Patents by Inventor David C. Hunter
David C. Hunter 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: 8045603Abstract: A transceiver and method for communicating over a communications channel having a plurality of subchannels are described. In particular, the transceiver is capable of dynamically switching between communicating data for a first active application set and communicating data for a second different active application set. An active application set is defined as the set of one or more active applications for which the transceiver is currently communicating data. As part of communicating data for the first active application set, the transceiver allocates the subchannels to the one or more applications in the first application set. The transmission requirements of the first active application set defines a first communication state of the transceiver. When the transceiver dynamically transitions to communicating data for the second different application set, the transceiver reallocates the subchannels to the one or more applications in the second different application set.Type: GrantFiled: August 18, 2010Date of Patent: October 25, 2011Assignee: Daphimo Co. B.V., LLCInventors: Marcos C. Tzannes, Michael A. Tzannes, David C. Hunter, Richard W. Gross, Halil Padir
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Publication number: 20100309967Abstract: A transceiver and method for communicating over a communications channel having a plurality of subchannels are described. In particular, the transceiver is capable of dynamically switching between communicating data for a first active application set and communicating data for a second different active application set. An active application set is defined as the set of one or more active applications for which the transceiver is currently communicating data. As part of communicating data for the first active application set, the transceiver allocates the subchannels to the one or more applications in the first application set. The transmission requirements of the first active application set defines a first communication state of the transceiver. When the transceiver dynamically transitions to communicating data for the second different application set, the transceiver reallocates the subchannels to the one or more applications in the second different application set.Type: ApplicationFiled: August 18, 2010Publication date: December 9, 2010Inventors: Marcos C. Tzannes, Michael A. Tzannes, David C. Hunter, Richard W. Gross, Halil Padir
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Patent number: 7813418Abstract: A transceiver and method for communicating over a communications channel having a plurality of subchannels are described. In particular, the transceiver is capable of dynamically switching between communicating data for a first active application set and communicating data for a second different active application set. An active application set is defined as the set of one or more active applications for which the transceiver is currently communicating data. As part of communicating data for the first active application set, the transceiver allocates the subchannels to the one or more applications in the first application set. The transmission requirements of the first active application set defines a first communication state of the transceiver. When the transceiver dynamically transitions to communicating data for the second different application set, the transceiver reallocates the subchannels to the one or more applications in the second different application set.Type: GrantFiled: January 11, 2008Date of Patent: October 12, 2010Inventors: Marcos C. Tzannes, Michael A. Tzannes, David C. Hunter, Richard W. Gross, Halil Padir
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Publication number: 20080159366Abstract: A transceiver and method for communicating over a communications channel having a plurality of subchannels are described. In particular, the transceiver is capable of dynamically switching between communicating data for a first active application set and communicating data for a second different active application set. An active application set is defined as the set of one or more active applications for which the transceiver is currently communicating data. As part of communicating data for the first active application set, the transceiver allocates the subchannels to the one or more applications in the first application set. The transmission requirements of the first active application set defines a first communication state of the transceiver. When the transceiver dynamically transitions to communicating data for the second different application set, the transceiver reallocates the subchannels to the one or more applications in the second different application set.Type: ApplicationFiled: January 11, 2008Publication date: July 3, 2008Applicant: AWARE, INC.Inventors: Marcos C. Tzannes, Michael A. Tzannes, David C. Hunter, Richard W. Gross, Halil Padir
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Publication number: 20040223510Abstract: A transceiver and method for communicating over a communications channel having a plurality of subchannels are described. In particular, the transceiver is capable of dynamically switching between communicating data for a first active application set and communicating data for a second different active application set. An active application set is defined as the set of one or more active applications for which the transceiver is currently communicating data. As part of communicating data for the first active application set, the transceiver allocates the subchannels to the one or more applications in the first application set. The transmission requirements of the first active application set defines a first communication state of the transceiver. When the transceiver dynamically transitions to communicating data for the second different application set, the transceiver reallocates the subchannels to the one or more applications in the second different application set.Type: ApplicationFiled: June 9, 2004Publication date: November 11, 2004Applicant: Aware, Inc.Inventors: Marcos C. Tzannes, Michael A. Tzannes, David C. Hunter, Richard W. Gross, Halil Padir
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Patent number: 6775320Abstract: A transceiver and method for communicating over a communications channel having a plurality of subchannels are described. In particular, the transceiver is capable of dynamically switching between communicating data for a first active application set and communicating data for a second different active application set. An active application set is defined as the set of one or more active applications for which the transceiver is currently communicating data. As part of communicating data for the first active application set, the transceiver allocates the subchannels to the one or more applications in the first application set. The transmission requirements of the first active application set defines a first communication state of the transceiver. When the transceiver dynamically transitions to communicating data for the second different application set, the transceiver reallocates the subchannels to the one or more applications in the second different application set.Type: GrantFiled: September 15, 2000Date of Patent: August 10, 2004Assignee: Aware, Inc.Inventors: Marcos C. Tzannes, Michael A. Tzannes, David C. Hunter, Richard W. Gross, Halil Padir
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Patent number: 5231072Abstract: Compounds of the formula ##STR1## in which A is nitrogen or CR.sup.5 ;R.sup.1, R.sup.2 and R.sup.5 each independently are hydrogen, or halogen, formyl, cyano, carboxy or azido, or optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, alkoxy, alkenyloxy, alkynyloxy, aryloxy, alkylthio, alkenylthio, alkynylthio, arylthio, alkylcarbonyl, alkoxycarbonyl, amino, aminoxy or dialkyliminoxy;R.sup.3 is a hydrogen, or optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclic, aralkyl or aryl; andR.sup.4 optionally substituted alkyl, aralkyl, aryl or heterocyclyl; and salts thereof, have herbicidal properties. The invention also provides processes for their preparation and their use as herbicides.Type: GrantFiled: September 14, 1992Date of Patent: July 27, 1993Assignee: Shell Research LimitedInventors: David P. Astles, Andrew Flood, Trevor W. Newton, David C. Hunter
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Patent number: 5158599Abstract: Compounds of the formula ##STR1## in which A is nitrogen or CR.sup.5 ;R.sup.1, R.sup.2 and R.sup.5 each independently are hydrogen, or halogen, formyl, cyano, carboxy or azido, or optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, alkoxy, alkenyloxy, alkynyloxy, aryloxy, alkylthio, alkenylthio, alkynylthio, arylthio, alkylcarbonyl, alkoxycarbonyl, amino, aminoxy or dialkyliminoxy;R.sup.3 is a hydrogen, or optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclic, aralkyl or aryl; andR.sub.4 optionally substituted alkyl, aralkyl, aryl or heterocyclyl; and salts thereof, have herbicidal properties. The invention also provides processes for their preparation and their use as herbicides.Type: GrantFiled: July 26, 1990Date of Patent: October 27, 1992Assignee: Shell Research LimitedInventors: David P. Astles, Andrew Flood, Trevor W. Newton, David C. Hunter
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Patent number: 5139563Abstract: Compounds of formula I ##STR1## wherein A is nitrogen or a group CR.sup.5 ;each of R.sup.1, R.sup.2 and R.sup.5 is, independently, hydrogen, halogen, formyl, cyano, carboxy, azido or optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, alkoxy, alkenyloxy, alkynyloxy, aryloxy, alkylthio, alkenylthio, alkynylthio, arylthio, alkylcarbonyl, alkoxycarbonyl, amino, aminoxy or dialkyliminoxy; andR is ##STR2## in which R.sup.3 is hydrogen, optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclic or aryl, or COR.sup.8, R.sup.8 being hydroxy, alkoxy, carboxy, alkoxycarbonyl, amino or mono- or di- alkylamino; andR.sup.4 is a group COR.sup.6 wherein R.sup.6 is hydrogen, halogen, hydroxy, or optionally substituted alkoxy, alkenyloxy, alkynyloxy, cycloalkoxy, aryloxy, alkylthio, alkenylthio, alkynylthio, arylthio, aminoxy, dialkyliminoxy or amino, or R.sup.6 is a group OR.sup.7 in which R.sup.7 is an optionally substituted heterocyclic ring; or ##STR3## each of R.sup.9 and R.sup.Type: GrantFiled: May 30, 1990Date of Patent: August 18, 1992Assignee: Shell Research LimitedInventors: David P. Astles, Andrew Flood, Alastair McArthur, Trevor W. Newton, John E. Spencer, David C. Hunter