Patents by Inventor William Chan
William Chan 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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Patent number: 8803044Abstract: A dialysis fluid heating system includes a plurality of conductive tubes; first and second end caps located at first and second ends of the tubes, respectively, the first end cap including a dialysis fluid inlet and a dialysis fluid outlet, the end caps and the tubes configured such that dialysis fluid can flow from the fluid inlet of the first end cap, through at least one first tube to the second end cap, and through at least one second tube back to the first end cap; a conductive wire wound around an outside of the conductive tubes; and electronics configured to supply power to the conductive wire, the wire forming a primary coil of a transformer, the tubes forming a secondary coil of the transformer.Type: GrantFiled: July 5, 2007Date of Patent: August 12, 2014Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Richard E. Kienman, Dan Roush, John E. Steck, James S. Slepicka, Atif M. Yardimci, Gideon Hecht, Jennifer S. Lindsay, George F. Bobart, Donald D. Busby, William Chan, Yuanpang S. Ding, Amy L. Twining, Douglas W. Reitz, Andrey Kopychev, Mehmet B. Ozer, Brian C. Lauman
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Patent number: 8762490Abstract: Methods and systems for reducing web page load time include obtaining speculative information associated with a uniform resource locator (URL). The method and system also include determining whether to prefetch content of the URL based on the speculative information. The method and system further include providing an instruction to prefetch the URL content when a determination to prefetch results. The method and system also include prerendering the URL content when the instruction to prefetch the URL content is provided.Type: GrantFiled: November 19, 2012Date of Patent: June 24, 2014Assignee: Google Inc.Inventors: James Roskind, Michael Belshe, William Chan
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Publication number: 20140123135Abstract: A cloud system may create and support multiple network offerings for virtual machines in a cloud zone. Physical networks comprising sets of network elements, such as routers, gateways, firewalls, load balancers, and other network hardware, may be created and updated within a zone. Network offerings may be defined and associated, using tags or other techniques, with virtual machine networks, physical networks and/or network elements. Cloud end users may request specific network offerings when creating virtual machines, or may request to move existing virtual machines from one network offering to another. The cloud system may use the requested network offering to identify the virtual machine network, physical network, and/or network elements corresponding to the requested network offering. The cloud system may allocate a new virtual machine network and configure the network elements within the associated physical network to provide network services to the virtual machine.Type: ApplicationFiled: October 28, 2012Publication date: May 1, 2014Applicant: Citrix Systems, Inc.Inventors: Alex Huang, William Chan, Chiradeep Vittal
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Publication number: 20130291068Abstract: Methods and systems for managing cloud zones are described herein. A management server for a cloud of computing resources may add private zones to the cloud. The private zones may contain computers owned and operated by a user of the cloud, such as a cloud customer, rather than the cloud operator. The management server may manage the computing resources in the private zone by sending commands to an agent, which in turn relays the management server's commands to the individual computing resources. The agent may be authenticated using a token.Type: ApplicationFiled: April 30, 2012Publication date: October 31, 2013Applicant: CITRIX SYSTEMS, INCInventors: Alex Huang, Chiradeep Vittal, William Chan
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Publication number: 20130232252Abstract: Methods and systems for management of cloud computing resources are described herein. A management server for a cloud of physical computing resources may assign states to individual physical computing resources or groups of physical computing resources. The states may include a disabled state, in which only administrator access to the resources is permitted; an enabled state, in which user access to the resources is permitted; a restricted state, in which some, but not all user requests to the resources are permitted; and an unmanaged state, in which no communications between the resources and the management server are permitted.Type: ApplicationFiled: March 1, 2012Publication date: September 5, 2013Applicant: CITRIX SYSTEMS, INCInventors: Alex Huang, Chiradeep Vittal, William Chan
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Publication number: 20130212576Abstract: A cloud system may create physical resource tags to store relationships between cloud computing offerings, such as computing service offerings, storage offerings, and network offerings, and the specific physical resources in the cloud computing environment. Cloud computing offerings may be presented to cloud customers, the offerings corresponding to various combinations of computing services, storage, networking, and other hardware or software resources. After a customer selects one or more cloud computing offerings, a cloud resource manager or other component within the cloud infrastructure may retrieve a set of tags and determine a set of physical hardware resources associated with the selected offerings. The physical hardware resources associated with the selected offerings may be subsequently used to provision and create the new virtual machine and its operating environment.Type: ApplicationFiled: February 9, 2012Publication date: August 15, 2013Applicant: CITRIX SYSTEMS, INCInventors: Alex Huang, Chiradeep Vittal, William Chan
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Publication number: 20130138967Abstract: Systems and methods for generating authentic digital memorabilia are described. A signor may be provided a digital photograph. The signor's signature, written message, or voice message may be received. Biometric authentication or verification may be performed on the signor's handwriting or voice sample through comparison with stored samples. If the verification signifies a high likelihood signor's handwriting or voice sample is authentic, creation of digital memorabilia is performed by embedding signor's signature or written message in a digital photograph and linking the signor's voice message with the photograph. The digital memorabilia is accompanied by a certificate of authenticity and distributed to a customer or displayed on a website.Type: ApplicationFiled: November 21, 2012Publication date: May 30, 2013Inventors: David Auld, Erem Boto, William Chan, Eric Feeny, Andrew Smith
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Patent number: 8366667Abstract: A medical fluid infusion system including: a fluid pathway for transporting a pulsatile flow of fluid; a dampening element in communication with the fluid pathway, the dampening element configured to actively dampen pressure fluctuations of the pulsatile flow to smoothen the pulsatile fluid flow, the dampening element operable in any orientation; and a fluid flow sensor disposed along the fluid pathway downstream of the dampening element to measure the flow rate of the smoothened fluid flow.Type: GrantFiled: February 11, 2010Date of Patent: February 5, 2013Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: William Chan, Ramiro Castellanos, Reema A. Bhagtani, Georgios A. Bertos, Rongsheng Lin, Richard Boyer, Jorge DelCastillo, Gary Schultz
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Patent number: 8341245Abstract: Methods and systems for reducing web page load time include obtaining speculative information associated with a uniform resource locator (URL). The method and system also include determining whether to prefetch content of the URL based on the speculative information. The method and system further include providing an instruction to prefetch the URL content when a determination to prefetch results.Type: GrantFiled: September 26, 2011Date of Patent: December 25, 2012Assignee: Google Inc.Inventors: James Roskind, Michael Belshe, William Chan
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Patent number: 8287724Abstract: A dialysis system instrument includes a dialysis instrument, a disposable pumping and valving cassette apparatus operable with pumping and valving actuators of the dialysis instrument, the disposable cassette including an electronic cell and electronics associated with the electronic cell, the electronics configured to determine an electrical property of a solution flowing through the electronic cell of the disposable apparatus.Type: GrantFiled: July 5, 2007Date of Patent: October 16, 2012Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: James S. Slepicka, Mark Perry, William Chan, Richard Kienman, Angel M. Lasso, Donald Busby, Rodolfo G. Roger, Michael E. Hogard
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Patent number: 8263927Abstract: An integrated circuit transimpedance amplifier arrangement constituted of: a plurality of internal matched resistors; a current multiplier arranged to output a signal whose value is a function of an input current signal, an external resistor and a first set of the plurality of internal matched resistors; and an output transimpedance amplifier coupled to the output of the current multiplier, the output transimpedance amplifier exhibiting a gain whose value is a function of a second set of the plurality of internal matched resistors, wherein the output of the output transimpedance amplifier is a function of the input current signal, the external resistor, the first set of the plurality of internal matched resistors and the second set of the plurality of internal matched resistors, wherein the variations with temperature of the first set of the plurality of internal matched resistors and the second set of the plurality of internal matched resistors cancel.Type: GrantFiled: August 24, 2010Date of Patent: September 11, 2012Assignee: Microsemi CorporationInventors: William Chan, Peter Kim
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Publication number: 20110196303Abstract: A medical fluid infusion system including: a fluid pathway for transporting a pulsatile flow of fluid; a dampening element in communication with the fluid pathway, the dampening element configured to actively dampen pressure fluctuations of the pulsatile flow to smoothen the pulsatile fluid flow, the dampening element operable in any orientation; and a fluid flow sensor disposed along the fluid pathway downstream of the dampening element to measure the flow rate of the smoothened fluid flow.Type: ApplicationFiled: February 11, 2010Publication date: August 11, 2011Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventors: William Chan, Ramiro Castellanos, Reema A. Bhagtani, Georgios A. Bertos, Rongsheng Lin, Richard Boyer, Jorge DelCastillo, Gary Schultz
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Publication number: 20110062311Abstract: An integrated circuit transimpedance amplifier arrangement constituted of: a plurality of internal matched resistors; a current multiplier arranged to output a signal whose value is a function of an input current signal, an external resistor and a first set of the plurality of internal matched resistors; and an output transimpedance amplifier coupled to the output of the current multiplier, the output transimpedance amplifier exhibiting a gain whose value is a function of a second set of the plurality of internal matched resistors, wherein the output of the output transimpedance amplifier is a function of the input current signal, the external resistor, the first set of the plurality of internal matched resistors and the second set of the plurality of internal matched resistors, wherein the variations with temperature of the first set of the plurality of internal matched resistors and the second set of the plurality of internal matched resistors cancel.Type: ApplicationFiled: August 24, 2010Publication date: March 17, 2011Applicant: MICROSEMI CORPORATIONInventors: William CHAN, Peter KIM
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Publication number: 20090012452Abstract: A dialysis system instrument includes a dialysis instrument, a disposable pumping and valving cassette apparatus operable with pumping and valving actuators of the dialysis instrument, the disposable cassette including an electronic cell and electronics associated with the electronic cell, the electronics configured to determine an electrical property of a solution flowing through the electronic cell of the disposable apparatus.Type: ApplicationFiled: July 5, 2007Publication date: January 8, 2009Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventors: James S. Slepicka, Mark Perry, William Chan, Richard Kienman, Angel M. Lasso, Donald Busby, Rodolfo G. Roger, Michael E. Hogard
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Publication number: 20090007642Abstract: A dialysate testing method in one embodiment includes placing electrical contacts in a dialysate flow path, measuring an electrical property of the dialysate as it flows through the flow path and past the contacts, and determining whether the dialysate has been mixed properly from the detected electrical property. A dialysate testing method in another embodiment includes flowing dialysate past a pair of electrical contacts, calculating a conductivity of the dialysate using an algorithm that takes into account a geometry of the contacts, and using the calculated conductivity to determine if the dialysate has been removed properly.Type: ApplicationFiled: July 5, 2007Publication date: January 8, 2009Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventors: Donald Busby, Rodolfo G. Roger, Michael E. Hogard, James S. Slepicka, Mark Perry, William Chan, Richard Kienman, Angel M. Lasso
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Publication number: 20080021377Abstract: A dialysis fluid heating system includes a plurality of conductive tubes; first and second end caps located at first and second ends of the tubes, respectively, the first end cap including a dialysis fluid inlet and a dialysis fluid outlet, the end caps and the tubes configured such that dialysis fluid can flow from the fluid inlet of the first end cap, through at least one first tube to the second end cap, and through at least one second tube back to the first end cap; a conductive wire wound around an outside of the conductive tubes; and electronics configured to supply power to the conductive wire, the wire forming a primary coil of a transformer, the tubes forming a secondary coil of the transformer.Type: ApplicationFiled: July 5, 2007Publication date: January 24, 2008Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventors: Richard Kienman, Dan Roush, John Steck, James Slepicka, Atif Yardimci, Gideon Hecht, Jennifer Lindsay, George Bobart, Donald Busby, William Chan, Yuanpang Ding, Amy Twining, Douglas Reitz, Andrey Kopychev, Mehmet Ozer, Brian Lauman
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Patent number: 7299033Abstract: A network server system includes a download manager that manages the publication, purchase and delivery of digital content from multiple content suppliers to wireless services subscribers in multiple domains. Each domain is defined as a different grouping of subscribers, such as a wireless carrier or subsidiary thereof, a business enterprise, or other defined group of subscribers. The download manager maintains data defining the multiple domains and associations between the domains and wireless services subscribers. Digital content suppliers can publish and manage their products on the server system via a computer network and make their products available to the subscribers for purchase or licensing. The subscribers in each of the domains can access the server remotely to purchase rights to download and use the digital content on associated wireless communication devices.Type: GrantFiled: June 19, 2003Date of Patent: November 20, 2007Assignee: Openwave Systems Inc.Inventors: Rikard M. Kjellberg, Sheng Liang, Tomas G. Lund, William Chan
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Publication number: 20070208682Abstract: Expert System supported interactive product selection and recommendation. The invention assists an agent to interact with a customer and to provide selection and recommendation of available products and/or services that offer a workable solution for the customer. The invention allows for the use of agents of varying skill levels, including relatively low skill level, without suffering deleterious performance. From certain perspectives, an expert system employed using various aspects of the invention allows the agent to provide real time interaction with a customer and to provide a real time recommended solution to that customer. Many traditional approaches dealing in complex industries require that agent's have a high degree of skill and expertise. The invention allows even a novice agent to service a customer's needs without requiring a high skill level or up-front training that is often at the expense of the provider seeking to market its products and/or services.Type: ApplicationFiled: May 10, 2007Publication date: September 6, 2007Applicant: Convergys CMG Utah, Inc.Inventors: Rod Mancisidor, Charles Erickson, Ahmed Gheith, William Chan
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Device capability based discovery, packaging and provisioning of content for wireless mobile devices
Patent number: 7233790Abstract: A network server system includes a download manager that manages the publication, purchase and delivery of digital products from multiple suppliers to wireless services subscribers in multiple domains. Product suppliers can publish and manage their products on the server system via a computer network and make their products available to the subscribers for purchase or licensing. The subscribers in each domain can access the server remotely to purchase rights to download and use the products on associated wireless communication devices. Multiple different implementations of any product can be maintained, where each implementation corresponds to a different set of device capabilities. Each product can also be associated with multiple different provisioning models, each corresponding to a different set of device capabilities.Type: GrantFiled: June 19, 2003Date of Patent: June 19, 2007Assignee: Openwave Systems, Inc.Inventors: Rikard M. Kjellberg, Sheng Liang, Tomas G. Lund, William Chan, Ramakrishna Chinta, Xinbi Chen -
Patent number: RE43113Abstract: A network server system includes a download manager that manages the publication, purchase and delivery of digital content from multiple content suppliers to wireless services subscribers in multiple domains. Each domain is defined as a different grouping of subscribers, such as a wireless carrier or subsidiary thereof, a business enterprise, or other defined group of subscribers. The download manager maintains data defining the multiple domains and associations between the domains and wireless services subscribers. Digital content suppliers can publish and manage their products on the server system via a computer network and make their products available to the subscribers for purchase or licensing. The subscribers in each of the domains can access the server remotely to purchase rights to download and use the digital content on associated wireless communication devices.Type: GrantFiled: November 19, 2009Date of Patent: January 17, 2012Assignee: Openwave Systems Inc.Inventors: Rikard M. Kjellberg, Sheng Liang, Tomas G. Lund, William Chan