Patents by Inventor Gary K. Fedder
Gary K. Fedder 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).
-
Publication number: 20240114626Abstract: Disclosed herein are devices comprising stretchable 3D circuits and methods for fabricating the circuits. The fabrication process includes providing in the elastomeric polymer as a substrate and providing conductive interconnects within the substrate encased in an insulating polymer, such as polyimide, to provide a stiffness gradient between the conductive interconnects and the flexible elastomeric substrate. The circuit may be fabricated as a multilayer construction using three-dimensional pillars as vias and as external interconnects to the circuit.Type: ApplicationFiled: December 14, 2023Publication date: April 4, 2024Applicant: CARNEGIE MELLON UNIVERSITYInventors: Gary K. Fedder, Rahul Panat, Jacob Brenneman, Derya Tansel
-
Patent number: 11856708Abstract: Disclosed herein are devices comprising stretchable 3D circuits and methods for fabricating the circuits. The fabrication process includes providing in the elastomeric polymer as a substrate and providing conductive interconnects within the substrate encased in an insulating polymer, such as polyimide, to provide a stiffness gradient between the conductive interconnects and the flexible elastomeric substrate. The circuit may be fabricated as a multilayer construction using three-dimensional pillars as vias and as external interconnects to the circuit.Type: GrantFiled: March 21, 2022Date of Patent: December 26, 2023Assignee: CARNEGIE MELLON UNIVERSITYInventors: Gary K. Fedder, Rahul Panat, Jacob Brenneman, Derya Z. Tansel
-
Publication number: 20220304160Abstract: Disclosed herein are devices comprising stretchable 3D circuits and methods for fabricating the circuits. The fabrication process includes providing in the elastomeric polymer as a substrate and providing conductive interconnects within the substrate encased in an insulating polymer, such as polyimide, to provide a stiffness gradient between the conductive interconnects and the flexible elastomeric substrate. The circuit may be fabricated as a multilayer construction using three-dimensional pillars as vias and as external interconnects to the circuit.Type: ApplicationFiled: March 21, 2022Publication date: September 22, 2022Inventors: Gary K. Fedder, Rahul Panat, Jacob Brenneman, Derya Z. Tansel
-
Patent number: 10608614Abstract: A bi-state bifurcation-based control system and method for nonlinear resonators, which utilizes a control loop to servo on the edge of the bifurcation jump, either at the maximum “on” point prior to the Duffing bifurcation jump or along the rising edge of the parametric bifurcation.Type: GrantFiled: February 20, 2015Date of Patent: March 31, 2020Assignee: CARNEGIE MELLON UNIVERSITYInventors: Gary K. Fedder, Congzhong Guo
-
Publication number: 20200029428Abstract: A flexible and stretchable integrated electronic device comprising a substrate having a stiffness gradient, wherein a rigid electronic device is embedded within the substrate. The stiffness gradient within the substrate prevents delamination at the interface between the substrate and the embedded device. A method of fabricating an integrated electronic device having a stiffness gradient comprises applying a curing agent to an uncured polymer base material.Type: ApplicationFiled: September 17, 2019Publication date: January 23, 2020Applicant: CARNEGIE MELLON UNIVERSITYInventors: Gary K. Fedder, Carmel Majidi, Philip R. LeDuc, Lee E. Weiss, Christopher J. Bettinger, Naser Naserifar
-
Patent number: 10462897Abstract: A flexible and stretchable integrated electronic device comprising a substrate having a stiffness gradient, wherein a rigid electronic device is embedded within the substrate. The stiffness gradient within the substrate prevents delamination at the interface between the substrate and the embedded device. A method of fabricating an integrated electronic device having a stiffness gradient comprises applying a curing agent to an uncured polymer base material.Type: GrantFiled: March 16, 2018Date of Patent: October 29, 2019Assignee: CARNEGIE MELLON UNIVERSITYInventors: Gary K. Fedder, Carmel Majidi, Philip R. LeDuc, Lee E. Weiss, Christopher J. Bettinger, Naser Naserifar
-
Patent number: 10292656Abstract: Methods of fabricating ultra-miniature, ultra-compliant probe arrays through spin coating, wherein a dissolvable material in hydrogel form is dispensed onto an assembled mold with wires. Once the dissolvable material is dispensed onto the mold, centrifuging spin casts the material by evaporating the solvent, forming a dried dissolvable polymer. Finally, a device is used with water to remove excess dissolvable material to obtain a dissolvable needle with wires.Type: GrantFiled: December 8, 2015Date of Patent: May 21, 2019Assignee: CARNEGIE MELLON UNIVERSITYInventors: Gary K. Fedder, Burak Ozdoganlar, Peter J. Gilgunn
-
Patent number: 10039651Abstract: The disclosure describes a direct skeletal attachment (DSA) device including a micro-miniature chainmail skin-to-DSA interface. The interface comprises various porous architectures for skin ingrowth and integration as barriers against pathogens. Failure of skin-to-DSA interfaces can occur due to mismatches in mechanical compliance between pliable skin and more rigid DSA interfaces. To address this problem, in embodiments disclosed herein is an interface having a gradient in mechanical compliance or link mobility, ranging from fully flexible, to less compliant, to rigid where it attaches to the main DSA body.Type: GrantFiled: January 14, 2016Date of Patent: August 7, 2018Assignee: CARNEGIE MELLON UNIVERSITY, a Pennsylvania Non-Profit CorporationInventors: Lee E. Weiss, Gary K. Fedder
-
Publication number: 20180206336Abstract: A flexible and stretchable integrated electronic device comprising a substrate having a stiffness gradient, wherein a rigid electronic device is embedded within the substrate. The stiffness gradient within the substrate prevents delamination at the interface between the substrate and the embedded device. A method of fabricating an integrated electronic device having a stiffness gradient comprises applying a curing agent to an uncured polymer base material.Type: ApplicationFiled: March 16, 2018Publication date: July 19, 2018Applicant: CARNEGIE MELLON UNIVERSITYInventors: Gary K. Fedder, Carmel Majidi, Philip R. LeDuc, Lee E. Weiss, Christopher J. Bettinger, Naser Naserifar
-
Patent number: 9899939Abstract: There is provided a system and method for harvesting electrical energy from interaction with papers. The system comprising an electret disposed between a first electrode and a second electrode, and an interactive device connected to one end of the first electrode and one end of the second electrode to provide an electrical potential, the interactive device configured to receive the electrical potential by moving the second electrode relative to the electret for generating electrical energy. Interactive devices that can be activated by the generator can include a light-emitting diode, an electronic paper display, an infrared communication, and a buzzer.Type: GrantFiled: January 2, 2014Date of Patent: February 20, 2018Assignee: Disney Enterprises, Inc.Inventors: Mustafa Emre Karagozler, Ivan Poupyrev, Gary K. Fedder
-
Publication number: 20160199201Abstract: The disclosure describes a direct skeletal attachment (DSA) device including a micro-miniature chainmail skin-to-DSA interface. The interface comprises various porous architectures for skin ingrowth and integration as barriers against pathogens. Failure of skin-to-DSA interfaces can occur due to mismatches in mechanical compliance between pliable skin and more rigid DSA interfaces. To address this problem, in embodiments disclosed herein is an interface having a gradient in mechanical compliance or link mobility, ranging from fully flexible, to less compliant, to rigid where it attaches to the main DSA body.Type: ApplicationFiled: January 14, 2016Publication date: July 14, 2016Applicant: CARNEGIE MELLON UNIVERSITYInventors: Lee E. Weiss, Gary K. Fedder
-
Publication number: 20160128636Abstract: Methods, systems and apparatuses of ultra-miniature, ultra-compliant probe arrays that allows for design flexibility to match the stiffness of the tissue it is being applied to, such as the brain tissue, in all three axes (x, y and z), with interconnect cross section smaller than cell dimensions. Stiffness matching requires specific geometric and fabrication approaches, commonly leading to ultra-thin probe wires. Sizing of the electrodes for specific cell dimensions reduces glial formation. Further reduction in stiffness is obtained by incorporating different geometric features to the electrode, such as meandering the electrode wires. The small thickness and geometric features of the wires commonly result in very high compliance.Type: ApplicationFiled: December 8, 2015Publication date: May 12, 2016Applicant: CARNEGIE MELLON UNIVERSITY, a Pennsylvania Non-Profit CorporationInventors: Gary K. Fedder, Burak Ozdoganlar, Peter J. Gilgunn
-
Publication number: 20160072472Abstract: A bi-state bifurcation-based control system and method for nonlinear resonators, which utilizes a control loop to servo on the edge of the bifurcation jump, either at the maximum “on” point prior to the Duffing bifurcation jump or along the rising edge of the parametric bifurcation.Type: ApplicationFiled: February 20, 2015Publication date: March 10, 2016Applicant: CARNEGIE MELLON UNIVERSITY, a Pennsylvania Non-Profit CorporationInventors: Gary K. Fedder, Congzhong Guo
-
Patent number: 9241651Abstract: Methods, systems and apparatuses of ultra-miniature, ultra-compliant probe arrays that allows for design flexibility to match the stiffness of the tissue it is being applied to, such as the brain tissue, in all three axes (x, y and z), with interconnect cross section smaller than cell dimensions. Stiffness matching requires specific geometric and fabrication approaches, commonly leading to ultra-thin probe wires. Sizing of the electrodes for specific cell dimensions reduces glial formation. Further reduction in stiffness is obtained by incorporating different geometric features to the electrode, such as meandering the electrode wires. The small thickness and geometric features of the wires commonly result in very high compliance.Type: GrantFiled: November 19, 2012Date of Patent: January 26, 2016Assignee: CARNEGIE MELLON UNIVERSITYInventors: Gary K. Fedder, Burak Ozdoganlar, Peter J. Gilgunn
-
Publication number: 20150097465Abstract: There is provided a system and method for harvesting electrical energy from interaction with papers. The system comprising an electret disposed between a first electrode and a second electrode, and an interactive device connected to one end of the first electrode and one end of the second electrode to provide an electrical potential, the interactive device configured to receive the electrical potential by moving the second electrode relative to the electret for generating electrical energy. Interactive devices that can be activated by the generator can include a light-emitting diode, an electronic paper display, an infrared communication, and a buzzer.Type: ApplicationFiled: January 2, 2014Publication date: April 9, 2015Applicant: Disney Enterprises, Inc.Inventors: Mustafa Emre Karagozler, Ivan Poupyrev, Gary K. Fedder
-
Patent number: 8501117Abstract: Apparatuses, systems, and methods utilizing capillary action and to control the movement or placement of liquids or other materials in micro-devices and nano-devices. In some embodiments, the present invention may be used to control polymer addition to micro-cantilevers and nano-cantilevers for biological sensing, chemical sensing, and other sensing. In other embodiments, the present invention may be used to deliver adhesives, dielectrics, chemo resistor materials, and other materials to micro-devices and nano-devices.Type: GrantFiled: June 5, 2007Date of Patent: August 6, 2013Assignee: Carnegie Mellon UniversityInventors: Sarah S. Bedair, Gary K. Fedder
-
Publication number: 20130197468Abstract: Methods and apparatuses for delivery of biologically active material and/or sensors to a target organ or system. The apparatuses allow for specific, controlled delivery of the biologically active material and targeted placement of sensors. The apparatuses may be fabricated from cellular and/or acellular biological active components to promote integration of sensors into tissue and achieve appropriate release of biologically active molecules. The apparatuses may be fabricated from plasma-containing materials or other biopolymers such that the apparatus will resorbed into the tissue following insertion. The biologically active cellular or acellular component may be incorporated into that material may then serve as the source of the therapeutic biologically active component. The apparatus may take the form of a screw, though numerous shapes arc contemplated.Type: ApplicationFiled: January 28, 2013Publication date: August 1, 2013Applicants: CARNEGIE MELLON UNIVERSITY, University of Pittsburgh-of the Commonwealth System of Higher EducationInventors: David SCHWARTZMAN, Lee E. Weiss, Phil Gordon Campbell, Gary K. Fedder
-
Patent number: 8243397Abstract: The present disclosure is directed to a micromachined rotary actuator constructed of a central portion and an outer portion at least partially surrounding the central portion and separated from the central portion by an in-plane gap. A plurality of arms are each connected at one end to the central portion and at another end to the outer portion so as to span the in-plane gap. The arms are constructed of a plurality of horizontally stacked materials positioned to enable the arms to bend in-plane when heated. Conductors are positioned within the actuator for heating the arms. Because of the rules governing abstracts, this abstract should not be used to construe the claims.Type: GrantFiled: June 20, 2007Date of Patent: August 14, 2012Assignee: Carnegie Mellon UniversityInventors: William C. Messner, James A. Bain, Gary K. Fedder
-
Patent number: 7749792Abstract: The present disclosure is broadly directed to a method for designing new MEMS micro-movers, particularly suited for, but not limited to, CMOS fabrication techniques, that are capable of large lateral displacement for tuning capacitors, fabricating capacitors, self-assembly of small gaps in CMOS processes, fabricating latching structures and other applications where lateral micro-positioning on the order of up to 10 ?m, or greater, is desired. Principles of self-assembly and electro-thermal actuation are used for designing micro-movers. In self-assembly, motion is induced in specific beams by designing a lateral effective residual stress gradient within the beams. The lateral residual stress gradient arises from purposefully offsetting certain layers of one material versus another material. For example, lower metal layers may be side by side with dielectric layers, both of which are positioned beneath a top metal layer of a CMOS-MEMS beam.Type: GrantFiled: June 2, 2004Date of Patent: July 6, 2010Assignee: Carnegie Mellon UniversityInventors: Gary K. Fedder, Altug Oz
-
Patent number: 7556775Abstract: A microelectro-mechanical chemical sensor includes an active cantilever beam having a chemically selective material layer disposed thereon and at least one, preferably two, resistors with the resistance corresponding to the cantilever beam deflection. The sensor also has at least two, and preferably four, auxiliary cantilever beams adjacent to the active cantilever and attached to the same substrate, each having a piezoresistor disposed thereon. The piezoresistors are elements of a Wheatstone bridge, and the Wheatstone bridge output indicates the amount of a predetermined target chemical sorbed by the chemically selective material layer. The sensor is electrostatically actuated in order to monitor the resonant frequency.Type: GrantFiled: May 25, 2005Date of Patent: July 7, 2009Assignee: The United States of America as represented by the Secretary of the NavyInventors: Robert Andrew McGill, Ioana Voiculescu, Gary K. Fedder