Patents by Inventor Wei-Wen Tsai
Wei-Wen Tsai 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: 20200017715Abstract: A process for chemical mechanical polishing a substrate containing tungsten is disclosed to reduce static corrosion rate and inhibit dishing of the tungsten and erosion of underlying dielectrics. The process includes providing a substrate; providing a polishing composition, containing, as initial components: water; an oxidizing agent; guar gum; a dicarboxylic acid, a source of iron ions; a colloidal silica abrasive; and, optionally a pH adjusting agent; providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein some of the tungsten (W) is polished away from the substrate, static corrosion rate is reduced, dishing of the tungsten (W) is inhibited as well as erosion of dielectrics underlying the tungsten (W).Type: ApplicationFiled: September 29, 2016Publication date: January 16, 2020Inventors: Wei-Wen Tsai, Lin-Chen Ho, Cheng-Ping Lee
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Publication number: 20190345363Abstract: A process for chemical mechanical polishing a substrate containing tungsten to reduce static corrosion rate and inhibit dishing of the tungsten and erosion of underlying dielectrics is disclosed. The process includes providing a substrate; providing a polishing composition, containing, as initial components: water; an oxidizing agent; xanthan gum; a dicarboxylic acid, a source of iron ions; a colloidal silica abrasive; and, optionally a pH adjusting agent; optionally a surfactant; providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein some of the tungsten (W) is polished away from the substrate, static corrosion rate is reduced, dishing of the tungsten (W) is inhibited as well as erosion of dielectrics underlying the tungsten (W).Type: ApplicationFiled: September 29, 2016Publication date: November 14, 2019Inventors: Lin-Chen Ho, Wei-Wen Tsai, Cheng-Ping Lee
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Publication number: 20190345364Abstract: A process for chemical mechanical polishing a substrate containing tungsten is disclosed to reduce static corrosion rate and inhibit dishing of the tungsten and erosion of underlying dielectrics. The process includes providing a substrate; providing a polishing composition, containing, as initial components: water; an oxidizing agent; alginate; a dicarboxylic acid, a source of iron ions; a colloidal silica abrasive; and, optionally a pH adjusting agent; providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein some of the tungsten (W) is polished away from the substrate, static corrosion rate is reduced, dishing of the tungsten (W) is inhibited as well as erosion of dielectrics underlying the tungsten (W).Type: ApplicationFiled: September 29, 2016Publication date: November 14, 2019Inventors: Wei-Wen Tsai, Lin-Chen Ho, Cheng-Ping Lee
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Publication number: 20190338163Abstract: A process for chemical mechanical polishing a substrate containing tungsten is disclosed to reduce corrosion rate and inhibit dishing of the tungsten and erosion of underlying dielectrics. The process includes providing a substrate; providing a polishing composition, containing, as initial components: water; an oxidizing agent; nonionic polyacrylamide; a dicarboxylic acid, a source of iron ions; a colloidal silica abrasive having a negative zeta potential; and, optionally, a pH adjusting agent; providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein some of the tungsten is polished away from the substrate, corrosion rate is reduced, dishing of the tungsten is inhibited as well as erosion of dielectrics underlying the tungsten.Type: ApplicationFiled: March 3, 2019Publication date: November 7, 2019Inventors: Lin-Chen Ho, Wei-Wen Tsai
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Patent number: 10286518Abstract: A process for chemical mechanical polishing a substrate containing tungsten is disclosed to reduce corrosion rate and inhibit dishing of the tungsten and erosion of underlying dielectrics. The process includes providing a substrate; providing a polishing composition, containing, as initial components: water; an oxidizing agent; a thiolalkoxy compound; a dicarboxylic acid, a source of iron ions; a colloidal silica abrasive; and, optionally a pH adjusting agent; providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein some of the tungsten (W) is polished away from the substrate, corrosion rate is reduced, dishing of the tungsten (W) is inhibited as well as erosion of dielectrics underlying the tungsten (W).Type: GrantFiled: January 31, 2017Date of Patent: May 14, 2019Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: Lin-Chen Ho, Wei-Wen Tsai, Cheng-Ping Lee
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Publication number: 20190062596Abstract: A process for chemical mechanical polishing a substrate containing tungsten and titanium is provided comprising: providing the substrate; providing a polishing composition, containing, as initial components: water; an oxidizing agent; a chitosan; a dicarboxylic acid, wherein the dicarboxylic acid is selected from the group consisting of propanedioic acid and 2-hydroxypropanedioic acid; a source of iron ions; a colloidal silica abrasive with a positive surface charge; and, optionally pH adjusting agent; providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein some of the tungsten (W) and some of the titanium (Ti) is polished away from the substrate with a removal selectivity for the tungsten (W) relative to the titanium (Ti).Type: ApplicationFiled: March 1, 2016Publication date: February 28, 2019Inventors: Wei-Wen Tsai, Lin-Chen Ho, Cheng-Ping Lee, Jiun-Fang Wang
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Publication number: 20190057877Abstract: A process for chemical mechanical polishing a substrate containing titanium nitride and titanium is provided comprising: providing a polishing composition, containing, as initial components: water; an oxidizing agent; a linear polyalkylenimine polymer; a colloidal silica abrasive with a positive surface charge; a carboxylic acid; a source of ferric ions; and, optionally pH adjusting agent; wherein the polishing composition has a pH of 1 to 4; providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein at least some of the titanium nitride and at least some of the titanium is polished away with a selectivity between titanium nitride and titanium.Type: ApplicationFiled: March 4, 2016Publication date: February 21, 2019Inventors: Wei-Wen Tsai, Cheng-Ping Lee, Jiun-Fang Wang
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Publication number: 20190023944Abstract: A process for chemical mechanical polishing a substrate containing tungsten and titanium is provided comprising: providing the substrate; providing a polishing composition, containing, as initial components: water; an oxidizing agent; an allylamine additive; a carboxylic acid; a source of iron ions; a colloidal silica abrasive with a positive surface charge; and, optionally pH adjusting agent; providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein the tungsten (W) is selectively polished away from the substrate relative to the titanium (Ti).Type: ApplicationFiled: March 1, 2016Publication date: January 24, 2019Inventors: Lin-Chen Ho, Wei-Wen Tsai, Cheng-Ping Lee, Jiun-Fang Wang
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Patent number: 10181408Abstract: A process for chemical mechanical polishing a substrate containing tungsten is disclosed to reduce corrosion rate and inhibit dishing of the tungsten and erosion of underlying dielectrics. The process includes providing a substrate; providing a polishing composition, containing, as initial components: water; an oxidizing agent; a polyglycol or polyglycol derivative; a dicarboxylic acid, a source of iron ions; a colloidal silica abrasive; and, optionally a pH adjusting agent; providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein some of the tungsten (W) is polished away from the substrate, corrosion rate is reduced, dishing of the tungsten (W) is inhibited as well as erosion of dielectrics underlying the tungsten (W).Type: GrantFiled: November 16, 2017Date of Patent: January 15, 2019Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: Lin-Chen Ho, Wei-Wen Tsai, Cheng-Ping Lee
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Patent number: 10173925Abstract: The present invention provides substantially nonionic brush polymers having pendant polyether groups, preferably poly(alkylene glycol) groups, which polymers are useful as synthetic polymer substitutes for cellulose ethers in mortars and hydraulic binders. The brush polymers are preferably crosslinked, such as with ethylene glycol di(meth)acrylates.Type: GrantFiled: March 27, 2015Date of Patent: January 8, 2019Assignees: Dow Global Technologies LLC, Rohm and Haas CompanyInventors: Robert Baumann, Adam W. Freeman, Philip M. Imbesi, Marc Schmitz, Hongwei Shen, Wei-Wen Tsai, Sipei Zhang
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Publication number: 20180218918Abstract: A process for chemical mechanical polishing a substrate containing tungsten is disclosed to reduce corrosion rate and inhibit dishing of the tungsten and erosion of underlying dielectrics. The process includes providing a substrate; providing a polishing composition, containing, as initial components: water; an oxidizing agent; a polyglycol or polyglycol derivative; a dicarboxylic acid, a source of iron ions; a colloidal silica abrasive; and, optionally a pH adjusting agent; providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein some of the tungsten (W) is polished away from the substrate, corrosion rate is reduced, dishing of the tungsten (W) is inhibited as well as erosion of dielectrics underlying the tungsten (W).Type: ApplicationFiled: November 16, 2017Publication date: August 2, 2018Inventors: Lin-Chen Ho, Wei-Wen Tsai, Cheng-Ping Lee
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Publication number: 20180216240Abstract: A process for chemical mechanical polishing a substrate containing tungsten is disclosed to reduce corrosion rate and inhibit dishing of the tungsten and erosion of underlying dielectrics. The process includes providing a substrate; providing a polishing composition, containing, as initial components: water; an oxidizing agent; a thiolalkoxy compound; a dicarboxylic acid, a source of iron ions; a colloidal silica abrasive; and, optionally a pH adjusting agent; providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein some of the tungsten (W) is polished away from the substrate, corrosion rate is reduced, dishing of the tungsten (W) is inhibited as well as erosion of dielectrics underlying the tungsten (W).Type: ApplicationFiled: January 31, 2017Publication date: August 2, 2018Inventors: Lin-Chen Ho, Wei-Wen Tsai, Cheng-Ping Lee
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Patent number: 10005694Abstract: The present invention provides compositions useful as a replacement for cellulose ether in cement, plaster or mortar compositions comprising i) nonionic or substantially nonionic vinyl or acrylic brush polymers having pendant or side chain polyether groups, and having a relative weight average molecular weight of from 140,000 to 50,000,000 g/mole, and ii) aromatic cofactors containing one or more phenolic groups, such as catechol tannins, phenolic resins, polyphenolics, and napthhols or, in combination, one or more aromatic groups with at least one sulfur acid group, such as naphthalene sulfonate aldehyde condensate polymers, poly(styrene-co-styrene sulfonate) copolymers, and lignin sulfonates, preferably branched cofactors, including phenolic resins, aldehyde condensate polymers and lignin sulfonates. The compositions may comprise a dry powder blend of i) and ii), one dry powder of both i) and ii), or an aqueous mixture.Type: GrantFiled: October 16, 2015Date of Patent: June 26, 2018Assignees: Rohm and Haas Company, Dow Global Technologies LLCInventors: Alvin M. Maurice, Thomas Oswald, Michael J. Radler, Hongwei Shen, Wei-Wen Tsai
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Patent number: 9984895Abstract: A process for chemical mechanical polishing a substrate containing tungsten is disclosed to reduce corrosion rate and inhibit dishing of the tungsten and erosion of underlying dielectrics. The process includes providing a substrate; providing a polishing composition, containing, as initial components: water; an oxidizing agent; a dihydroxy bis-sulfide; a dicarboxylic acid, a source of iron ions; a colloidal silica abrasive; and, optionally a pH adjusting agent; providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein some of the tungsten (W) is polished away from the substrate, corrosion rate is reduced, dishing of the tungsten (W) is inhibited as well as erosion of dielectrics underlying the tungsten (W).Type: GrantFiled: November 16, 2017Date of Patent: May 29, 2018Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: Lin-Chen Ho, Wei-Wen Tsai, Cheng-Ping Lee
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Publication number: 20170247293Abstract: The present invention provides compositions useful as a replacement for cellulose ether in cement, plaster or mortar compositions comprising i) nonionic or substantially nonionic vinyl or acrylic brush polymers having pendant or side chain polyether groups, and having a relative weight average molecular weight of from 140,000 to 50,000,000 g/mole, and ii) aromatic cofactors containing one or more phenolic groups, such as catechol tannins, phenolic resins, polyphenolics, and napthhols or, in combination, one or more aromatic groups with at least one sulfur acid group, such as naphthalene sulfonate aldehyde condensate polymers, poly(styrene-co-styrene sulfonate) copolymers, and lignin sulfonates, preferably branched cofactors, including phenolic resins, aldehyde condensate polymers and lignin sulfonates. The compositions may comprise a dry powder blend of i) and ii), one dry powder of both i) and ii), or an aqueous mixture.Type: ApplicationFiled: October 16, 2015Publication date: August 31, 2017Inventors: Alvin M. MAURICE, Thomas OSWALD, Michael J. RADLER, Hongwei SHEN, Wei-Wen TSAI
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Publication number: 20170174567Abstract: The present invention provides substantially nonionic brush polymers having pendant polyether groups, preferably poly(alkylene glycol) groups, which polymers are useful as synthetic polymer substitutes for cellulose ethers in mortars and hydraulic binders. The brush polymers are preferably crosslinked, such as with ethylene glycol di(meth)acrylates.Type: ApplicationFiled: March 27, 2015Publication date: June 22, 2017Applicants: Dow Europe GmbH, Dow Wolff Cellulosics GmbH & Co. OHG, The Dow Chemical CompanyInventors: Robert Baumann, Adam W. Freeman, Philip M. Imbesi, Marc Schmitz, Hongwei Shen, Wei-Wen Tsai, Sipei Zhang
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Patent number: 8841360Abstract: The present invention relates to a coatings composition comprising an alkyd, a pigment, a rheology modifier, a radical producing oxidoreductase, and one or more additives, wherein the alkyd contains at least one C6-30—C(O)O— group having at least one diallylic group. The coatings composition of the present invention cures relatively rapidly without ancillary crosslinking agents and with minimal, if any, VOCs from solvents or coalescents.Type: GrantFiled: October 2, 2012Date of Patent: September 23, 2014Assignee: Rohm and Haas CompanyInventors: Selvanathan Arumugam, Ralph Even, David L. Fratarelli, Kathleen Manna, Wei-Wen Tsai
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Publication number: 20140094552Abstract: The present invention relates to a coatings composition comprising an alkyd, a pigment, a rheology modifier, a radical producing oxidoreductase, and one or more additives, wherein the alkyd contains at least one C6-30—C(O)O— group having at least one diallylic group. The coatings composition of the present invention cures relatively rapidly without ancillary crosslinking agents and with minimal, if any, VOCs from solvents or coalescents.Type: ApplicationFiled: October 2, 2012Publication date: April 3, 2014Applicant: Rohm and Haas CompanyInventors: Selvanathan Arumugam, Ralph Even, David L. Fratarelli, Kathleen Manna, Wei-Wen Tsai