Patents by Inventor Fu-chu Wen
Fu-chu Wen 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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Publication number: 20160002474Abstract: A composition includes polymer and dispersed infrared-reflective clusters of titanium dioxide primary particles. The titanium dioxide primary particles are cemented together with precipitated silica and/or alumina to form clusters. The titanium dioxide primary particles have an average particle diameter in the range of from about 0.15 to about 0.35 micron, while the clusters of titanium dioxide primary particles have an average cluster diameter in the range of from about 0.38 to about 5 microns and a geometric standard deviation (GSD) in the range of from about 1.55 to about 2.5.Type: ApplicationFiled: September 16, 2015Publication date: January 7, 2016Applicant: Cristal USA Inc.Inventors: Fu-Chu WEN, Deborah E. BUSCH, Richard L. FRICKER, Robert PROVINS, Brian David KIESSLING, David Edwin BELL
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Publication number: 20140366775Abstract: A composition includes polymer and dispersed infrared-reflective clusters of titanium dioxide primary particles. The titanium dioxide primary particles are cemented together with precipitated silica and/or alumina to form clusters. The titanium dioxide primary particles have an average particle diameter in the range of from about 0.15 to about 0.35 micron, while the clusters of titanium dioxide primary particles have an average cluster diameter in the range of from about 0.38 to about 5 microns and a geometric standard deviation (GSD) in the range of from about 1.55 to about 2.5.Type: ApplicationFiled: July 29, 2014Publication date: December 18, 2014Applicant: Cristal USA Inc.Inventors: Fu-Chu Wen, Deborah E. Busch, Richard L. Fricker, Robert Provins, Brian David Kiessling, David Edwin Bell
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Patent number: 8828519Abstract: A composition includes polymer and dispersed infrared-reflective clusters of titanium dioxide primary particles. The titanium dioxide primary particles are cemented together with precipitated silica and/or alumina to form clusters. The titanium dioxide primary particles have an average particle diameter in the range of from about 0.15 to about 0.35 micron, while the clusters of titanium dioxide primary particles have an average cluster diameter in the range of from about 0.38 to about 5 microns and a geometric standard deviation (GSD) in the range of from about 1.55 to about 2.5.Type: GrantFiled: October 5, 2011Date of Patent: September 9, 2014Assignee: Cristal USA Inc.Inventors: Fu-Chu Wen, Deborah E. Busch, Richard L. Fricker, Robert Provins, Brian David Kiessling, David Edwin Bell
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Publication number: 20130089706Abstract: A composition includes polymer and dispersed infrared-reflective clusters of titanium dioxide primary particles. The titanium dioxide primary particles are cemented together with precipitated silica and/or alumina to form clusters. The titanium dioxide primary particles have an average particle diameter in the range of from about 0.15 to about 0.35 micron, while the clusters of titanium dioxide primary particles have an average cluster diameter in the range of from about 0.38 to about 5 microns and a geometric standard deviation (GSD) in the range of from about 1.55 to about 2.5.Type: ApplicationFiled: October 5, 2011Publication date: April 11, 2013Inventors: Fu-Chu Wen, Deborah E. Busch, Richard L. Fricker, Robert Provins, Brian David Kiessling, David Edwin Bell
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Patent number: 7686882Abstract: In various embodiments, methods and compositions are provided comprising titanium dioxide and silica spacers having improved light stability for use in paper, plastic and paints.Type: GrantFiled: September 7, 2007Date of Patent: March 30, 2010Assignee: Millennium Inorganic Chemicals, Inc.Inventors: Duen-Wh Hua, Fu-Chu Wen
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Publication number: 20080047471Abstract: In various embodiments, methods and compositions are provided comprising titanium dioxide and silica spacers having improved light stability for use in paper, plastic and paints.Type: ApplicationFiled: September 7, 2007Publication date: February 28, 2008Applicant: Millennium Inorganic Chemicals, Inc.Inventors: Duen-Wh Hua, Fu-Chu Wen
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Patent number: 7285162Abstract: In various embodiments, methods and compositions are provided comprising titanium dioxide and silica spacers having improved light stability for use in paper, plastic and paints.Type: GrantFiled: November 30, 2004Date of Patent: October 23, 2007Assignee: Millennium Inorganic Chemicals, Inc.Inventors: Duen-Wh Hua, Fu-Chu Wen
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Publication number: 20050123761Abstract: In various embodiments, methods and compositions are provided comprising titanium dioxide and silica spacers having improved light stability for use in paper, plastic and paints.Type: ApplicationFiled: November 30, 2004Publication date: June 9, 2005Applicant: Millennium Inorganic Chemicals, Inc.Inventors: Duen-Wh Hua, Fu-Chu Wen
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Publication number: 20040202601Abstract: The present invention provides methods and compositions comprising inorganic solids for use as pigments in paints, papers and plastics.Type: ApplicationFiled: April 30, 2004Publication date: October 14, 2004Applicant: Millennium Inorganic Chemicals, Inc.Inventors: Fu-Chu Wen, Duen-Wu Hua, Deborah E. Busch
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Patent number: 6743286Abstract: The present invention provides methods and compositions comprising inorganic solids for use as pigments in paints, papers and plastics.Type: GrantFiled: August 1, 2001Date of Patent: June 1, 2004Assignee: Millennium Inorganic Chemicals, Inc.Inventors: Fu-Chu Wen, Duen-Wu Hua, Deborah E. Busch
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Patent number: 6713038Abstract: A titanium dioxide compound was isolated from a rare type of naturally occurring ore. Processes for efficiently isolating and obtaining these TiO2 compounds, as well as methods for using them have been developed. These TiO2 compounds may be used directly in applications such as paper, plastics and paints without being subjected to the chloride or sulfate processes. Also they made be used as a feedstock for the chloride or sulfate processes. In order to obtain these TiO2 compounds, one may grind or pulverize the naturally occurring ore, disperse it in a solution or suspension, and process it by selective flocculation or aqueous biphasic extraction.Type: GrantFiled: April 10, 2001Date of Patent: March 30, 2004Assignee: Millenium Inorganic Chemicals, Inc.Inventors: Ling Zhou, Thomas Messer, Fu-Chu Wen, Mark Banash
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Patent number: 6569920Abstract: The present invention provides slurries and methods of making slurries having improved stability comprising below about 78 weight-percent rutile titanium dioxide based on the total weight of the slurry, an amorphous alumina compound surface treated titanium dioxide, a polyacrylic acid dispersing agent having a molecular weight in the range of from about 2,000 to about 5,000 that is neutralized with a neutralizing agent having a monovalent group, and water; wherein the slurry has a pH of from about 6 to about 8. The slurries of the present invention resist gel formation.Type: GrantFiled: August 16, 2000Date of Patent: May 27, 2003Assignee: Millennium Inorganic Chemicals, Inc.Inventors: Fu-Chu Wen, Duen-Wu Hua
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Patent number: 6558464Abstract: The present invention discloses high solids slurries of anatase titanium dioxide pigment comprising greater than about 75% by weight of anatase TiO2 pigment dispersed in water. A process for producing the slurries of the present invention is disclosed which comprises the steps of a) dry milling the anatase titanium dioxide pigment, preferably by pressure rolling, and b) mixing the dry milled pigment with water in the presence of an acrylic acid dispersant.Type: GrantFiled: February 7, 2001Date of Patent: May 6, 2003Assignee: Millennium Inorganic Chemicals, Inc.Inventors: Robert J. Kostelnik, Fu-chu Wen
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Publication number: 20030024437Abstract: The present invention provides methods and compositions comprising inorganic solids for use as pigments in paints, papers and plastics.Type: ApplicationFiled: August 1, 2001Publication date: February 6, 2003Inventors: Fu-Chu Wen, Duen-Wu Hua, Deborah E. Busch
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Publication number: 20020000138Abstract: A titanium dioxide compound was isolated from a rare type of naturally occurring ore. Processes for efficiently isolating and obtaining these TiO2 compounds, as well as methods for using them have been developed. These TiO2 compounds may be used directly in applications such as paper, plastics and paints without being subjected to the chloride or sulfate processes. Also they made be used as a feedstock for the chloride or sulfate processes. In order to obtain these TiO2 compounds, one may grind or pulverize the naturally occurring ore, disperse it in a solution or suspension, and process it by selective flocculation or aqueous biphasic extraction.Type: ApplicationFiled: April 10, 2001Publication date: January 3, 2002Inventors: Ling Zhou, Thomas Messer, Fu-Chu Wen, Mark Banash
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Publication number: 20010007231Abstract: The present invention discloses high solids slurries of anatase titanium dioxide pigment comprising greater than about 75% by weight of anatase TiO2 pigment dispersed in water. A process for producing the slurries of the present invention is disclosed which comprises the steps of a) dry milling the anatase titanium dioxide pigment, preferably by pressure rolling, and b) mixing the dry milled pigment with water in the presence of an acrylic acid dispersant.Type: ApplicationFiled: February 7, 2001Publication date: July 12, 2001Inventors: Robert J. Kostelnik, Fu-chu Wen
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Patent number: 6197104Abstract: The present invention discloses high solids slurries of anatase titanium dioxide pigment comprising greater than about 75% by weight of anatase TiO2 pigment dispersed in water. A process for producing the slurries of the present invention is disclosed which comprises the steps of a) dry milling the anatase titanium dioxide pigment, preferably by pressure rolling, and b) mixing the dry milled pigment with water in the presence of an acrylic acid dispersant.Type: GrantFiled: May 4, 1998Date of Patent: March 6, 2001Assignee: Millennium Inorganic Chemicals, Inc.Inventors: Robert J. Kostelnik, Fu-chu Wen
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Patent number: 5746819Abstract: The present invention discloses high solids slurries of sulfate process, anatase titanium dioxide pigment. The improvements of these slurries over those of the prior art are improved slurry stability, tolerance to calcium and magnesium ions, foaming tendencies and reduced tendency to flocculate. The slurries of the present invention are comprised of at least 65% by weight of anatase TiO.sub.Type: GrantFiled: November 14, 1995Date of Patent: May 5, 1998Assignee: SCM Chemicals, Inc.Inventors: Robert J. Kostelnik, Fu-Chu Wen