Patents by Inventor Martin G. Rockwell
Martin G. Rockwell 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: 7665824Abstract: A printing system includes an ink dispenser configured to dispense ink upon a print medium, a condenser configured to condense vapor into a condensate and a receptacle configured to collect the condensate. The receptacle is perforated to permit a portion of the condensate to evaporate.Type: GrantFiled: October 31, 2003Date of Patent: February 23, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: Michel A. Riou, David B. Larson, Martin G. Rockwell, David R. Christmann
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Patent number: 7219974Abstract: In an inkjet printer using ink reservoirs located physically remote from the print heads, tubes are used to deliver ink from the ink reservoirs to the print heads. Air initially present within the tubes can interfere with the proper operation of the print heads and cause print head reliability problems Additionally, air present within the tubes can interfere with the proper flow of ink from the ink reservoirs to the print heads through the tubes. An embodiment of a fluid continuity measurement apparatus includes current sources for each of the tubes. Each of the current sources delivers a substantially constant current to the corresponding tube. Voltage measurement circuits are coupled across each of the tubes. Each of the voltage measurement circuits generates an output corresponding to the voltage across the corresponding tube. The voltages appearing between the ends of the tubes changes as the volume of the air within the tubes changes.Type: GrantFiled: January 24, 2005Date of Patent: May 22, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventors: Justin Roman, Martin G. Rockwell
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Patent number: 6886901Abstract: In an inkjet printer using ink reservoirs located physically remote from the print heads, tubes are used to deliver ink from the ink reservoirs to the print heads. Air initially present within the tubes can interfere with the proper operation of the print heads and cause print head reliability problems Additionally, air present within the tubes can interfere with the proper flow of ink from the ink reservoirs to the print heads through the tubes. An embodiment of a fluid continuity measurement apparatus includes current sources for each of the tubes. Each of the current sources delivers a substantially constant current to the corresponding tube. Voltage measurement circuits are coupled across each of the tubes. Each of the voltage measurement circuits generates an output corresponding to the voltage across the corresponding tube. The voltages appearing between the ends of the tubes changes as the volume of the air within the tubes changes.Type: GrantFiled: October 16, 2002Date of Patent: May 3, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Justin Roman, Martin G. Rockwell
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Patent number: 6685295Abstract: In an inkjet printer using ink reservoirs located physically remote from the print head, tubes are used to deliver ink from the ink reservoirs to the print heads. Air initially present within the tubes can interfere with the proper operation of the print heads and cause print head reliability problems Additionally, air present within the tubes can interfere with the proper flow of ink from the ink reservoirs to the print heads through the tubes. An embodiment of a fluid continuity measurement apparatus includes current sources for each of the tubes. Each of the current sources delivers a substantially constant current to the corresponding tube. Voltage measurement circuits are coupled across each of the tubes. Each of the voltage measurement circuits generates an output corresponding to the voltage across the corresponding tube. The voltages appearing between the ends of the tubes changes as the volume of the air within the tubes changes.Type: GrantFiled: January 30, 2001Date of Patent: February 3, 2004Assignee: Hewlett-Packard Development Company, L.P.Inventors: Justin Roman, Martin G. Rockwell
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Patent number: 6597948Abstract: A defibrillator having infrared communication capability is provided. The wireless communications capability is implemented using infrared light or RF communications and standardized communications protocols such as the IRDA protocol to allow for ready communication between defibrillators such as during handoffs of patient along the Chain of Survival. The wireless communications network also allows for communications between a defibrillator and a host computer such as a palmtop for incident report generation after each handoff. Another embodiment of the present invention provides for a defibrillator having an infrared mode switch to allow for restricted access to advanced cardiac life support (ACLS) features of the defibrillator. A further embodiment of the present invention provides for a defibrillator having a remote training mode that is implemented via wireless communications.Type: GrantFiled: April 7, 2000Date of Patent: July 22, 2003Assignee: Koninklijke Philips Electronics N.V.Inventors: Martin G. Rockwell, Gregory D. Brink, Jonathan N. Andrews, David L. Burton, Patricia A. Arand, Nancy H. Forman, Kenneth S. Rucker, John Kent, Daniel J. Powers
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Publication number: 20030038863Abstract: In an inkjet printer using ink reservoirs located physically remote from the print heads, tubes are used to deliver ink from the ink reservoirs to the print heads. Air initially present within the tubes can interfere with the proper operation of the print heads and cause print head reliability problems Additionally, air present within the tubes can interfere with the proper flow of ink from the ink reservoirs to the print heads through the tubes. An embodiment of a fluid continuity measurement apparatus includes current sources for each of the tubes. Each of the current sources delivers a substantially constant current to the corresponding tube. Voltage measurement circuits are coupled across each of the tubes. Each of the voltage measurement circuits generates an output corresponding to the voltage across the corresponding tube. The voltages appearing between the ends of the tubes changes as the volume of the air within the tubes changes.Type: ApplicationFiled: October 16, 2002Publication date: February 27, 2003Inventors: Justin Roman, Martin G. Rockwell
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Patent number: 6438417Abstract: A defibrillator having infrared communication capability is provided. The wireless communications capability is implemented using infrared light or RF communications and standardized communications protocols such as the IrDA protocol to allow for ready communication between defibrillators such as during handoffs of patient along the Chain of Survival. The wireless communications network also allows for communications between a defibrillator and a host computer such as a palmtop for incident report generation after each handoff. Another embodiment of the present invention provides for a defibrillator having an infrared mode switch to allow for restricted access to advanced cardiac life support (ACLS) features of the defibrillator. A further embodiment of the present invention provides for a defibrillator having a remote training mode that is implemented via wireless communications.Type: GrantFiled: April 7, 2000Date of Patent: August 20, 2002Assignee: Koninklijke PHilips Electronics N.V.Inventors: Martin G. Rockwell, Gregory D. Brink, Jonathan N. Andrews, David L. Burton, Patricia A. Arand, Nancy H. Forman, Kenneth S. Rucker, John Kent, Daniel J. Power
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Publication number: 20020101468Abstract: In an inkjet printer using ink reservoirs located physically remote from the print head, tubes are used to deliver ink from the ink reservoirs to the print heads. Air initially present within the tubes can interfere with the proper operation of the print heads and cause print head reliability problems Additionally, air present with in the tubes can interfere with the proper flow of ink from the ink reservoirs to the print heads through the tubes. An embodiment of a fluid continuity measurement apparatus includes current sources for each of the tubes. Each of the current sources delivers a substantially constant current to the corresponding tube. Voltage measurement circuits are coupled across each of the tubes. Each of the voltage measurement circuits generates an output corresponding to the voltage across the corresponding tube. The voltages appearing between the ends of the tubes changes as the volume of the air within the tubes changes.Type: ApplicationFiled: January 30, 2001Publication date: August 1, 2002Inventors: Justin Roman, Martin G. Rockwell
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Patent number: 6405083Abstract: A defibrillator having infrared communication capability is provided. The wireless communications capability is implemented using infrared light or RF communications and standardized communications protocols such as the IrDA protocol to allow for ready communication between defibrillators such as during handoffs of patient along the Chain of Survival. The wireless communications network also allows for communications between a defibrillator and a host computer such as a palmtop for incident report generation after each handoff. Another embodiment of the present invention provides for a defibrillator having an infrared mode switch to allow for restricted access to advanced cardiac life support (ACLS) features of the defibrillator. A further embodiment of the present invention provides for a defibrillator having a remote training mode that is implemented via wireless communications.Type: GrantFiled: April 7, 2000Date of Patent: June 11, 2002Assignee: Koninklijke Philips Electronics N.V.Inventors: Martin G. Rockwell, Gregory D. Brink, Jonathan N. Andrews, David L. Burton, Patricia A. Arand, Nancy H. Forman, Kenneth S. Rucker, John Kent, Daniel J. Powers
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Patent number: 6381492Abstract: A defibrillator having infrared communication capability is provided. The wireless communications capability is implemented using infrared light or RF communications and standardized communications protocols such as the IrDA protocol to allow for ready communication between defibrillators such as during handoffs of patient along the Chain of Survival. The wireless communications network also allows for communications between a defibrillator and a host computer such as a palmtop for incident report generation after each handoff. Another embodiment of the present invention provides for a defibrillator having an infrared mode switch to allow for restricted access to advanced cardiac life support (ACLS) features of the defibrillator. A further embodiment of the present invention provides for a defibrillator having a remote training mode that is implemented via wireless communications.Type: GrantFiled: April 7, 2000Date of Patent: April 30, 2002Inventors: Martin G. Rockwell, Gregory D. Brink, Jonathan N. Andrews, David L. Burton, Patricia A. Arand, Nancy H. Forman, Kenneth S. Rucker, John Kent, Daniel J. Powers
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Patent number: 6141584Abstract: A defibrillator having infrared communication capability is provided. The wireless communications capability is implemented using infrared light or RF communications and standardized communications protocols such as the IrDA protocol to allow for ready communication between defibrillators such as during handoffs of patient along the Chain of Survival. The wireless communications network also allows for communications between a defibrillator and a host computer such as a palmtop for incident report generation after each handoff. Another embodiment of the present invention provides for a defibrillator having an infrared mode switch to allow for restricted access to advanced cardiac life support (ACLS) features of the defibrillator. A further embodiment of the present invention provides for a defibrillator having a remote training mode that is implemented via wireless communications.Type: GrantFiled: September 30, 1998Date of Patent: October 31, 2000Assignee: Agilent Technologies, Inc.Inventors: Martin G. Rockwell, Gregory D. Brink, Jonathan N. Andrews, David L. Burton, Patricia A. Arand, Nancy H. Forman, Kenneth S. Rucker, John Kent, Daniel J. Powers
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Patent number: 5111813Abstract: Impedance-normalized delivered energy is used as a control parameter in a defibrillation methodolgy and can be selected to yield the highest probability of successful defibrillation while minimizing the risk of damage to the myocardium and nerve system. This control parameter is essentially independent of patient transthoracic impedance and of discharge pulse waveform and duration, thereby making it advantageous as a standard on which a universal defibrillation protocol may be based.Type: GrantFiled: May 18, 1990Date of Patent: May 12, 1992Assignee: Hewlett-Packard CompanyInventors: Francis M. Charbonnier, Martin G. Rockwell
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Patent number: 4840177Abstract: A method and apparatus is disclosed for providing to the body of a patient a defibrillation pulse having a magnitude calculated to induce in that particular patient a desired defibrillation current. The patient's response to a defibrillation pulse is characterized in advance of defibrillation by repeatedly sampling the patient's transthoracic impedance to a small alternating current excitation signal. The sample having the lowest magnitude is taken to represent the patient's true transthoracic impedance. This lowest sampled impedance value is normalized to take into account the shape of the expected waveform and is then multiplied by the desired current to yield the target charge level to which an energy storage device must be charged to induce the desired current to flow in the patient on discharge. Charging of the energy storage device desirably begins before measurement of transthoracic impedance is completed and continues until the target charge is reached.Type: GrantFiled: November 3, 1987Date of Patent: June 20, 1989Assignee: Hewlett-Packard CompanyInventors: Francis M. Charbonnier, Martin G. Rockwell, Carl E. Benvegar
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Patent number: 4372324Abstract: A circuit for detecting and holding the peak voltage of an analog signal is provided. A constant current source controlled by a digital voltage comparator charges a capacitor. The capacitor is charged to a voltage value equivalent to the peak voltage of the analog signal. By selecting the value of the capacitor and the amplitude of the constant current from the current source, slew rate limiting can be achieved, giving the circuit high noise immunity.Type: GrantFiled: August 17, 1981Date of Patent: February 8, 1983Assignee: Hewlett-Packard CompanyInventor: Martin G. Rockwell
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Patent number: D441450Type: GrantFiled: March 31, 1999Date of Patent: May 1, 2001Assignee: Agilent Technologies, Inc.Inventors: Phillip H. Salvatori, Kurt Frederick Olsen, Martin G. Rockwell, Jonathan Neal Andrews, Stephen Vance Cooper
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Patent number: D442692Type: GrantFiled: October 13, 2000Date of Patent: May 22, 2001Assignee: Agilent Technologies, Inc.Inventors: Phillip H. Salvatori, Kurt Frederick Olsen, Martin G. Rockwell, Jonathan Neal Andrews, Stephen Vance Cooper