Patents by Inventor John T. Welch
John T. Welch 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: 20240151975Abstract: A display subsystem for a virtual image generation system for use by an end user comprises a planar waveguide apparatus, an optical fiber, at least one light source configured for emitting light from a distal end of the optical fiber, and a collimation element mounted to a distal end of the optical fiber for collimating light from the optical fiber. The virtual image generation system further comprises a mechanical drive assembly to which the optical fiber is mounted to the drive assembly. The mechanical drive assembly is configured for displacing the distal end of the optical fiber, along with the collimation element, in accordance with a scan pattern. The virtual image generation system further comprises an optical waveguide input apparatus configured for directing the collimated light from the collimation element down the planar waveguide apparatus, such that the planar waveguide apparatus displays image frames to the end user.Type: ApplicationFiled: January 11, 2024Publication date: May 9, 2024Applicant: Magic Leap, Inc.Inventors: Brian T. Schowengerdt, Lionel Ernest Edwin, Ivan Yeoh, Aaron Mark Schuelke, William Hudson Welch, John Graham Macnamara
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Patent number: 11935206Abstract: A virtual image generation system comprises a planar optical waveguide having opposing first and second faces, an in-coupling (IC) element configured for optically coupling a collimated light beam from an image projection assembly into the planar optical waveguide as an in-coupled light beam, a first orthogonal pupil expansion (OPE) element associated with the first face of the planar optical waveguide for splitting the in-coupled light beam into a first set of orthogonal light beamlets, a second orthogonal pupil expansion (OPE) element associated with the second face of the planar optical waveguide for splitting the in-coupled light beam into a second set of orthogonal light beamlets, and an exit pupil expansion (EPE) element associated with the planar optical waveguide for splitting the first and second sets of orthogonal light beamlets into an array of out-coupled light beamlets that exit the planar optical waveguide.Type: GrantFiled: April 5, 2023Date of Patent: March 19, 2024Assignee: Magic Leap, IncInventors: Brian T. Schowengerdt, Mathew D. Watson, David Tinch, Ivan Li Chuen Yeoh, John Graham Macnamara, Lionel Ernest Edwin, Michael Anthony Klug, William Hudson Welch
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Publication number: 20120157396Abstract: Applicants claim the use of a pyrazine compound of formula I: or a salt thereof, for treating or preventing leishmaniases, and diseases and disorders caused by Trypanosoma cruzi or Trypanosoma brucei, and for inducing immunostimulation.Type: ApplicationFiled: November 21, 2011Publication date: June 21, 2012Applicants: THE RESEARCH FOUNDATION OF STATE UNIVERSITY OF NEW YORK, UNITED STATES GOVERMENT AS REPRESENTED BY THE DEPARTMENT OF VETERANS AFFAIR, CORNELL UNIVERSITYInventors: John T. WELCH, Susana MENDEZ, Michael H. CYNAMON
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Publication number: 20090023953Abstract: There are provided SF5-containing amino acids of the general formulas and processes for preparing same. Other embodiments are also disclosed.Type: ApplicationFiled: February 19, 2008Publication date: January 22, 2009Applicant: The Research Foundation of State University of New YorkInventor: John T. WELCH
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Patent number: 7135962Abstract: A security system in a vehicle extends its protection to installed equipment of the vehicle, such as audio components, navigation systems, and entertainment systems. The installed equipment is armed and disarmed by the security system, preventing the equipment from normal functioning after unauthorized removal. The security system further enables programming, monitoring, and diagnosing of the installed equipment through the security system's remote control, through a configuration and maintenance tool that connects to the security system, or through other items of installed equipment within the vehicle, such as a rear-seat entertainment system.Type: GrantFiled: December 20, 2004Date of Patent: November 14, 2006Assignee: Dei Headquarters, Inc.Inventors: John Durbin, Mark Edward Rutledge, Bounthavy Kenneth Manivone, John T. Welch, John F. Wilson, Neil John Sturtevant, James S. Turner
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Patent number: 7082772Abstract: A cooling system for audio equipment uses a temperature sensor and Peltier effect module in a feedback control loop. The cooling system reads the temperature sensor to obtain the temperature of an audio component of the equipment, and adjusts the drive for the Peltier effect module that cools the audio component, to prevent overheating of the component. The cooling system may include an autonomous power supply that generates electric power from the audio signal driving a loudspeaker of the audio system. In another embodiment, the cooling system cools an audio component installed in a vehicle, even when the vehicle is unattended. To prevent discharge of the vehicle's battery, the cooling system employs a battery supervisor for turning the cooling system off when the battery has discharged down to a predetermined state.Type: GrantFiled: August 20, 2003Date of Patent: August 1, 2006Assignee: Directed Electronics, Inc.Inventor: John T. Welch
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Patent number: 6613924Abstract: Organosilver complexes with &bgr;-diketonates and neutral coordinating ligands are useful as silver precursors in chemical vapor deposition processes. The &bgr;-diketonates include 1,1,1,5,5,5-hexafluoro-2,4-pentanedionate (hfac), acetylacetonate (acac), 2,2,6,6-tetramethyl-3,5-heptanedionate (tmhd), 1,1,1-trifluoro-2,4-pentanedionate, (tfac), 2,2,7-trimethyl-3,5-octanedionate (tmod), 1,1,1-trifluoro-5,5-dimethyl-2,4-pentanedionate (tfh) 1,1,1,2,2,3,3,7,7,8,8,9,9,9-tetradecafluoro-4,6-nonanedionate (tdf). Neutral coordinating ligands include triphenylphosphine, tributylphosphine, pyridine, tetramethylethanediamine (TMEDA) and tetramethylpropanediamine (TMPDA).Type: GrantFiled: November 23, 1999Date of Patent: September 2, 2003Assignee: Research Foundation of State of New YorkInventors: John T. Welch, Silvana C. Ngo, Kulbinder K. Banger
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Patent number: 6446031Abstract: A system of physical optics is provided which is employed in the design of indoor wireless communication systems, where transmitters are placed and oriented within a model of a building complex. The system provides for forward tracing of rays, which makes practical signal coverage displays that respond interactively to communication system design changes. The physical optics system consists of a method of generating semi-rectangular cone elements covering space, and a method of enumerating receiver test points within each cone for accumulation and display of electromagnetic signal coverage.Type: GrantFiled: January 22, 1999Date of Patent: September 3, 2002Assignee: The University of AkronInventor: John T. Welch
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Patent number: 6399607Abstract: Methods for treating diseases involving pyrazinamide-resistant mycobacteria comprise administering to a mammal in need of treatment a therapeutically effective amount of a combination of rifamycin and a compound of formula I: wherein R1 is hydrogen haloalkyl, or lower alkyl; R2 and R3 are independently chosen from alkyl, substituted alkyl, cycloalkyl, aryl, substituted aryl, alkylaryl and substituted alkylaryl, or R2 and R3 taken together form a five- or six-membered heterocyclic or substituted heterocyclic ring; and X is hydrogen, halogen, or lower alkyl; or a pharmaceutically acceptable salt thereof.Type: GrantFiled: June 30, 2000Date of Patent: June 4, 2002Assignee: Research Foundation-State University of New YorkInventors: John T. Welch, Leonid B. Heifets, Michael H. Cynamon
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Patent number: 6359159Abstract: Chemical vapor deposition processes utilize as precursors volatile metal complexes with ligands containing metalloid elements silicon, germanium, tin or lead.Type: GrantFiled: December 4, 2000Date of Patent: March 19, 2002Assignee: Research Foundation of State University of New YorkInventors: John T. Welch, Paul J. Toscano, Rolf Claessen, Andrei Kornilov, Kulbinder Kumar Banger
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Patent number: 6340768Abstract: Volatile metal complexes with &agr;-sila-&bgr;-diketonate ligands containing haloalkyl, and particularly, perfluoroalkyl, substitutents are useful as metal precursors for chemical vapor deposition processes and as nanostructured materials containing fluorous domains.Type: GrantFiled: December 4, 2000Date of Patent: January 22, 2002Assignee: Research Foundation of State University of New YorkInventors: John T. Welch, Kulbinder Kumar Banger, Seiichiro Higashiya, Silvana C. Ngo
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Patent number: 6184403Abstract: Chemical vapor deposition processes utilize as precursors volatile metal complexes with ligands containing metalloid elements silicon, germanium, tin or lead.Type: GrantFiled: May 19, 1999Date of Patent: February 6, 2001Assignee: Research Foundation of State University of New YorkInventors: John T. Welch, Paul J. Toscano, Rolf Claessen, Andrei Kornilov, Kulbinder Kumar Banger
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Patent number: 6099903Abstract: Chemical vapor deposition processes utilize as precursors volatile metal complexes with ligands containing metalloid elements silicon, germanium, tin or lead.Type: GrantFiled: May 19, 1999Date of Patent: August 8, 2000Assignee: Research Foundation of State University of New YorkInventors: Alain E. Kaloyeros, John T. Welch, Paul J. Toscano, Rolf Claessen, Andrei Kornilov, Kulbinder Kumar Banger
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Patent number: 5986120Abstract: A composition relating to metal-triflamide complexes useful as catalysts for the syndiotactic polymerization of styrene is disclosed.Type: GrantFiled: February 10, 1998Date of Patent: November 16, 1999Assignee: The Research Foundation of the State University of New YorkInventors: John T. Welch, Rolf Claessen, Silvana Ngo
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Patent number: 5777869Abstract: An improved method of implementing and solving relay ladder logic, such as in programmable logic controllers, more efficiently to allow greater flexibility is provided. Solving relay ladder logic is performed with scan times dependent only upon the number of input and state changes on a scan, and the resulting number of flow changes at ladder connectors. The scan time will therefore be independent of the size of the ladder. The method comprises the steps of recording the structure of a relay ladder and the current flow on the ladder via a ladder coding convention which specifies adjacent relay ladder connections for a particular diagram. Based upon input or state variable changes or events, the process of the invention will act to toggle all of the ladder contacts associated with these events between open and closed positions. This procedure is accomplished by following precomputed lists of such contacts which will be affected by a particular event or change in system model variables.Type: GrantFiled: December 9, 1994Date of Patent: July 7, 1998Assignee: The University of AkronInventor: John T. Welch
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Patent number: 5731712Abstract: An architecture is provided for field programmable gate army (FPGA) devices which implement relay ladder logic in PLC systems. Once the device is programmed, the implemented logic is executed in rung parallel fashion at electronic speeds. A direct correspondence of these devices in detail to relay ladder logic assures that technology mapping software for the FPGA device will run sufficiently fast for use in PLC systems. A reversible device programming method is required, so that the device can be reprogrammed conveniently to different relay ladder models. The architecture scales to families of devices of differing sizes and resources. A basic relay ladder logic is implemented, which supports various relay ladder logic dialects.Type: GrantFiled: November 9, 1995Date of Patent: March 24, 1998Inventor: John T. Welch
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Patent number: 5643912Abstract: Compounds of formula II ##STR1## wherein R.sup.1 is a hydrocarbon, halogenated hydrocarbon, polyether, substituted phenyl, substituted benzyl or alkylamine; and R.sup.2, R.sup.3 and R.sup.4 are hydrogen, lower alkyl, halogen, haloalkyl, alkoxy and similar substituents are disclosed. The compounds are useful in the treatment of M. avium. Methods and compositions utilizing novel as well as known compounds are disclosed.Type: GrantFiled: January 11, 1996Date of Patent: July 1, 1997Assignee: The Research Foundation of State University of NYInventors: Michael Henry Cynamon, John T. Welch
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Patent number: 5230061Abstract: The invention describes a clause counter map inference engine which is an interpreter method based upon the Boolean form, in which Boolean inference is directly assisted by a programmable data structure. The system provides a translation of a series of Boolean logic functions into a compact map representation, which may then be used for Boolean inference by means of an interpreter algorithm or inference engine adapted to update function values based upon any changed input value. The invention provides a rule-based model for logical control systems having an imbeddable, event-chaining inference engine which is independent of the rule-based model. The time to complete a scan cycle of the system depends directly upon the number of inferences in an up-date interval between input and output variable changes, and the lengths of inference chains of events in the logic.Type: GrantFiled: January 2, 1992Date of Patent: July 20, 1993Assignee: The University of AkronInventor: John T. Welch
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Patent number: 4962111Abstract: Pyrazinoic esters have been prepared. Compounds of this group are effective against mycobacteria including Mycobacteria tuberculosis, pyrazinamide-resistant Mycobacteria tuberculosis, Mycobacteria bovis and Mycobacteria kansasii.Type: GrantFiled: June 8, 1989Date of Patent: October 9, 1990Assignee: The Research Foundation of State University of New YorkInventors: John T. Welch, Michael H. Cynamon
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Patent number: 4465506Abstract: N-[Heterocyclicaminocarbonyl]-1H-indene and tetrahydronaphthalene sulfonamides, such as 2,3-dihydro-N-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]-1H-indene-4-sul fonamide, are useful for the regulation of plant growth and as preemergent and postemergent herbicides.Type: GrantFiled: November 10, 1982Date of Patent: August 14, 1984Assignee: E. I. DuPont de Nemours and CompanyInventor: John T. Welch