Patents by Inventor William A. Heeschen
William A. Heeschen 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: 10272541Abstract: A polishing layer analyzer is provided, wherein the analyzer is configured to detect macro inhomogeneities is polymeric sheets and to classify the polymeric sheets as either acceptable or suspect.Type: GrantFiled: January 22, 2016Date of Patent: April 30, 2019Assignees: Rohm and Haas Electronic Matericals CMP Holdings, Inc., Dow Global Technologies LLCInventors: Scott Chang, Jeff Tsai, Francis V. Acholla, Andrew Wank, Mark Gazze, William A. Heeschen, James David Tate, Leo H. Chiang, Swee-Teng Chin
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Patent number: 9770808Abstract: A method of manufacturing chemical mechanical polishing pads is provided, wherein an automated inspection system is configured to detect macro inhomogeneities is skived sheets and to classify the skived sheets as either acceptable or suspect; wherein the acceptable skived sheets are further processed to form polishing layers of chemical mechanical polishing pads.Type: GrantFiled: January 12, 2016Date of Patent: September 26, 2017Assignees: Rohm and Haas Electronic Materials CMP Holdings, Inc., Dow Global Technologies LLCInventors: Francis V. Acholla, Andrew Wank, Mark Gazze, Scott Chang, Jeff Tsai, William A. Heeschen, James David Tate, Leo H. Chiang, Swee-Teng Chin
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Patent number: 9737971Abstract: A chemical mechanical polishing pad, polishing layer analyzer is provided, wherein the analyzer is configured to detect macro inhomogeneities is polymeric sheets and to classify the polymeric sheets as either acceptable or suspect.Type: GrantFiled: January 12, 2016Date of Patent: August 22, 2017Assignees: Rohm and Haas Electronic Materials CMP Holdings, Inc., Dow Global Technologies LLCInventors: Francis V. Acholla, Andrew Wank, Mark Gazze, Scott Chang, Jeff Tsai, William A. Heeschen, James David Tate, Leo H. Chiang, Swee-Teng Chin
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Publication number: 20170209979Abstract: A polishing layer analyzer is provided, wherein the analyzer is configured to detect macro inhomogeneities is polymeric sheets and to classify the polymeric sheets as either acceptable or suspect.Type: ApplicationFiled: January 22, 2016Publication date: July 27, 2017Inventors: Scott Chang, Jeff Tsai, Francis V. Acholla, Andrew Wank, Mark Gazze, William A. Heeschen, James David Tate, Leo H. Chiang, Swee-Teng Chin
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Publication number: 20170197290Abstract: A chemical mechanical polishing pad, polishing layer analyzer is provided, wherein the analyzer is configured to detect macro inhomogeneities is polymeric sheets and to classify the polymeric sheets as either acceptable or suspect.Type: ApplicationFiled: January 12, 2016Publication date: July 13, 2017Inventors: Francis V. Acholla, Andrew Wank, Mark Gazze, Scott Chang, Jeff Tsai, William A. Heeschen, James David Tate, Leo H. Chiang, Swee-Teng Chin
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Publication number: 20170197295Abstract: A method of manufacturing chemical mechanical polishing pads is provided, wherein an automated inspection system is configured to detect macro inhomogeneities is skived sheets and to classify the skived sheets as either acceptable or suspect; wherein the acceptable skived sheets are further processed to form polishing layers of chemical mechanical polishing pads.Type: ApplicationFiled: January 12, 2016Publication date: July 13, 2017Inventors: Francis V. Acholla, Andrew Wank, Mark Gazze, Scott Chang, Jeff Tsai, William A. Heeschen, James David Tate, Leo H. Chiang, Swee-Teng Chin
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Patent number: 8875562Abstract: The present invention is directed to a method of locating leaks in a substrate (30) having a first and a second surface wherein the substrate (30) is adapted for preventing the flow of a fluid, or components contained in the fluid, through the substrate (30) from the first surface to the second surface, and a system (10) useful in the method, wherein the method comprises: a) isolating the first surface from the second surface; b) creating a pressure differential between the first surface and the second surface wherein the pressure on the first surface is higher than the pressure on the second surface; c) contacting the second surface or the exit (32) of the device (11) containing the substrate (30) with a baffle (23), wherein the baffle (23) has a plurality of interconnected parts which form a pattern and the baffle (23) is of a sufficient size to cover the second surface of the substrate (30) or the fluid exit point (32) of the device the substrate (30) is disposed in and the parts of the baffle (23) createType: GrantFiled: January 28, 2011Date of Patent: November 4, 2014Assignee: Dow Global Technologies LLCInventors: Stewart P. Wood, William A. Heeschen
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Patent number: 8324287Abstract: Prepare a polymeric foam from a foamable polymer composition containing a thermoplastic polymer composition and a blowing agent wherein 75 percent or more by weight of all non-halogenated polymers in the foamable polymer composition is a styrene-acrylonitrile copolymer composition having a polymerized acrylonitrile content distribution with a positive skew in a copolymerized AN content distribution and a positive percent difference between the mean and the median copolymerized AN content distribution.Type: GrantFiled: March 30, 2009Date of Patent: December 4, 2012Assignee: Dow Global Technologies LLCInventors: Lawrence S. Hood, Stephane Costeux, William A. Heeschen
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Publication number: 20120297863Abstract: The present invention is directed to a method of locating leaks in a substrate (30) having a first and a second surface wherein the substrate (30) is adapted for preventing the flow of a fluid, or components contained in the fluid, through the substrate (30) from the first surface to the second surface, and a system (10) useful in the method, wherein the method comprises: a) isolating the first surface from the second surface; b) creating a pressure differential between the first surface and the second surface wherein the pressure on the first surface is higher than the pressure on the second surface; c) contacting the second surface or the exit (32) of the device (11) containing the substrate (30) with a baffle (23), wherein the baffle (23) has a plurality of interconnected parts which form a pattern and the baffle (23) is of a sufficient size to cover the second surface of the substrate (30) or the fluid exit point (32) of the device the substrate (30) is disposed in and the parts of the baffle (23) createType: ApplicationFiled: January 28, 2011Publication date: November 29, 2012Applicant: Dow Global Technologies LLCInventors: Stewart P. Wood, William A. Heeschen
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Publication number: 20110028577Abstract: Prepare a polymeric foam from a foamable polymer composition containing a thermoplastic polymer composition and a blowing agent wherein 75 percent or more by weight of all non-halogenated polymers in the foamable polymer composition is a styrene-acrylonitrile copolymer composition having a polymerized acrylonitrile content distribution with a positive skew in a copolymerized AN content distribution and a positive percent difference between the mean and the median copolymerized AN content distribution.Type: ApplicationFiled: March 30, 2009Publication date: February 3, 2011Inventors: Lawrence S. Hood, Stephane Costeux, William A. Heeschen
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Patent number: 7843560Abstract: The present invention relates to a turbidity calibration standard comprising: a number of from 1 to 5 sequentially-interfaced layers, wherein each layer independently comprises a light-permeable polymer or light-permeable interpolymer; a measured light transmission modulating amount of at least one light transmission modulator, which is distributed in any one or more of the layers; and a light-permeable container, which contains the layers and the at least one light transmission modulator. Also, the invention relates to methods of making and using the standard, and kits comprising the standard.Type: GrantFiled: August 21, 2008Date of Patent: November 30, 2010Assignee: Dow Global Technologies Inc.Inventors: Richard S. Harner, J. Keith Harris, William A. Heeschen, Mary Beth Seasholtz
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Publication number: 20100118130Abstract: The invention is an image capturing device comprising a lens to capture the image of the one or more samples which are located in an image capturing chamber, a nest receptacle to hold the one or more samples during imaging, and at least one illuminating source to illuminate the one or more samples. The chamber, lighting and nest receptacle are configured to minimize undesired reflections and improve the image quality.Type: ApplicationFiled: November 10, 2009Publication date: May 13, 2010Inventors: J. Keith Harris, David A. Hayes, Richard S. Harner, William A. Heeschen
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Publication number: 20090059218Abstract: The present invention relates to a turbidity calibration standard comprising: a number of from 1 to 5 sequentially-interfaced layers, wherein each layer independently comprises a light-permeable polymer or light-permeable interpolymer; a measured light transmission modulating amount of at least one light transmission modulator, which is distributed in any one or more of the layers; and a light-permeable container, which contains the layers and the at least one light transmission modulator. Also, the invention relates to methods of making and using the standard, and kits comprising the standard.Type: ApplicationFiled: August 21, 2008Publication date: March 5, 2009Inventors: Richard S. Harner, J. Keith Harris, William A. Heeschen, Mary Beth Seasholtz
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Patent number: 5311283Abstract: The presence and concentration of an optically active constituent of a fluid medium is determined in-situ by immersing in the fluid medium a probe constructed to pass plane polarized light through the fluid medium in first and second passes so as to induce an optical rotation to the plane of polarization. The light is analyzed after the second pass in a manner to provide a plurality of light components whose individual intensities are affected by the induced optical rotation. A light intensity ratio is determined for the individual light components and compared to light intensity ratios obtained from like fluid media having known concentrations of the optically active constituent therein to permit determination of the concentration of the optically active constituent.Type: GrantFiled: September 5, 1991Date of Patent: May 10, 1994Assignee: The Dow Chemical CompanyInventor: William A. Heeschen