Patents by Inventor Benjamin R. Lund
Benjamin R. Lund 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: 11739177Abstract: The present disclosure relates to sealed isocyanate resin compositions. The resin compositions may be used for additive manufacturing. One embodiment of the invention includes a photopolymerizable resin for additive manufacturing, the resin comprising: a blocked isocyanate; at least one monomer or oligomer; and a multifunctional nucleophile.Type: GrantFiled: November 25, 2020Date of Patent: August 29, 2023Assignees: Adaptive 3D Technologies, Board of Regents, The University of Texas SystemInventors: Benjamin R. Lund, Walter Voit
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Patent number: 11697706Abstract: The present disclosure relates to sealed isocyanate resin compositions. The resin compositions may be used for additive manufacturing. One embodiment of the invention includes a photopolymerizable resin for additive manufacturing, the resin comprising: a blocked isocyanate; at least one monomer or oligomer; and a multifunctional nucleophile.Type: GrantFiled: April 19, 2019Date of Patent: July 11, 2023Assignees: Adaptive 3D Technologies, Board of Regents, The University of Texas SystemInventors: Benjamin R. Lund, Walter Voit
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Patent number: 11655332Abstract: The present disclosure relates to sealed isocyanate resin compositions. The resin compositions may be used for additive manufacturing. One embodiment of the invention includes a photopolymerizable resin for additive manufacturing, the resin comprising: a blocked isocyanate; at least one monomer or oligomer; and a multifunctional nucleophile.Type: GrantFiled: November 25, 2020Date of Patent: May 23, 2023Assignees: Adaptive 3D Technologies, Board of Regents, The University of Texas SystemInventors: Benjamin R. Lund, Walter Voit
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Patent number: 11591485Abstract: A method of three-dimensional stereolithography printing a thiourethane polymer part using the vat resin. Adding a resin to a vat of a three-dimensional stereolithography printer, the resin a liquid mixture including: a first type of monomer including two or more thiol functional groups, a second type of monomer including two or more isocyanate functional groups, a photolatent base, an anionic step-growth polymerization reaction inhibitor and a light absorber. The photolatent base is decomposable upon exposure to a light to form a non-nucleophillic base catalyst having a pKa greater than 7. The anionic step-growth polymerization reaction inhibitor has an acidic group configured to form an acid-base pair with the non-nucleophillic base. The light absorber has an absorbance in the liquid mixture that is greater than an absorbance of the photolatent base at a wavelength of the light used for the exposure.Type: GrantFiled: April 19, 2022Date of Patent: February 28, 2023Assignees: Board of Regents, The University of Texas System, Adaptive 3D TechnologiesInventors: Gregory T. Ellson, Benjamin R. Lund, Walter Voit
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Publication number: 20220356363Abstract: The present disclosure relates to thiol-acrylate photopolymerizable resin compositions. The resin compositions may be used for additive manufacturing. One embodiment of the invention includes a photopolymerizable resin for additive manufacturing, the resin comprising: an acrylate oligomer; a methacrylate monomer; and a thiol wherein the resin may be configured to react by exposure to light to form a cured material. The resin may further comprise one or more oligomeric additives. For example, polyether oligomeric additives such as polytetrahydrofuran.Type: ApplicationFiled: July 23, 2020Publication date: November 10, 2022Applicant: Adaptive 3D Technologies, LLCInventors: Benjamin R. Lund, Jesse HUFFSTETLER
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Patent number: 11427718Abstract: A vat resin for three-dimensional stereolithography printing of a thiourethane polymer part comprising a liquid mixture including a first type of monomer, a second type of monomer, a photolatent base decomposable upon exposure to a light to form a non-nucleophillic base catalyst having a pKa greater than 7, an anionic step-growth polymerization reaction inhibitor having an acidic group configured to form an acid-base pair with the non-nucleophillic base and a light absorber having an absorbance in the liquid mixture that is greater than an absorbance of the photolatent base at a wavelength of the light used for the exposure. Methods of preparing the vat resin and three-dimensional stereolithography printing a thiourethane polymer part using the vat resin are also disclosed.Type: GrantFiled: October 25, 2018Date of Patent: August 30, 2022Assignees: Board of Regents, The University of Texas System, Adaptive 3D TechnologiesInventors: Gregory T. Ellson, Benjamin R. Lund, Walter Voit
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Publication number: 20220243078Abstract: A method of three-dimensional stereolithography printing a thiourethane polymer part using the vat resin. Adding a resin to a vat of a three-dimensional stereolithography printer, the resin a liquid mixture including: a first type of monomer including two or more thiol functional groups, a second type of monomer including two or more isocyanate functional groups, a photolatent base, an anionic step-growth polymerization reaction inhibitor and a light absorber. The photolatent base is decomposable upon exposure to a light to form a non-nucleophillic base catalyst having a pKa greater than 7. The anionic step-growth polymerization reaction inhibitor has an acidic group configured to form an acid-base pair with the non-nucleophillic base. The light absorber has an absorbance in the liquid mixture that is greater than an absorbance of the photolatent base at a wavelength of the light used for the exposure.Type: ApplicationFiled: April 19, 2022Publication date: August 4, 2022Inventors: Gregory T. Ellson, Benjamin R. Lund, Walter Voit
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Publication number: 20210189033Abstract: The present disclosure relates to sealed isocyanate resin compositions. The resin compositions may be used for additive manufacturing. One embodiment of the invention includes a photopolymerizable resin for additive manufacturing, the resin comprising: a blocked isocyanate; at least one monomer or oligomer; and a multifunctional nucleophile.Type: ApplicationFiled: April 19, 2019Publication date: June 24, 2021Inventors: Benjamin R. LUND, Walter VOIT
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Publication number: 20210170674Abstract: A semi-crystalline thiourethane polymer. The semi-crystalline thiourethane polymer comprises a sequential chain of a first type of monomer covalently bonded to a second type of monomer via thiourethane linkages. Each of the first type of monomer includes two or more thiol functional groups and each of the second type of monomer includes two or more isocyanate functional groups. The first and second types of monomers are polymerized together in an anionic step-growth polymerization reaction that is catalyzed by a non-nucleophillic base having a pKa greater than 7, produced by photo-initiated decomposition of a photolatent base. A method of synthesizing, and polymer jetting and stereolithography methods of manufacturing a polymer part, are also disclosed.Type: ApplicationFiled: December 17, 2020Publication date: June 10, 2021Inventors: Gregory T. ELLSON, Benjamin R. LUND, Walter VOIT
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Publication number: 20210087328Abstract: The present disclosure relates to sealed isocyanate resin compositions. The resin compositions may be used for additive manufacturing. One embodiment of the invention includes a photopolymerizable resin for additive manufacturing, the resin comprising: a blocked isocyanate; at least one monomer or oligomer; and a multifunctional nucleophile.Type: ApplicationFiled: November 25, 2020Publication date: March 25, 2021Inventors: Benjamin R. LUND, Walter VOIT
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Publication number: 20210079155Abstract: The present disclosure relates to sealed isocyanate resin compositions. The resin compositions may be used for additive manufacturing. One embodiment of the invention includes a photopolymerizable resin for additive manufacturing, the resin comprising: a blocked isocyanate; at least one monomer or oligomer; and a multifunctional nucleophile.Type: ApplicationFiled: November 25, 2020Publication date: March 18, 2021Inventors: Benjamin R. LUND, Walter VOIT
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Patent number: 10899072Abstract: A semi-crystalline thiourethane polymer. The semi-crystalline thiourethane polymer comprises a sequential chain of a first type of monomer covalently bonded to a second type of monomer via thiourethane linkages. Each of the first type of monomer includes two or more thiol functional groups and each of the second type of monomer includes two or more isocyanate functional groups. The first and second types of monomers are polymerized together in an anionic step-growth polymerization reaction that is catalyzed by a non-nucleophillic base having a pKa greater than 7, produced by photo-initiated decomposition of a photolatent base. A method of synthesizing, and polymer jetting and stereolithography methods of manufacturing a polymer part, are also disclosed.Type: GrantFiled: March 14, 2017Date of Patent: January 26, 2021Assignees: Adaptive 3D Technologies, Board of Resents, The University of Texas SystemInventors: Gregory T. Ellson, Benjamin R. Lund, Walter Voit
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Publication number: 20190211134Abstract: A thermoplastic thiourethane polymer comprising a sequential chain of a first type of monomer covalently bonded to a second type of monomer via thiourethane linkages. The first type of monomer includes two or more thiol functional groups and the type of monomer includes two or more isocyanate functional groups. The first and second types of monomers are polymerized together in an anhydrous aprotic solvent-dissolved anionic step-growth polymerization reaction that is catalyzed by a non-nucleophillic base having a pKa greater than 7.Type: ApplicationFiled: August 15, 2017Publication date: July 11, 2019Inventors: Gregory T. Ellson, Benjamin R. Lund, Walter Voit
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Publication number: 20190127596Abstract: A vat resin for three-dimensional stereolithography printing of a thiourethane polymer part comprising a liquid mixture including a first type of monomer, a second type of monomer, a photolatent base decomposable upon exposure to a light to form a non-nucleophillic base catalyst having a pKa greater than 7, an anionic step-growth polymerization reaction inhibitor having an acidic group configured to form an acid-base pair with the non-nucleophillic base and a light absorber having an absorbance in the liquid mixture that is greater than an absorbance of the photolatent base at a wavelength of the light used for the exposure. Methods of preparing the vat resin and three-dimensional stereolithography printing a thiourethane polymer part using the vat resin are also disclosed.Type: ApplicationFiled: October 25, 2018Publication date: May 2, 2019Inventors: Gregory T. Ellson, Benjamin R. Lund, Walter Voit
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Publication number: 20180051113Abstract: A melt-processable thermoset polymer comprising monomers cross-linked together by furan-maleimide Diels Alder adduct covalent bonds. At least about 1 percent of the furan-maleimide Diels Alder adduct covalent bonds of the polymer are de-cross-linked by a retro Diels Alder reaction at a temperature in a range from about 90° C. and less than about 300° C. A method of synthesizing, a filament fabrication printer for printing, and a method of printing, the melt-processable thermoset polymer are also disclosed.Type: ApplicationFiled: March 13, 2017Publication date: February 22, 2018Inventors: Kejia Yang, Benjamin R. Lund, Ronald Smaldone, Walter Voit
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Publication number: 20170267804Abstract: A semi-crystalline thiourethane polymer. The semi-crystalline thiourethane polymer comprises a sequential chain of a first type of monomer covalently bonded to a second type of monomer via thiourethane linkages. Each of the first type of monomer includes two or more thiol functional groups and each of the second type of monomer includes two or more isocyanate functional groups. The first and second types of monomers are polymerized together in an anionic step-growth polymerization reaction that is catalyzed by a non-nucleophillic base having a pKa greater than 7, produced by photo-initiated decomposition of a photolatent base. A method of synthesizing, and polymer jetting and stereolithography methods of manufacturing a polymer part, are also disclosed.Type: ApplicationFiled: March 14, 2017Publication date: September 21, 2017Inventors: Gregory T. Ellson, Benjamin R. Lund, Walter Voit
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Patent number: 9740082Abstract: A method of poling an organic polymeric electro-optic material. The method includes doping the organic polymeric electro-optic material with nanoparticles. The method also includes heating the organic polymeric electro-optic material to a poling temperature. The method also includes poling the organic polymeric electro-optic material by applying an electric field across the organic polymeric electro-optic material.Type: GrantFiled: February 16, 2016Date of Patent: August 22, 2017Assignee: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEMInventors: Benjamin R. Lund, Samsuddin Faisal Mahmood, Naixin Yang
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Publication number: 20170235208Abstract: A method of poling an organic polymeric electro-optic material. The method includes doping the organic polymeric electro-optic material with nanoparticles. The method also includes heating the organic polymeric electro-optic material to a poling temperature. The method also includes poling the organic polymeric electro-optic material by applying an electric field across the organic polymeric electro-optic material.Type: ApplicationFiled: February 16, 2016Publication date: August 17, 2017Inventors: Benjamin R. Lund, Samsuddin Faisal Mahmood, Naixin Yang
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Publication number: 20140319734Abstract: Embodiments of the invention is directed to a manufacturing process to mold and cast custom softening polymers into complex shaped devices, said process comprising the steps of: creating a 3D mold or shell; injecting the shell with a polymer or pre-polymer; cooling or curing the polymer in a short period of time; and forming a device.Type: ApplicationFiled: April 24, 2014Publication date: October 30, 2014Applicants: The Board of Regents of the University of Texas System, Syzygy Memory Plastics CorporationInventors: Walter Voit, Taylor Ware, James Amato, Michael Moussa, Phillip Brent Duncan, Bryan Bell, Cary Baur, Benjamin R. Lund, Duck J. Yang