Patents by Inventor Justin Roman
Justin Roman 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: 8506659Abstract: A hydrogen generating apparatus includes a chemical reaction chamber, a chemical solution reservoir, and an unpowered pressure producing member for moving a chemical solution from the chemical solution reservoir to the chemical reaction chamber.Type: GrantFiled: May 26, 2006Date of Patent: August 13, 2013Assignee: Eveready Battery Co., Inc.Inventors: Jason S. Ord, Justin Roman, Alan Shibata
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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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Publication number: 20060238561Abstract: Various embodiments of a printing system including a vacuum duct are disclosed.Type: ApplicationFiled: April 26, 2005Publication date: October 26, 2006Inventors: Anthony Carcia, Alan Shibata, Rick Tanaka, Justin Roman, Tanya Schneider, Charles Singleton, Shayler Backlund, Ernesto Garay, Angela Krauskopf
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Publication number: 20060222911Abstract: A hydrogen generating apparatus includes a chemical reaction chamber, a chemical solution reservoir, and an unpowered pressure producing member for moving a chemical solution from the chemical solution reservoir to the chemical reaction chamber.Type: ApplicationFiled: May 26, 2006Publication date: October 5, 2006Inventors: Jason Ord, Justin Roman, Alan Shibata
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Publication number: 20060221123Abstract: In one implementation, an apparatus includes a device slideably engaged with a chassis to move the chassis in two directions that are substantially orthogonal.Type: ApplicationFiled: April 4, 2005Publication date: October 5, 2006Inventors: Anthony Carcia, Alan Shibata, Justin Roman
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Patent number: 7097813Abstract: A hydrogen generating apparatus includes a chemical reaction chamber, a chemical solution reservoir, and an unpowered pressure producing member for moving a chemical solution from the chemical solution reservoir to the chemical reaction chamber.Type: GrantFiled: June 21, 2002Date of Patent: August 29, 2006Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jason S. Ord, Justin Roman, Alan Shibata
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Publication number: 20050134628Abstract: 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: January 25, 2005Publication date: June 23, 2005Inventors: Justin Roman, Martin 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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Publication number: 20050030353Abstract: An ink supply station for use with a first ink supply and a second ink supply includes a first module and a second module releasably coupled to the first module. The first module includes a first chassis and a first movable member supported by the chassis, wherein movement of the member causes flow of ink from the first ink supply. The second module includes a second chassis and a second movable member supported by the second chassis. Movement of the second member causes flow of ink from the second ink supply.Type: ApplicationFiled: August 7, 2003Publication date: February 10, 2005Inventors: Jason Ord, Alan Shibata, Justin Roman, Timothy Longust, Lap Nguyen, Laurie Ramos, David Whalen, Robert Battey
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Publication number: 20040048116Abstract: A hydrogen generating apparatus includes a chemical container, a tubular member disposed at least partially in the chemical container, the tubular member having an inlet and an outlet, and a catalyst disposed within the tubular member.Type: ApplicationFiled: September 6, 2002Publication date: March 11, 2004Inventors: Jason S. Ord, Timothy A. Longust, Justin Roman, Alan Shibata
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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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Publication number: 20030235724Abstract: A hydrogen generating apparatus includes a chemical reaction chamber, a chemical solution reservoir, and an unpowered pressure producing member for moving a chemical solution from the chemical solution reservoir to the chemical reaction chamber.Type: ApplicationFiled: June 21, 2002Publication date: December 25, 2003Inventors: Jason S. Ord, Justin Roman, Alan Shibata
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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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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: 4033523Abstract: A film cartridge for use with cinematographic apparatus or the like comprises a reel adapted to have flexible strip material wound thereon, a cover adapted to receive the reel in a nested position, and a releasable latch effective to retain the reel in the nested position until the cartridge is received by the cinematographic apparatus or the like. At that time, the latch is released by a portion of the apparatus.Type: GrantFiled: December 11, 1975Date of Patent: July 5, 1977Assignee: Eastman Kodak CompanyInventor: Robert Justin Roman