Patents by Inventor Cesar Chan
Cesar Chan 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).
-
Patent number: 11168030Abstract: Disclosed are product (e.g., panels), slurry, and methods relating to a pregelatinized starch having a mid-range viscosity (i.e., from about 20 centipoise to about 700 centipoise), and an extruded pregelatinized starch.Type: GrantFiled: August 2, 2018Date of Patent: November 9, 2021Assignee: UNITED STATES GYPSUM COMPANYInventors: Yijun Sang, Chris C. Lee, Cesar Chan, Weixin David Song
-
Patent number: 10875935Abstract: Disclosed are methods relating to an extruded pregelatinized, partially hydrolyzed starch prepared by mixing at least water, non-pregelatinized starch, and acid to form a starch precursor. The acid can be a weak acid that substantially avoids chelating calcium ions or a strong acid in a small amount. In the method, pregelatinization and acid-modification of the starch precursor occurs in one step in an extruder. Also disclosed are methods of preparing board using the starch prepared according to the methods, as well as starches and boards prepared by various methods of the invention.Type: GrantFiled: October 18, 2017Date of Patent: December 29, 2020Assignee: UNITED STATES GYPSUM COMPANYInventors: Yijun Sang, Weixin D. Song, Cesar Chan, Chris C. Lee
-
Patent number: 10464847Abstract: Disclosed are product (e.g., panels), slurry, and methods relating to a pregelatinized starch having a mid-range viscosity (i.e., from about 20 centipoise to about 700 centipoise), and an extruded pregelatinized starch.Type: GrantFiled: November 22, 2016Date of Patent: November 5, 2019Assignee: UNITED STATES GYPSUM COMPANYInventors: Yijun Sang, Chris C. Lee, Cesar Chan, Weixin David Song
-
Patent number: 10377108Abstract: Disclosed herein are gypsum products with at least one high efficiency heat sink additive. The gypsum products, e.g., gypsum panels, are less susceptible to the damaging effects of extreme heat as the temperature rises due to the presence of the at least one additive.Type: GrantFiled: February 13, 2013Date of Patent: August 13, 2019Inventors: Cesar Chan, Weixin D. Song, Bangji Cao, Guy Rosenthal, Qiang Yu, Srinivas Veeramasuneni
-
Patent number: 10293522Abstract: A multi-piece mold for use in a method for making a slurry distributor includes a plurality of mold segments adapted to be removably secured together. The mold segments are configured such that, when the mold segments are assembled together, the assembled mold segments define a substantially continuous exterior surface adapted to be a negative image of an interior flow region of a slurry distributor molded thereupon. Each mold segment has a maximum cross-sectional area in a plane substantially transverse to a direction of movement of the mold segment along a removal path out of a respective opening of the molded slurry distributor. The maximum cross-sectional area of each mold segment is up to about 150% of the smallest area of the interior flow region of the molded slurry distributor through which the mold segment traverses when moving along the respective removal path.Type: GrantFiled: October 24, 2012Date of Patent: May 21, 2019Assignee: United States Gypsum CompanyInventors: Alfred Li, Chris C. Lee, Cesar Chan, Ronald E. Schenck, Weixin D. Song, Curt Loring, James Wittbold, William Rago
-
Patent number: 10286572Abstract: A flow splitter can include an inlet conduit and first and second outlet conduits separated by a junction portion. The inlet conduit can include an inlet end and a junction end. The inlet conduit is disposed along a main flow axis extending between the inlet end and the junction end. The inlet end defines an inlet opening. The junction end defines first and second junction openings. The first junction opening is disposed in spaced relationship to the second junction opening. The junction portion is disposed at the junction end of the inlet conduit between the first and second junction openings. The junction portion includes a substantially planar wall region that is substantially perpendicular to the main flow axis. The flow splitter can be placed in fluid communication with a cementitious slurry mixer and a slurry distributor with the flow splitter disposed therebetween.Type: GrantFiled: October 24, 2012Date of Patent: May 14, 2019Assignee: United States Gypsum CompanyInventors: Alfred Li, Chris C. Lee, Cesar Chan, Ronald E. Schenck, Weixin D. Song, Curt Loring, James Wittbold, William Rago
-
Patent number: 10245611Abstract: A slurry distributor for use in a continuous manufacturing process includes an inlet opening and a shaped duct adapted to receive a flow of slurry provided at the inlet opening. The shaped duct has a parabolic guide surface adapted to redirect the flow of slurry. An outlet opening in fluid communication with the shaped duct is adapted to discharge the flow of slurry from the slurry distributor.Type: GrantFiled: February 28, 2017Date of Patent: April 2, 2019Assignee: United States Gypsum CompanyInventors: Alfred C. Li, Christopher C. Lee, Christopher Nelson, Cesar Chan, James Wittbold, Weixin D. Song
-
Patent number: 10239230Abstract: A slurry distribution system can include a feed conduit and a distribution conduit in fluid communication therewith. The feed conduit can include a first feed inlet and a second feed inlet disposed in spaced relationship thereto. The distribution conduit can extend generally along a longitudinal axis and include an entry portion and a distribution outlet in fluid communication therewith. The entry portion is in fluid communication with the first and second feed inlets of the feed conduit. The distribution outlet extends a predetermined distance along a transverse axis, which is substantially perpendicular to the longitudinal axis. The slurry distribution system can be placed in fluid communication with a gypsum slurry mixer adapted to agitate water and calcined gypsum to form an aqueous calcined gypsum slurry.Type: GrantFiled: April 10, 2017Date of Patent: March 26, 2019Assignee: United States Gypsum CompanyInventors: Alfred Li, Chris C. Lee, Cesar Chan, Ronald E. Schenck, Weixin David Song, Curtis B. Loring, James R. Wittbold, William J. Rago, Christopher Robert Nelson
-
Publication number: 20180339944Abstract: Disclosed are product (e.g., panels), slurry, and methods relating to a pregelatinized starch having a mid-range viscosity (i.e., from about 20 centipoise to about 700 centipoise), and an extruded pregelatinized starch.Type: ApplicationFiled: August 2, 2018Publication date: November 29, 2018Applicant: United States Gypsum CompanyInventors: Yijun SANG, Chris C. LEE, Cesar CHAN, Weixin David SONG
-
Patent number: 10052793Abstract: A slurry distributor can include a feed conduit and a distribution conduit in fluid communication therewith. The feed conduit can include a first and second feed inlets disposed in spaced relationship to each other. The distribution conduit can extend generally along a longitudinal axis and include an entry portion and a distribution outlet in fluid communication therewith. The entry portion is in fluid communication with the first and second feed inlets of the feed conduit. The distribution outlet extends a predetermined distance along a transverse axis. The first and second feed inlets each has an opening with a cross-sectional area. The entry portion of the distribution conduit has an opening with a cross-sectional area which is greater than the sum of the cross-sectional areas of the openings of the first and second feed inlets. The slurry distributor can be placed in fluid communication with a gypsum slurry mixer.Type: GrantFiled: October 24, 2012Date of Patent: August 21, 2018Assignee: United States Gypsum CompanyInventors: Alfred Li, Chris C. Lee, Cesar Chan, Ronald E. Schenck, Weixin D. Song, Curt Loring, James Wittbold, William Rago
-
Patent number: 9909718Abstract: A multi-leg discharge boot can include an inlet conduit and first and second outlet conduits separated by a junction portion. The inlet conduit includes an entry segment, a transition segment and a heel portion disposed therebetween. The inlet conduit can include an inlet end and a junction end. A junction portion is disposed at the junction end of the inlet conduit between first and second junction openings. The junction portion includes a substantially planar wall region that is substantially perpendicular to a main flow discharge axis.Type: GrantFiled: October 24, 2012Date of Patent: March 6, 2018Assignee: United States Gypsum CompanyInventors: James Wittbold, Alfred C. Li, Chris C. Lee, Cesar Chan, William Rago, Weixin D. Song
-
Publication number: 20180037671Abstract: Disclosed are methods relating to an extruded pregelatinized, partially hydrolyzed starch prepared by mixing at least water, non-pregelatinized starch, and acid to form a starch precursor. The acid can be a weak acid that substantially avoids chelating calcium ions or a strong acid in a small amount. In the method, pregelatinization and acid-modification of the starch precursor occurs in one step in an extruder. Also disclosed are methods of preparing board using the starch prepared according to the methods, as well as starches and boards prepared by various methods of the invention.Type: ApplicationFiled: October 18, 2017Publication date: February 8, 2018Inventors: Yijun SANG, Weixin D. SONG, Cesar CHAN, Chris C. LEE
-
Patent number: 9828441Abstract: Disclosed are methods relating to an extruded pregelatinized, partially hydrolyzed starch prepared by mixing at least water, non-pregelatinized starch, and acid to form a starch precursor. The acid can be a weak acid that substantially avoids chelating calcium ions or a strong acid in a small amount. In the method, pregelatinization and acid-modification of the starch precursor occurs in one step in an extruder. Also disclosed are methods of preparing board using the starch prepared according to the methods, as well as starches and boards prepared by various methods of the invention.Type: GrantFiled: September 23, 2014Date of Patent: November 28, 2017Assignee: United States Gypsum CompanyInventors: Yijun Sang, Weixin D. Song, Cesar Chan, Chris C. Lee
-
Publication number: 20170210029Abstract: A slurry distribution system can include a feed conduit and a distribution conduit in fluid communication therewith. The feed conduit can include a first feed inlet and a second feed inlet disposed in spaced relationship thereto. The distribution conduit can extend generally along a longitudinal axis and include an entry portion and a distribution outlet in fluid communication therewith. The entry portion is in fluid communication with the first and second feed inlets of the feed conduit. The distribution outlet extends a predetermined distance along a transverse axis, which is substantially perpendicular to the longitudinal axis. The slurry distribution system can be placed in fluid communication with a gypsum slurry mixer adapted to agitate water and calcined gypsum to form an aqueous calcined gypsum slurry.Type: ApplicationFiled: April 10, 2017Publication date: July 27, 2017Inventors: Alfred LI, Chris C. LEE, Cesar CHAN, Ronald E. SCHENCK, Weixin David SONG, Curtis B. LORING, James R. WITTBOLD, William J. RAGO, Christopher Robert NELSON
-
Publication number: 20170165704Abstract: A slurry distributor for use in a continuous manufacturing process includes an inlet opening and a shaped duct adapted to receive a flow of slurry provided at the inlet opening. The shaped duct has a parabolic guide surface adapted to redirect the flow of slurry. An outlet opening in fluid communication with the shaped duct is adapted to discharge the flow of slurry from the slurry distributor.Type: ApplicationFiled: February 28, 2017Publication date: June 15, 2017Inventors: Alfred C. LI, Christopher C. LEE, Christopher NELSON, Cesar CHAN, James WITTBOLD, Weixin D. SONG
-
Patent number: 9616591Abstract: A slurry distribution system can include a feed conduit and a distribution conduit in fluid communication therewith. The feed conduit can include a first feed inlet and a second feed inlet disposed in spaced relationship thereto. The distribution conduit can extend generally along a longitudinal axis and include an entry portion and a distribution outlet in fluid communication therewith. The entry portion is in fluid communication with the first and second feed inlets of the feed conduit. The distribution outlet extends a predetermined distance along a transverse axis, which is substantially perpendicular to the longitudinal axis. The slurry distribution system can be placed in fluid communication with a gypsum slurry mixer adapted to agitate water and calcined gypsum to form an aqueous calcined gypsum slurry.Type: GrantFiled: December 30, 2011Date of Patent: April 11, 2017Assignee: United States Gypsum CompanyInventors: Alfred Li, Chris C. Lee, Cesar Chan, Ronald E. Schenck, Weixin David Song, Curtis B. Loring, James R. Wittbold, William J. Rago, Christopher Robert Nelson
-
Publication number: 20170073272Abstract: Disclosed are product (e.g., panels), slurry, and methods relating to a pregelatinized starch having a mid-range viscosity (i.e., from about 20 centipoise to about 700 centipoise), and an extruded pregelatinized starch.Type: ApplicationFiled: November 22, 2016Publication date: March 16, 2017Inventors: Yijun SANG, Chris C. LEE, Cesar CHAN, Weixin David SONG
-
Patent number: 9579822Abstract: A slurry distributor for use in a continuous manufacturing process includes an inlet opening and a shaped duct adapted to receive a flow of slurry provided at the inlet opening. The shaped duct has a parabolic guide surface adapted to redirect the flow of slurry. An outlet opening in fluid communication with the shaped duct is adapted to discharge the flow of slurry from the slurry distributor.Type: GrantFiled: December 30, 2011Date of Patent: February 28, 2017Assignee: United States Gypsum CompanyInventors: Alfred Li, Chris C. Lee, Chris Nelson, Cesar Chan, James Wittbold, Weixin D. Song
-
Patent number: 9540810Abstract: Disclosed are product (e.g., panels), slurry, and methods relating to a pregelatinized starch having a mid-range viscosity (i.e., from about 20 centipoise to about 700 centipoise), and an extruded pregelatinized starch.Type: GrantFiled: October 2, 2013Date of Patent: January 10, 2017Assignee: United States Gypsum CompanyInventors: Yijun Sang, Chris C. Lee, Cesar Chan, Weixin David Song
-
Publication number: 20150147546Abstract: Described herein is a composite board and a method of producing a composite board, the board having increased fire endurance. The board comprises a sheet having a thickness greater than about 0.014 inches, and a thermal conductivity of about 0.1 w/(m.k.) or less. The composite board can be part of a wall assembly comprising two boards defining an interior cavity, the sheet facing the interior cavity.Type: ApplicationFiled: January 30, 2015Publication date: May 28, 2015Inventors: Bangji CAO, Weixin SONG, Cesar CHAN, Scott LECKIE