Abstract: In one aspect, a wireless device sends a synchronization group identifier to a network control apparatus identifying a synchronization group of wireless devices. If the wireless device is notified that no other devices of the synchronization group are connected to the control apparatus, the wireless device transmits a timing reference to and agrees an extended discontinuous reception time period with the control apparatus. Otherwise, the wireless device receives a timing reference and an extended discontinuous reception time period from the control apparatus. The wireless device periodically enters an idle state and powers up for reception in accordance with at least the timing reference and the extended discontinuous reception time period. In another aspect, plural base stations each use a common timing reference and a common extended discontinuous reception time period in controlling the operation of extended discontinuous reception by a synchronization group of wireless devices.
Type:
Grant
Filed:
March 22, 2012
Date of Patent:
May 7, 2013
Assignee:
Renesas Mobil Corporation
Inventors:
Matti Kullervo Jokimies, Gilles Charbit
Abstract: Permselective separation of aromatic hydrocarbons from non-aromatic hydrocarbons in a feed stream is accomplished using improved asymmetric membranes. The preferred membranes are fashioned from a polyimide and conditioned with a lubricating oil. Feed streams containing a mixture of aromatic and non-aromatic hydrocarbons are contacted with the dense active layer side of the polyimide membrane under a pressure and temperature sufficient to selectively permeate the desired aromatic hydrocarbon.
Type:
Grant
Filed:
July 30, 1998
Date of Patent:
February 13, 2001
Assignee:
Exxon Mobil Corporation
Inventors:
Arthur A. Chin, Bryan M. Knickerbocker, Jeffrey C. Trewella, Terry R. Waldron, Lloyd S. White
Abstract: A catalyst composition is described for preparing a high activity catalyst in silica which produces, in a single reactor, polyethylene with a broad or bimodal molecular weight distribution. The catalyst is prepared from the interaction of silica, previously calcined at 600.degree. C., with dibutylmagnesium, 1-butanol and titanium tetrachloride and a solution of methylalumoxane and ethylenebis[1-indenyl]zirconium dichloride.
Type:
Grant
Filed:
July 14, 1997
Date of Patent:
April 18, 2000
Assignee:
Mobil Corporation
Inventors:
Frederick Yip-Kwai Lo, Robert I. Mink, Thomas Edward Nowlin, Sandra Denise Schregenberger, Pradeep Pandurang Shirodkar
Abstract: This invention relates to a new synthetic porous crystalline material, designated MCM-68, a method and novel polycyclic organic cation for its preparation and its use in catalytic conversion of organic compounds. The new crystalline material exhibits a distinctive X-ray diffraction pattern and has a unique crystal structure which contains at least one channel system, in which each channel is defined by a 12-membered ring of tetrahedrally coordinated atoms, and at least two further, independent channel systems, in each of which each channel is defined by a 10-membered ring of tetrahedrally coordinated atoms, wherein the number of unique 10-membered ring channels is twice the number of 12-membered ring channels.
Type:
Grant
Filed:
January 21, 1999
Date of Patent:
April 11, 2000
Assignee:
Mobil Corporation
Inventors:
David C. Calabro, Jane C. Cheng, Robert A. Crane, Jr., Charles T. Kresge, Sandeep S. Dhingra, Michael A. Steckel, David L. Stern, Simon C. Weston
Abstract: A cyrogenic technique for recovering ethene from a gaseous mixture containing methane, ethane, etc. Operating methods and apparatus are provided for passing the gas feed through a chilling train having a series of dephlegmator-type exchange units to condense liquid rich in ethene and ethane, while separating a major portion of methane and lighter gas. A multizone demethanizer removes condensed methane from the C.sub.2 fraction to provide a pure product economically.
Type:
Grant
Filed:
April 5, 1989
Date of Patent:
February 13, 1990
Assignee:
Mobil Corporation
Inventors:
Richard H. McCue, Jr., John L. Pickering, Jr.