Patents by Inventor James A. Lentz
James A. Lentz 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: 20240359372Abstract: Methods are disclosed for fabricating molds for forming waveguides with integrated spacers for forming eyepieces. The molds are formed by etching features (e.g., 1 ?m to 1000 ?m deep) into a substrate comprising single crystalline material using an anisotropic wet etch. The etch masks for defining the large features may comprise a plurality of holes, wherein the size and shape of each hole at least partially determine the depth of the corresponding large feature. The holes may be aligned along a crystal axis of the substrate and the etching may automatically stop due to the crystal structure of the substrate. The patterned substrate may be utilized as a mold onto which a flowable polymer may be introduced and allowed to harden. Hardened polymer in the holes may form a waveguide with integrated spacers. The mold may be also used to fabricate a platform comprising a plurality of vertically extending microstructures of precise heights, to test the curvature or flatness of a sample, e.g.Type: ApplicationFiled: August 17, 2022Publication date: October 31, 2024Inventors: Shuqiang YANG, Vikramjit SINGH, David James LENTZ, Frank Y. XU, Marlon Edward MENEZES, Yanhua WANG
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Patent number: 8545709Abstract: Thickness of a residual layer may be altered to control critical dimension of features in a patterned layer provided by an imprint lithography process. The thickness of the residual layer may be directly proportional or inversely proportional to the critical dimension of features. Dispensing techniques and material selection may also provide control of the critical dimension of features in the patterned layer.Type: GrantFiled: April 6, 2012Date of Patent: October 1, 2013Assignee: Molecular Imprints, Inc.Inventors: Cynthia B. Brooks, Dwayne L. LaBrake, Niyaz Khusnatdinov, Michael N. Miller, Sidlgata V. Sreenivasan, David James Lentz, Frank Y. Xu
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Publication number: 20120187085Abstract: Thickness of a residual layer may be altered to control critical dimension of features in a patterned layer provided by an imprint lithography process. The thickness of the residual layer may be directly proportional or inversely proportional to the critical dimension of features. Dispensing techniques and material selection may also provide control of the critical dimension of features in the patterned layer.Type: ApplicationFiled: April 6, 2012Publication date: July 26, 2012Applicant: Molecular Imprints, Inc.Inventors: Cynthia B. Brooks, Dwayne L. LaBrake, Niyaz Khusnatdinov, Michael N. Miller, Sidlgata V. Sreenivasan, David James Lentz, Frank Y. Xu
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Patent number: 8076607Abstract: An improved apparatus and method for applying a plurality of raised features at select locations on a metallic substrate using a high-powered radiant energy source, such as a laser, in combination with powder metallurgy such that the resultant substrate surface exhibits increased slip-resistance resulting from the presence of the raised features on the substrate.Type: GrantFiled: June 27, 2007Date of Patent: December 13, 2011Assignee: Ross Technology CorporationInventor: James Lentz
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Publication number: 20090212012Abstract: Thickness of a residual layer may be altered to control critical dimension of features in a patterned layer provided by an imprint lithography process. The thickness of the residual layer may be directly proportional or inversely proportional to the critical dimension of features. Dispensing techniques and material selection may also provide control of the critical dimension of features in the patterned layer.Type: ApplicationFiled: February 25, 2009Publication date: August 27, 2009Applicant: MOLECULAR IMPRINTS, INC.Inventors: Cynthia B. Brooks, Dwayne L. LaBrake, Niyaz Khusnatdinov, Michael N. Miller, Sidlgata V. Sreenivasan, David James Lentz, Frank Y. Xu
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Publication number: 20090001058Abstract: An improved apparatus and method for applying a plurality of raised features at select locations on a metallic substrate using a high-powered radiant energy source, such as a laser, in combination with powder metallurgy such that the resultant substrate surface exhibits increased slip-resistance resulting from the presence of the raised features on the substrate.Type: ApplicationFiled: June 27, 2007Publication date: January 1, 2009Inventor: James Lentz
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Publication number: 20070168873Abstract: A computer controlled graphical user interface implementation comprising displaying a set of graphic tools in a primary container location on the display in combination with an implement for using a selected tool to create a graphic object at a selected display location that is changeable as the object is being created in which there are provided functions responsive to the creation of the graphic object for displaying a secondary container containing a duplicate of the selected tool proximate the location of the graphic object, the secondary container being dynamically moveable responsive to the graphics object creation.Type: ApplicationFiled: January 19, 2006Publication date: July 19, 2007Inventor: James Lentz
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Publication number: 20060080614Abstract: An apparatus, system and method of providing feedback to a presenter in an e-meeting in which visual information is being presented are provided. During presentation, the computer system of each participant is monitored to ensure that the window in which the visual information is being presented (i.e., the e-meeting window) is the window in focus. If the e-meeting window is not the window in focus, the presenter is notified. Generally, to notify the presenter, a status message is sent from the computer system on which the e-meeting window is not the window in focus to a server. There, status messages from different computer systems are combined together. The combined status message is then periodically sent to the presenter.Type: ApplicationFiled: October 7, 2004Publication date: April 13, 2006Applicant: International Business Machines CorporationInventor: James Lentz
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Publication number: 20030112269Abstract: The present invention is embodied in a configurable graphical element for tracking and monitoring dynamic properties of resources and events coupled to a computing environment. In general, the present invention includes an interactive configurable graphical element with a software control that monitors resources and events. The graphical element interactivity provides the monitored information to a user with a status display area having configurable threshold trigger points and can also include one or more rearm trigger points. The user configurable trigger points are located within one end of the status display area and include at least one user configurable threshold point and at least one rearm set point. The monitoring display and configuration functions are combined in a single graphical element for reducing complexity and easing the use of monitoring applications.Type: ApplicationFiled: December 17, 2001Publication date: June 19, 2003Applicant: International Business Machines CorporationInventors: James Lentz, Jack A. Alford, Kenneth R. Banning
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Patent number: 5922416Abstract: A method of forming a fuser roll by disposing a substantially uncured fluoroelastomer composition which is substantially free of metal containing material on a substrate, and curing the fluoroelastomer material. The fluoroelastomer has at least about 23.4 mole percent hexafluoropropylene and can be cured by electron beam treatment, fugitive base treatment or by the use of blocked/hindered bases.Type: GrantFiled: December 12, 1995Date of Patent: July 13, 1999Assignee: Ames Rubber CorporationInventors: Chris F. DelRosario, James A. Lentz
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Patent number: 5474850Abstract: A fluoroelastomer composition free of metal or metal containing compounds, such as metal, metal alloys, metal salts or metal oxide suitable for the upper layer of a fuser roll which does not require the use of mercapto functional active release agents to prevent offset is provided. The fluoroelastomer compositions contain at least 23.4 mole percent hexafluoropropylene. They can be cured by electron beam treatment, fugitive base treatment or by the use of blocked/hindered bases.Type: GrantFiled: June 30, 1994Date of Patent: December 12, 1995Assignee: Ames Rubber CorporationInventors: Chris F. DelRosario, James A. Lentz
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Patent number: 4314006Abstract: A document transport belt for use in an automatic document handler in an electrostatographic copying machine is provided, which is made from an ethylene propylene diene rubber. The document transport belt of the invention has a stable coefficient of friction, high resistance to ozone attack, superior whiteness stability, high resistance to abrasion, and outstanding mechanical stability so that it does not require the frequent tension adjustment after operating under machine conditions for a period of time.Type: GrantFiled: June 26, 1980Date of Patent: February 2, 1982Assignee: Xerox CorporationInventors: James A. Lentz, Joseph H. Moriconi
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Patent number: 4264181Abstract: A fuser member and method of fusing or fixing thermoplastic resin powder images to a substrate in a fuser assembly of the type wherein a polymeric release agent having functional groups is applied to the surface of the fuser member is disclosed. The fuser member comprises a base member having an elastomer surface with metal-containing filler therein, said elastomer being cured with a nucleophilic addition curing agent.Type: GrantFiled: April 4, 1979Date of Patent: April 28, 1981Assignee: Xerox CorporationInventors: James A. Lentz, Paul D. DePalma, Rabin Moser
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Patent number: 4257699Abstract: A fuser member, fuser assembly and method of fusing or fixing thermoplastic resin powder images to a substrate in a fuser assembly of the type wherein a polymeric release agent having functional groups is applied to the surface of the fuser member is disclosed. The fuser member comprises a base member having at least two layers of elastomer thereon, at least the outer layer elastomer surface having a metal-containing filler therein. Exemplary of such a fuser member is an aluminum base member coated with a first layer of poly(vinylidene fluoride-hexafluoropropylene) copolymer optionally having a metal-containing filler, such as lead oxide, dispersed therein and at least a second layer of poly(vinylidene fluoride-hexafluoropropylene) copolymer having metal-containing filler, such as lead oxide, dispersed therein coated upon said first layer.Type: GrantFiled: April 4, 1979Date of Patent: March 24, 1981Assignee: Xerox CorporationInventor: James A. Lentz
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Patent number: 4116894Abstract: Butadiene copolymers having controlled electrical life and controlled resistivity are described. A method is disclosed for enhancing the electrical life of butadiene copolymers having solubilized conductivity control agents incorporated therein by varying specified quantities of terminally unsaturated hydrocarbon nitriles in copolymers of the butadiene and the specified nitriles by using mixtures of such copolymers having conductivity control agents therein. The method and polymers are useful for enhancing the electrical life and polymer stability in xerographic devices where control of conductivity and/or relaxation behavior is important, e.g., in bias transfer rolls.Type: GrantFiled: July 1, 1976Date of Patent: September 26, 1978Assignee: Xerox CorporationInventors: James A. Lentz, George J. Safford
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Patent number: 4083092Abstract: A pressure roll for use in a roll fuser for fixing toner images to copy sheets by the application of heat and pressure, is described. The roll is characterized by a rigid core covered with a relatively thick layer of organic rubber with a relatively thinner sleeve or layer of material acting as an air barrier to the organic rubber to prevent oxidative degradation. The organic rubbers are characterized by small compression deflection decreases even after exposure to high temperatures, under pressure for prolonged periods of time. Highly crosslinked organic rubbers cured with non-sulfur crosslinking agents are preferred organic rubbers.Type: GrantFiled: June 3, 1977Date of Patent: April 11, 1978Assignee: Xerox CorporationInventors: George R. Imperial, James A. Lentz
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Patent number: 4062812Abstract: A method is disclosed for extending the electrical life of copolymers of butadiene and terminally unsaturated hydrocarbon nitriles by incorporating salts having asymmetrical quaternary ammonium cations or salts having structural charge specific anions therein. The method and polymers are useful for extending the functional electrical life and electrical stability of materials used in xerographic devices where control of and minimizing of the variations in the resistivity under applied voltages vs. time is important, e.g., in bias transfer rolls.Type: GrantFiled: July 1, 1976Date of Patent: December 13, 1977Assignee: Xerox CorporationInventors: George J. Safford, James A. Lentz
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Patent number: 4058879Abstract: Butadiene copolymers having controlled electrical life and controlled resistivity are described. A method is disclosed for enhancing the electrical life of butadiene copolymers having solubilized conductivity control agents incorporated therein by varying specified quantities of terminally unsaturated hydrocarbon nitriles in copolymers of the butadiene and the specified nitriles by using mixtures of such copolymers having conductivity control agents therein. The method and polymers are useful for enhancing the electrical life and polymer stability in xerographic devices where control of conductivity and/or relaxation behavior is important, e.g., in bias transfer rolls.Type: GrantFiled: July 1, 1976Date of Patent: November 22, 1977Assignee: Xerox CorporationInventors: James A. Lentz, George J. Safford
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Patent number: 4014606Abstract: An electrostatic reproduction machine has a photoconductive member and a transfer roller in contact therewith, the roller having a texturized surface formed so as to prevent or minimize the possibility of a sheet of paper wrapping itself around the roller as the sheet is passing between the photoconductive member and the roller during the transfer operation.Type: GrantFiled: August 13, 1975Date of Patent: March 29, 1977Assignee: Xerox CorporationInventors: Donald A. Seanor, James A. Lentz, Thomas Meagher
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Patent number: PP20590Abstract: A new and distinct variety of Jonagold apple tree, ‘Lentz Jonagold,’ originating as a limb mutation of the Malus domestica variety of ‘Rubinstar’ (U.S. Plant Pat. No. 7,167). This new variety is unique from its parent and other Jonagold cultivars in the early coloration of the fruit, the high percentage of coloration of the fruit and the red coloration of the leaf petiole and mid-vein.Type: GrantFiled: May 20, 2008Date of Patent: December 22, 2009Assignee: International Plant Management, Inc.Inventor: William James Lentz