Patents by Inventor Paul OLUBUMMO
Paul OLUBUMMO 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: 20240042680Abstract: In an example, a three-dimensional (3D) printed part comprises a plurality of fused build material layers including exterior layers and interior layers. At least some of the interior layers include a composite portion having a miscible solid physically bonded to an amide functionality or an amine functionality of the build material. The miscible solid is a solid at a room temperature ranging from about 18° C. to about 25° C.Type: ApplicationFiled: October 11, 2023Publication date: February 8, 2024Inventors: Paul Olubummo, Kristopher J. Erickson, Aja Hartman, Lihua Zhao
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Patent number: 11801631Abstract: In an example, a three-dimensional (3D) printed part comprises a plurality of fused build material layers including exterior layers and interior layers. At least some of the interior layers include a composite portion having a miscible solid physically bonded to an amide functionality or an amine functionality of the build material. The miscible solid is a solid at a room temperature ranging from about 18° C. to about 25° C.Type: GrantFiled: June 28, 2017Date of Patent: October 31, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Paul Olubummo, Kristopher J. Erickson, Aja Hartman, Lihua Zhao
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Patent number: 11772163Abstract: The present disclosure is drawn to a three-dimensional printing system can include a powder bed material, including from 80 wt % to 100 wt % metal particles having a D50 particle size distribution value ranging from 5 ?m to 75 ?m and a powder bed support substrate for receiving the powder bed material. The system can also include a fluid ejector operable to digitally deposit a thermally sensitive binder fluid onto a selected portion of the powder bed material on the powder bed support substrate. The thermally sensitive binder fluid can include water, a reducible metal compound, and a thermally activated reducing agent. A light source can also be present to generate a pulse energy sufficient to cause the thermally activated reducing agent to reduce the reducible metal compound and bind metal particles together to form a green three-dimensional part.Type: GrantFiled: February 9, 2018Date of Patent: October 3, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Krzysztof Nauka, Paul Olubummo
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Patent number: 11760894Abstract: An example of a fusing agent includes a metal bis(dithiolene) salt, a polar aprotic solvent, and a balance of water. An example of a method for making an example of the fusing agent includes adding a metal bis(dithiolene) salt into a liquid vehicle including at least a polar aprotic solvent and water.Type: GrantFiled: July 7, 2022Date of Patent: September 19, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Paul Olubummo, Lihua Zhao, Aja Hartman, Howard S. Tom
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Patent number: 11577454Abstract: A three-dimensional printing system can include polymeric build material and jettable fluid(s). The polymeric build material can have an average particle size from 20 ?m to 150 ?m, a first melt viscosity, and a melting temperature from 75° C. to 350° C. In one example, the jettable fluid can include water, from 0.1 wt % to 10 wt % of electromagnetic radiation absorber, and from 10 wt % to 35 wt % of an organic solvent plasticizer. Contacting a first portion of a layer of the polymeric build material with the jettable fluid can provide an organic solvent plasticizer loading from 2 wt % to 10 wt % based on the polymeric build material content. The first melt viscosity of the polymeric build material at the first portion can be reduced and the melting temperature of the polymeric build material at the first portion can be decreased by 3° C. to 15° C.Type: GrantFiled: March 15, 2018Date of Patent: February 14, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Kristopher J. Erickson, Paul Olubummo, Aja Hartman, Lihua Zhao
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Publication number: 20220372316Abstract: An example of a fusing agent includes a metal bis(dithiolene) salt, a polar aprotic solvent, and a balance of water. An example of a method for making an example of the fusing agent includes adding a metal bis(dithiolene) salt into a liquid vehicle including at least a polar aprotic solvent and water.Type: ApplicationFiled: July 7, 2022Publication date: November 24, 2022Inventors: Paul Olubummo, Lihua Zhao, Aja Hartman, Howard S. Tom
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Patent number: 11414561Abstract: An example of a fusing agent includes a metal bis(dithiolene) salt, a polar aprotic solvent, and a balance of water. An example of a method for making an example of the fusing agent includes adding a metal bis(dithiolene) salt into a liquid vehicle including at least a polar aprotic solvent and water.Type: GrantFiled: October 24, 2017Date of Patent: August 16, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Paul Olubummo, Lihua Zhao, Aja Hartman, Howard S. Tom
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Publication number: 20210323066Abstract: A material set can include a binder fluid and a powder bed material. The binder fluid can include an iron oxide nanoparticle, a dispersing ligand, a reducing agent, and an aqueous liquid vehicle. The powder bed material can include from 80 wt % to 100 wt % metal particles that can have a D50 particle size distribution value ranging from 5 ?m to 75 ?m.Type: ApplicationFiled: June 5, 2018Publication date: October 21, 2021Inventor: Paul Olubummo
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Publication number: 20210283686Abstract: A material set can include a powder bed material including from 80 wt % to 100 wt % metal particles and a thermally sensitive binder fluid. The metal particles can have a D50 particle size distribution value ranging from 5 ?m to 75 ?m. The thermally sensitive binder fluid can include an aqueous liquid vehicle, a reducible metal compound, and a thermally activated reducing agent.Type: ApplicationFiled: February 9, 2018Publication date: September 16, 2021Inventors: Paul Olubummo, Krzysztof Nauka
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Publication number: 20210284858Abstract: An example of a fusing agent includes a metal bis(dithiolene) salt, a polar aprotic solvent, and a balance of water. An example of a method for making an example of the fusing agent includes adding a metal bis(dithiolene) salt into a liquid vehicle including at least a polar aprotic solvent and water.Type: ApplicationFiled: October 24, 2017Publication date: September 16, 2021Inventors: Paul Olubummo, Lihua Zhao, Aja Hartman, Howard S. Tom
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Publication number: 20210283687Abstract: The present disclosure is drawn to a three-dimensional printing system can include a powder bed material, including from 80 wt % to 100 wt % metal particles having a D50 particle size distribution value ranging from 5 ?m to 75 ?m and a powder bed support substrate for receiving the powder bed material. The system can also include a fluid ejector operable to digitally deposit a thermally sensitive binder fluid onto a selected portion of the powder bed material on the powder bed support substrate. The thermally sensitive binder fluid can include water, a reducible metal compound, and a thermally activated reducing agent. A light source can also be present to generate a pulse energy sufficient to cause the thermally activated reducing agent to reduce the reducible metal compound and bind metal particles together to form a green three-dimensional part.Type: ApplicationFiled: February 9, 2018Publication date: September 16, 2021Inventors: Krzysztof Nauka, Paul Olubummo
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Publication number: 20210197445Abstract: In an example, a three-dimensional (3D) printed part comprises a plurality of fused build material layers including exterior layers and interior layers. At least some of the interior layers include a composite portion having a miscible solid physically bonded to an amide functionality or an amine functionality of the build material. The miscible solid is a solid at a room temperature ranging from about 18° C. to about 25° C.Type: ApplicationFiled: June 28, 2017Publication date: July 1, 2021Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Paul OLUBUMMO, Kristopher J. ERICKSON, Aja HARTMAN, Lihua ZHAO
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Patent number: 11008479Abstract: An example of a fusing agent includes a tetraphenyldiamine-based dye, alkyldiphenyloxide disulfonate, 1-methyl-2-pyrrolidone, and a balance of water. The fusing agent excludes a strong reducing species. The fusing agent may be incorporated into a three-dimensional printing method or a three-dimensional printing system. In an example of the three-dimensional printing method, a polymeric or polymeric composite build material is applied. The fusing agent is selectively applied on at least a portion of the polymeric or polymeric composite build material. The polymeric or polymeric composite build material is exposed to electromagnetic radiation to fuse the portion of the polymeric or polymeric composite build material in contact with the fusing agent to form a layer.Type: GrantFiled: February 6, 2017Date of Patent: May 18, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Paul Olubummo, Lihua Zhao, Kristopher J. Erickson, Howard S. Tom, Aja Hartman
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Publication number: 20210138725Abstract: A three-dimensional printing system can include polymeric build material and jettable fluid(s). The polymeric build material can have an average particle size from 20 ?m to 150 ?m, a first melt viscosity, and a melting temperature from 75° C. to 350° C. In one example, the jettable fluid can include water, from 0.1 wt % to 10 wt % of electromagnetic radiation absorber, and from 10 wt % to 35 wt % of an organic solvent plasticizer. Contacting a first portion of a layer of the polymeric build material with the jettable fluid can provide an organic solvent plasticizer loading from 2 wt % to 10 wt % based on the polymeric build material content. The first melt viscosity of the polymeric build material at the first portion can be reduced and the melting temperature of the polymeric build material at the first portion can be decreased by 3° C. to 15° C.Type: ApplicationFiled: March 15, 2018Publication date: May 13, 2021Inventors: Kristopher J Erickson, Paul Olubummo, Aja Hartman, Lihua Zhao
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Patent number: 10857733Abstract: In an example of a three-dimensional (3D) printing method, a polymeric or polymeric composite build material is applied. A fusing agent is selectively applied on at least a portion of the polymeric or polymeric composite build material. The fusing agent includes a discolorable near-infrared absorbing dye, a thiol surfactant, a reducing agent, and a balance of water. Near-infrared radiation is applied to the polymeric or polymeric composite build material at a condition that maintains a temperature of the selectively applied fusing agent below a decomposition temperature of the fusing agent and that allows the discolorable near-infrared absorbing dye to harvest near-infrared radiation energy, in order to fuse the portion of the polymeric or polymeric composite build material in contact with the fusing agent to form a layer and to initiate discoloration of the discolorable near-infrared absorbing dye in the layer.Type: GrantFiled: February 6, 2017Date of Patent: December 8, 2020Assignee: Hewlett-Packard Development Company, L.P.Inventors: Yan Zhao, Lihua Zhao, Paul Olubummo, Aja Hartman, Howard S. Tom
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Publication number: 20190092799Abstract: An example of a fusing agent includes a metal bis(dithiolene) complex, a thiol surfactant, a polar aprotic solvent, and a balance of water. In an example of a method of making the fusing agent, the metal bis(dithiolene) complex is exposed to an aqueous solution including a reducing agent and a thiol surfactant to form a reduced metal bis(dithiolene) complex and to dissolve the reduced metal bis(dithiolene) complex in the aqueous solution. The aqueous solution is incorporated into a vehicle including a water soluble organic solvent and an additive selected from the group consisting of an emulsifier, a surface tension reduction agent, a wetting agent, a scale inhibitor, an anti-deceleration agent, a chelating agent, an antimicrobial agent, and a combination thereof. The fusing agent may be utilized in a three-dimensional printing method and/or incorporated into a three-dimensional printing system.Type: ApplicationFiled: February 6, 2017Publication date: March 28, 2019Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Paul OLUBUMMO, Lihua ZHAO, Aja HARTMAN, Howard S. TOM, Kristopher J. ERICKSON
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Publication number: 20190077080Abstract: In an example of a three-dimensional (3D) printing method, a polymeric or polymeric composite build material is applied. A fusing agent is selectively applied on at least a portion of the polymeric or polymeric composite build material. The fusing agent includes a discolorable near-infrared absorbing dye, a thiol surfactant, a reducing agent, and a balance of water. Near-infrared radiation is applied to the polymeric or polymeric composite build material at a condition that maintains a temperature of the selectively applied fusing agent below a decomposition temperature of the fusing agent and that allows the discolorable near-infrared absorbing dye to harvest near-infrared radiation energy, in order to fuse the portion of the polymeric or polymeric composite build material in contact with the fusing agent to form a layer and to initiate discoloration of the discolorable near-infrared absorbing dye in the layer.Type: ApplicationFiled: February 6, 2017Publication date: March 14, 2019Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Yan ZHAO, Lihua ZHAO, Paul OLUBUMMO, Aja HARTMAN, Howard S. TOM
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Publication number: 20190048219Abstract: An example of a fusing agent includes a tetraphenyldiamine-based dye, alkyldiphenyloxide disulfonate, 1-methyl-2-pyrrolidone, and a balance of water. The fusing agent excludes a strong reducing species. The fusing agent may be incorporated into a three-dimensional printing method or a three-dimensional printing system. In an example of the three-dimensional printing method, a polymeric or polymeric composite build material is applied. The fusing agent is selectively applied on at least a portion of the polymeric or polymeric composite build material. The polymeric or polymeric composite build material is exposed to electromagnetic radiation to fuse the portion of the polymeric or polymeric composite build material in contact with the fusing agent to form a layer.Type: ApplicationFiled: February 6, 2017Publication date: February 14, 2019Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Paul OLUBUMMO, Lihua ZHAO, Kristopher J. ERICKSON, Howard S. TOM, Aja HARTMAN