibration, provides enhanced library searching capabilities for mass spectrometry, and may permit concentration determination from mass spectral data without the need to recalibrate an instrument with multiple standards.Type: GrantFiled: March 20, 1995Date of Patent: August 13, 1996Assignee: The Dow Chemical CompanyInventors: Larry G. Wright, Mark A. LaPack, Wayne W. Blaser, Kenneth R. Beebe, Mary A. Leugers
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Patent number: 5303036Abstract: A probe for use in situ analysis of light absorbing fluids wherein light emitted from a source is collimated by a lens and transmitted through a fluid onto and substantially perpendicular to a reflector. Light is reflected by the reflector back through the fluid and focused by the lens onto a reflected light collector for transmission to analyzing apparatus. The length of the path traversed by the emitted and reflected light is adjustable.Type: GrantFiled: September 26, 1991Date of Patent: April 12, 1994Assignee: The Dow Chemical CompanyInventors: Richard D. McLachlan, Mary A. Leugers, Robert A. Bredeweg
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Patent number: 5166073Abstract: The invention is an optical sensor useful for the detection of ionizing radiation emitted from an analyte in a fluid. The sensor is composed of a permeable scintillator having a high surface area to scintillator volume ratio and an optical waveguide located in working relation to the scintillator to collect light photons generated in response to an ionizing radiation source. The sensor is especially useful for biomedical applications. Increased sensitivity allows for miniaturization and implantation in a blood vessel of a small experimental animal.Type: GrantFiled: May 5, 1989Date of Patent: November 24, 1992Assignee: The Dow Chemical CompanyInventors: Steven M. Lefkowitz, Mary A. Leugers, Steven J. Brownell, Deborah C. Helmer, Patrick E. Kastl, Ray Chrisman, Patrick W. Langvardt
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Patent number: 5125749Abstract: A probe for in situ quantitative detection of the concentration of an analyte in a sample includes a hollow elongated body adapted for single ended contact with the sample. The body has at least one optical fiber extended through the body for transmitting modulated light through the body, out a window at the forward end of the body, and along an optical axis into the sample to optically excite the analyte. A pressure transducer mounted beyond the window and spaced laterally away from the optical axis detects an acoustic response of the analyte to the modulated light. This probe is particularly suitable for performing remote photoacoustic analysis of analyte concentration in a sample.Type: GrantFiled: September 24, 1990Date of Patent: June 30, 1992Assignee: The Dow Chemical CompanyInventors: Mary A. Leugers, Michael E. Mills
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Patent number: 5046854Abstract: A photometric probe or a photometric cell having separate windows and a metallic probe body or cell body. The window(s) are sealed to the probe or cell body by brazed or frit seals which are less likely to leak after extended use in high temperature and/or high pressure industrial applications than probes and cells having gasket sealed windows. The windows can be made of sapphire, cubic zirconia, diamond, ruby, glass or quartz and, in the case of the probe, can be in the shape of an Attenuated Total Reflectance prism. The probe or cell body can be Kovar alloy or stainless steel.Type: GrantFiled: January 24, 1991Date of Patent: September 10, 1991Assignee: The Dow Chemical CompanyInventors: Joseph P. Weller, David P. Denton, Sandra V. Lange, Chester R. Norman, Mary A. Leugers, Stuart Farquharson, Jean P. Chauvel, Jr.
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Patent number: 4622853Abstract: A method and device which measures the velocity of ultrasonic waves in a moving web is disclosed. The excitation source is a laser or other device which produces short intense light pulses and the detection system is either a piezoelectric transducer or a microphone. The latter obviates any need for physical contact with the web in order to carry out tests for strength parameters as the web is manufactured.Type: GrantFiled: August 23, 1985Date of Patent: November 18, 1986Assignee: Union Camp CorporationInventor: Mary A. Leugers