Patents by Inventor Joseph Leonardo
Joseph Leonardo 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: 20240085009Abstract: A track lighting system having power conductors and data conductors is provided with a wirelessly operated controller unit which is supplied with power from the power conductors and controlled by a remote transmitter. The controller unit supplies addressable controllable signals to the data conductors of the system for effecting individual control of a plurality of output devices. The new system eliminates the need in conventional systems for providing each of the plurality output devices with individual wireless receivers.Type: ApplicationFiled: June 9, 2023Publication date: March 14, 2024Inventors: Brian Joseph Leonardo, Nicholas Matthew Downham, Joseph Anthony Taddeo
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Publication number: 20230249259Abstract: Systems and methods for additive manufacturing are generally described. In some embodiments, an additive manufacturing system may include at least one mechanical fixture in the form of a resilient member for accurately positioning one or more optical fibers without the use of adhesives. The resilient member may, in some embodiments, bias each optical fiber (or similarly, an endcap coupled to a distal end of an optical fiber) against an alignment fixture to maintain a desired position and/or orientation of the fiber or endcap. In some embodiments, an additive manufacturing system may include at least one stray light baffle for reducing the amount of stray light within the optical system.Type: ApplicationFiled: February 3, 2023Publication date: August 10, 2023Applicant: VulcanForms Inc.Inventors: Stephen C. Couitt, Manuel Joseph Leonardo, Michael von Dadelszen, Martin C. Feldmann, Jonathan Robert Silva
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Publication number: 20230056367Abstract: Systems and methods for additive manufacturing are generally described. According to certain aspects, endcaps optically coupled to optical fibers of additive manufacturing systems are provided. In some aspects, methods for reducing a power area density of laser energy within an endcap are provided. The endcaps described herein may be used to at least partially mitigate thermal cycling that may result from the transmission of laser energy through interfaces of an additive manufacturing system.Type: ApplicationFiled: July 20, 2022Publication date: February 23, 2023Applicant: VulcanForms Inc.Inventors: Manuel Joseph Leonardo, Martin C. Feldmann
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Patent number: 8685607Abstract: The continuous process for manufacturing toners disclosed herein includes continuously feeding components of a toner composition into a feed section of a screw extruder at a controlled rate. The continuous process for manufacturing toners may include feeding the components of a toner composition into the feed section of a screw extruder without performing an external or secondary dispersion step. That is to say, the components of the toner composition may be fed directly into the extruder without using dispersions of individual components as used in batch processes. Rather, the toner components are added to the extruder in dry form, melt-mixed, and may be dispersed in aqueous form in the extruder. The process may produce micron-sized toner particles, thus no further size reduction may be necessary.Type: GrantFiled: August 29, 2012Date of Patent: April 1, 2014Assignee: Xerox CorporationInventors: Joo T. Chung, Chieh-Min Cheng, Zhen Lai, Mark E. Mang, Eugene F. Young, Brian Andaya, Joseph Leonardo
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Publication number: 20140065537Abstract: The continuous process for manufacturing toners disclosed herein includes continuously feeding components of a toner composition into a feed section of a screw extruder at a controlled rate. The continuous process for manufacturing toners may include feeding the components of a toner composition into the feed section of a screw extruder without performing an external or secondary dispersion step. That is to say, the components of the toner composition may be fed directly into the extruder without using dispersions of individual components as used in batch processes. Rather, the toner components are added to the extruder in dry form, melt-mixed, and may be dispersed in aqueous form in the extruder. The process may produce micron-sized toner particles, thus no further size reduction may be necessary.Type: ApplicationFiled: August 29, 2012Publication date: March 6, 2014Applicant: XEROX CORPORATIONInventors: Joo T. CHUNG, Chieh-Min CHENG, Zhen LAI, Mark E. MANG, Eugene F. YOUNG, Brian ANDAYA, Joseph LEONARDO
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Patent number: 7572567Abstract: Processes for preparing toner compositions used with electrostatographic imaging members. The processes utilize screw extruders to facilitate continuous dispersion and aggregation of toner components, such as color pigments and wax. The continuous dispersion produces the toner components with more control and better product yield. The products produced are also improved in quality.Type: GrantFiled: November 21, 2006Date of Patent: August 11, 2009Assignee: Xerox CorporationInventors: Joo T. Chung, Zhen Lai, Joseph Leonardo, Derrick Black, Robert Heim
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Publication number: 20080138738Abstract: Processes for preparing toner compositions used with electrostatographic imaging members. The processes utilize screw extruders to facilitate continuous dispersion and aggregation of toner components, such as color pigments and wax. The continuous dispersion produces the toner components with more control and better product yield. The products produced are also improved in quality.Type: ApplicationFiled: November 21, 2006Publication date: June 12, 2008Applicant: Xerox CorporationInventors: Joo T. Chung, Zhen Lai, Chieh-Min Cheng, Joseph Leonardo, Derrick Black, Robert Heim
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Publication number: 20080138739Abstract: Processes for preparing toner compositions used with electrostatographic imaging members. The processes utilize screw extruders to facilitate continuous dispersion and aggregation of toner components, such as color pigments and wax. The continuous dispersion produces the toner components with more control and better product yield. The products produced are also improved in quality.Type: ApplicationFiled: November 21, 2006Publication date: June 12, 2008Applicant: Xerox CorporationInventors: Joo T. Chung, Zhen Lai, Joseph Leonardo, Derrick Black, Robert Heim
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Publication number: 20070248904Abstract: Toner particles are prepared by a process comprising providing an extrusion apparatus; adding resin particles and additive particles to a supply means in the extrusion apparatus; adding the resin particles and the additive particles to a blending chamber in the extrusion apparatus, which blending chamber is maintained at a temperature of from about 50° C. to about 120° C.; blending the resin particles and the additive particles to form a mixture; extruding the resin particles to form extruded material; injecting liquid substances, which have a lower boiling point than the melt temperature of the resin particles, into the blending chamber during extrusion without the application of a vacuum to remove the liquid substances prior to extrusion; and grinding the extruded material to form toner particles.Type: ApplicationFiled: June 22, 2007Publication date: October 25, 2007Applicant: XEROX CORPORATIONInventors: Mark Mang, Joseph Leonardo, Hui Chang, Robert Heim
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Publication number: 20070092825Abstract: The presently disclosed embodiments relate in general to toners for use in electrophotographic apparatuses, such as printers and copiers. More particularly, a toner formulation of at least one binder, at least one colorant, and an embrittling agent, and methods for making the same, is provided wherein the embrittling agent increases grinding rate of the toner formulation.Type: ApplicationFiled: October 20, 2005Publication date: April 26, 2007Applicant: Xerox CorporationInventors: Mark Mang, Hui Chang, Gerald Cox, Joseph Leonardo
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Publication number: 20060121378Abstract: A process for preparing toner compositions using a dry pigment is provided. The process comprises combining a base toner resin composition, a dry pigment, and dispersion agent in a one step process, without the need any pre-processing of the pigments such as by, for example, flushing. The process includes combining the base toner resin, dry pigment and dispersion agent in a processing apparatus such as an extruder. The process may also comprise preparing the toners via an extrusion process utilizing a screw having a configuration designated herein as a Type C screw.Type: ApplicationFiled: December 3, 2004Publication date: June 8, 2006Inventors: Joo Chung, Scott Silence, Joseph Leonardo
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Publication number: 20060046179Abstract: Toner particles are prepared by a process comprising providing an extrusion apparatus; adding resin particles and additive particles to a supply means in the extrusion apparatus; adding the resin particles and the additive particles to a blending chamber in the extrusion apparatus, which blending chamber is maintained at a temperature of from about 50° C. to about 120° C.; blending the resin particles and the additive particles to form a mixture; extruding the resin particles to form extruded material; injecting liquid substances, which have a lower boiling point than the melt temperature of the resin particles, into the blending chamber during extrusion without the application of a vacuum to remove the liquid substances prior to extrusion; and grinding the extruded material to form toner particles.Type: ApplicationFiled: August 31, 2004Publication date: March 2, 2006Applicant: XEROX CORPORATIONInventors: Mark Mang, Joseph Leonardo, Hui Chang, Robert Heim