Patents by Inventor Rachael DONOVAN
Rachael DONOVAN 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: 20240059866Abstract: An example of a multi-fluid kit for three-dimensional (3D) printing includes an elasticity agent to be applied to at least a portion of a build material composition during 3D printing and a fusing agent to be applied to the at least the portion of the build material composition during 3D printing. The elasticity agent includes a plasticizer having: a formula (I): wherein n is an integer ranging from 3 to 8; or a formula (II): wherein m is an integer ranging from 3 to 8. The fusing agent includes an energy absorber.Type: ApplicationFiled: October 6, 2023Publication date: February 22, 2024Inventors: Shannon Reuben Woodruff, Stephen G. Rudisill, Erica Fung, Rachael Donovan
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Patent number: 11787938Abstract: Compositions including polyamides and methods of employing compositions including polyamides are described herein. For instance, composition for three-dimensional (3D) printing can include a polymer build material comprising of at least two polyamides including a first polyamide and a second polyamide, where the first polyamide is present in an amount ranging of from about 95% to about 99% of a total weight of the polymer build material and where the second polyamide is present in an amount ranging of from about 1% to about 5% of the total weight of the polymer build material.Type: GrantFiled: June 10, 2022Date of Patent: October 17, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Carolin Fleischmann, Rachael Donovan, Shannon Reuben Woodruff, Yi Feng
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Patent number: 11780988Abstract: An example of a multi-fluid kit for three-dimensional (3D) printing includes an elasticity agent to be applied to at least a portion of a build material composition during 3D printing and a fusing agent to be applied to the at least the portion of the build material composition during 3D printing. The elasticity agent includes a plasticizer having: a formula (I): wherein n is an integer ranging from 3 to 8; or a formula (II): wherein m is an integer ranging from 3 to 8. The fusing agent includes an energy absorber.Type: GrantFiled: October 24, 2018Date of Patent: October 10, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Shannon Reuben Woodruff, Stephen G. Rudisill, Erica Fung, Rachael Donovan
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Patent number: 11739214Abstract: Compositions including polyamides and methods of employing compositions including polyamides are described herein. For instance, composition for three-dimensional (3D) printing can include a polymer build material comprising of at least two polyamides including a first polyamide and a second polyamide, where the first polyamide is present in an amount ranging of from about 95% to about 99% of a total weight of the polymer build material and where the second polyamide is present in an amount ranging of from about 1% to about 5% of the total weight of the polymer build material.Type: GrantFiled: June 10, 2022Date of Patent: August 29, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Carolin Fleischmann, Rachael Donovan, Shannon Reuben Woodruff, Yi Feng
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Patent number: 11628619Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a semi-crystalline or amorphous thermoplastic polymer having a predicted total dimension change during 3D printing ranging from about ?4% to about 9%. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the semi-crystalline or amorphous thermoplastic polymer in the at least the portion. The fusing agent is a core fusing agent and the energy absorber has absorption at least at wavelengths ranging from 400 nm to 780 nm; or the fusing agent is a primer fusing agent and the energy absorber has absorption at wavelengths ranging from 800 nm to 4000 nm and has transparency at wavelengths ranging from 400 nm to 780 nm.Type: GrantFiled: July 14, 2022Date of Patent: April 18, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Kenneth Flack, Erica Fung, Carolin Fleischmann, Jesiska Tandy, Carmina Querol Esparch, Greg S. Long, Ali Emamjomeh, Shannon Reuben Woodruff, Rachael Donovan
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Patent number: 11613670Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a thermoplastic elastomer having: an avalanche angle ranging from about 49 degrees to about 59 degrees; a break energy ranging from about 55 kJ/kg to about 78 kJ/kg; and an avalanche energy ranging from about 10 kJ/kg to about 27 kJ/kg. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the thermoplastic elastomer in the at least the portion.Type: GrantFiled: June 18, 2018Date of Patent: March 28, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Erica Fung, Carolin Fleischmann, Jesiska Tandy, Carmina Querol Esparch, Greg S. Long, Ali Emamjomeh, Shannon Reuben Woodruff, Rachael Donovan, Kenneth Flack
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Patent number: 11591486Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a polyamide having a melt enthalpy ranging from greater than 5 J/g to less than 150 J/g. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the polyamide in the at least the portion. The fusing agent is a core fusing agent and the energy absorber has absorption at least at wavelengths ranging from 400 nm to 780 nm; or the fusing agent is a primer fusing agent and the energy absorber is a plasmonic resonance absorber having absorption at wavelengths ranging from 800 nm to 4000 nm and having transparency at wavelengths ranging from 400 nm to 780 nm.Type: GrantFiled: June 19, 2018Date of Patent: February 28, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Erica Fung, Carolin Fleischmann, Jesiska Tandy, Carmina Querol Esparch, Greg S. Long, Ali Emamjomeh, Shannon Reuben Woodruff, Rachael Donovan, Kenneth Flack
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Patent number: 11590696Abstract: An example of a three-dimensional (3D) printing composition includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes one of: (i) a thermoplastic elastomer having a flow parameter characterized by a consolidation resistance value ranging from about 8 to about 30, and a tap density characterized by an n1/2 value ranging from 5 taps to 30 taps; or (ii) a polyamide-like material having a flow parameter characterized by a consolidation resistance value ranging from about 75 to about 120, and a tap density characterized by an n1/2 value ranging from 5 taps to 30 taps. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the thermoplastic elastomer or the polyamide-like material in the at least the portion.Type: GrantFiled: June 25, 2018Date of Patent: February 28, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Carolin Fleischmann, Erica Fung, Jesiska Tandy, Greg S. Long, Ali Emamjomeh, Shannon Reuben Woodruff, Rachael Donovan, Kenneth Flack, Carmina Querol Esparch
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Publication number: 20220379554Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a semi-crystalline or amorphous thermoplastic polymer having a predicted total dimension change during 3D printing ranging from about ?4% to about 9%. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the semi-crystalline or amorphous thermoplastic polymer in the at least the portion. The fusing agent is a core fusing agent and the energy absorber has absorption at least at wavelengths ranging from 400 nm to 780 nm; or the fusing agent is a primer fusing agent and the energy absorber has absorption at wavelengths ranging from 800 nm to 4000 nm and has transparency at wavelengths ranging from 400 nm to 780 nm.Type: ApplicationFiled: July 14, 2022Publication date: December 1, 2022Inventors: Kenneth Flack, Erica Fung, Carolin Fleischmann, Jesiska Tandy, Carmina Querol Esparch, Greg S. Long, Ali Emamjomeh, Shannon Reuben Woodruff, Rachael Donovan
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Publication number: 20220315779Abstract: Compositions including polyamides and methods of employing compositions including polyamides are described herein. For instance, composition for three-dimensional (3D) printing can include a polymer build material comprising of at least two polyamides including a first polyamide and a second polyamide, where the first polyamide is present in an amount ranging of from about 95% to about 99% of a total weight of the polymer build material and where the second polyamide is present in an amount ranging of from about 1% to about 5% of the total weight of the polymer build material.Type: ApplicationFiled: June 10, 2022Publication date: October 6, 2022Inventors: Carolin Fleischmann, Rachael Donovan, Shannon Reuben Woodruff, Yi Feng
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Publication number: 20220298369Abstract: Compositions including polyamides and methods of employing compositions including polyamides are described herein. For instance, composition for three-dimensional (3D) printing can include a polymer build material comprising of at least two polyamides including a first polyamide and a second polyamide, where the first polyamide is present in an amount ranging of from about 95% to about 99% of a total weight of the polymer build material and where the second polyamide is present in an amount ranging of from about 1% to about 5% of the total weight of the polymer build material.Type: ApplicationFiled: June 10, 2022Publication date: September 22, 2022Inventors: Carolin Fleischmann, Rachael Donovan, Shannon Reuben Woodruff, Yi Feng
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Publication number: 20220274328Abstract: Three-dimensional printing kits can include a powder bed material and a fusing agent to selectively apply to the powder bed material. The powder bed material can include polymer build particles and cellulose particles. The cellulose particles can be chemically and thermally stable at a melting point temperature of the polymer build particles. The fusing agent can include water and a radiation absorber to absorb radiation energy and convert the radiation energy to heat.Type: ApplicationFiled: October 15, 2019Publication date: September 1, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Jesiska Tandy, Emre Hiro Discekici, Ali Emamjomeh, Alay Yemane, Rachael Donovan
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Patent number: 11426931Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a semi-crystalline or amorphous thermoplastic polymer having a predicted total dimension change during 3D printing ranging from about ?4% to about 9%. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the semi-crystalline or amorphous thermoplastic polymer in the at least the portion. The fusing agent is a core fusing agent and the energy absorber has absorption at least at wavelengths ranging from 400 nm to 780 nm; or the fusing agent is a primer fusing agent and the energy absorber has absorption at wavelengths ranging from 800 nm to 4000 nm and has transparency at wavelengths ranging from 400 nm to 780 nm.Type: GrantFiled: July 31, 2018Date of Patent: August 30, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Kenneth Flack, Erica Fung, Carolin Fleischmann, Jesiska Tandy, Carmina Querol Esparch, Greg S. Long, Ali Emamjomeh, Shannon Reuben Woodruff, Rachael Donovan
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Patent number: 11427720Abstract: Compositions including polyamides and methods of employing compositions including polyamides are described herein. For instance, composition for three-dimensional (3D) printing can include a polymer build material comprising of at least two polyamides including a first polyamide and a second polyamide, where the first polyamide is present in an amount ranging of from about 95% to about 99% of a total weight of the polymer build material and where the second polyamide is present in an amount ranging of from about 1% to about 5% of the total weight of the polymer build material.Type: GrantFiled: November 17, 2017Date of Patent: August 30, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Carolin Fleischmann, Rachael Donovan, Shannon Reuben Woodruff, Yi Feng
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Publication number: 20220267630Abstract: A three-dimensional printing kit can include a powder bed material and a fusing agent to selectively apply to the powder bed material. The powder bed material can include polymer particles and a thermochromic additive. The thermochromic additive can be chemically stable at a melting point temperature of the polymer particles, and the thermochromic additive can exhibit a color change at a color transition temperature that is below the melting point of the polymer particles. The fusing agent can include water and a radiation absorber to absorb radiation energy and convert the radiation energy to heat.Type: ApplicationFiled: September 6, 2019Publication date: August 25, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Erica Fung, Rachael Donovan, Jesiska Tandy, Shannon Reuben Woodruff, Emre Hiro Discekici, Graciela Emma Negri Jimenez, Alay Yemane
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Patent number: 11396130Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes composite particles of titanium dioxide at least partially coated with a polyether block amide polymer. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the composite particles in the at least the portion.Type: GrantFiled: May 11, 2018Date of Patent: July 26, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Carolin Fleischmann, Rachael Donovan, Yi Feng
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Patent number: 11298876Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a polyamide having: an avalanche angle ranging from about 35 degrees to about 55 degrees; a break energy ranging from about 25 kJ/kg to about 57 kJ/kg; and an avalanche energy ranging from about 7 kJ/kg to about 22 kJ/kg. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the polyamide in the at least the portion.Type: GrantFiled: June 19, 2018Date of Patent: April 12, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Erica Fung, Carolin Fleischmann, Jesiska Tandy, Carmina Querol Esparch, Greg S. Long, Ali Emamjomeh, Shannon Reuben Woodruff, Rachael Donovan, Kenneth Flack
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Publication number: 20220064461Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a polyamide having a melt enthalpy ranging from greater than 5 J/g to less than 150 J/g. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the polyamide in the at least the portion. The fusing agent is a core fusing agent and the energy absorber has absorption at least at wavelengths ranging from 400 nm to 780 nm; or the fusing agent is a primer fusing agent and the energy absorber is a plasmonic resonance absorber having absorption at wavelengths ranging from 800 nm to 4000 nm and having transparency at wavelengths ranging from 400 nm to 780 nm.Type: ApplicationFiled: June 19, 2018Publication date: March 3, 2022Inventors: Erica Fung, Carolin Fleischmann, Jesiska Tandy, Carmina Querol Esparch, Greg S. Long, Ali Emamjomeh, Shannon Reuben Woodruff, Rachael Donovan, Kenneth Flack
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Publication number: 20210402682Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a polyamide having: an avalanche angle ranging from about 35 degrees to about 55 degrees; a break energy ranging from about 25 kJ/kg to about 57 kJ/kg; and an avalanche energy ranging from about 7 kJ/kg to about 22 kJ/kg. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the polyamide in the at least the portion.Type: ApplicationFiled: June 19, 2018Publication date: December 30, 2021Inventors: Erica Fung, Carolin Fleischmann, Jesiska Tandy, Carmina Querol Esparch, Greg S. Long, Ali Emamjomeh, Shannon Reuben Woodruff, Rachael Donovan, Kenneth Flack
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Publication number: 20210403749Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a thermoplastic elastomer having: an avalanche angle ranging from about 49 degrees to about 59 degrees; a break energy ranging from about 55 kJ/kg to about 78 kJ/kg; and an avalanche energy ranging from about 10 kJ/kg to about 27 kJ/kg. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the thermoplastic elastomer in the at least the portion.Type: ApplicationFiled: June 18, 2018Publication date: December 30, 2021Inventors: Erica Fung, Carolin Fleischmann, Jasiska Tandy, Carmina Querol Esparch, Greg S. Long, Ali Emamjomeh, Shannon Reuben Woodruff, Rachael Donovan, Kenneth Flack