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The U.S. Patent and Trademark Office issued the following patents to Chicago-area companies between Dec. 28 and Jan. 3:

6,834,467–Free-form ceiling, USG Interiors Inc., Chicago

6,834,474–Package with zipper closure, Kraft Foods Holdings Inc., Northfield

6,834,494–Design and assembly of a catalyst-bed gas generator for the catalytic decomposition of high-concentration hydrogen peroxide propellants and the catalytic combustion of hydrocarbon/air mixtures, Boeing Co., Chicago

6,834,520–Dead-bolt lock assembly for flight-deck door of an aircraft, Boeing Co., Chicago

6,834,525–Adjustable corrugation apparatus and method, Boeing Co., Chicago

6,834,529–Method for measuring the atmosphere within an enclosure using a self-drilling sensor well, Siemens Building Technologies Inc., Buffalo Grove

6,834,559–Vibration-compensation system for tire-testing systems, Illinois Tool Works Inc., Glenview

6,834,637–Adapter for an idle air control valve, Brunswick Corp., Lake Forest

6,834,751–Cone clutch with improved oil evacuation structure, Brunswick Corp., Lake Forest

6,834,788–Magazine assembly with stabilizing members, Illinois Tool Works Inc., Glenview

6,834,831–Hybrid solid-oxide fuel-cell aircraft auxiliary-power unit, Boeing Co., Chicago

6,834,833–Twin-aisle small airplane, Boeing Co., Chicago

6,834,979–Illumination device for simulating neon lighting with reflector, iLight Technologies Inc., Evanston

6,834,988–Enhanced thermal indicator light system and method for the use thereof, General Binding Corp., Skokie

6,835,036–Concrete anchor, Illinois Tool Works Inc., Glenview

6,835,068–Apparatus for aircraft seat-connector interface to portable electronic devices, Boeing Co., Chicago

6,835,104–Field convertible tap-off unit, Square D Co., Palatine

6,835,186–Mechanical breakup unit for biochemically reactive fluid delivery device, Baxter International Inc., Deerfield

6,835,210–Electrochemical method and system for dyeing hair, Unilever Home & Personal Care USA, a division of Conopco Inc., Chicago

6,835,302–FCC process and apparatus with automatic catalyst recycle control, UOP LLC, Des Plaines

6,835,304–Device for monitoring of a coolant regeneration system, The Penray Cos. Inc., Wheeling, and Parker Hannifin Corp., Modesto, Calif.

6,835,354–Integrated reactor, Hyradix Inc., Des Plaines

6,835,396–Preparation of submicron-sized nanoparticles via dispersion lyophilization, Baxter International Inc., Deerfield

6,835,404–Manufacture of non-standard cheese products, Kraft Foods Holdings Inc., Northfield

6,835,491–Battery having a built-in controller, The Board of Trustees of the University of Illinois, Chicago

6,835,862–Alkylation process operating at high recycle ratios, UOP LLC, Des Plaines

6,835,948–Holographic or optically variable printing material and method for customized printing, Illinois Tool Works Inc., Glenview

6,836,210–Adverse condition detector having modulated test signal, Maple Chase Co., Downers Grove

6,836,212–Method and apparatus for reducing the likelihood of losing a portable electronic device, Motorola Inc., Schaumburg

6,836,249–Reconfigurable antenna for multiband operation, Motorola Inc., Schaumburg

6,836,274–Three-dimensional light electronic programming guide, Eagle New Media Investments LLC, Chicago

6,836,504–Method and apparatus for spreading symbols in a communication system, Motorola Inc., Schaumburg

6,836,510–DSL link with scaleable performance, PCTEL Inc., Chicago

6,836,514–Method for the detection and recovery of errors in the frame overhead of digital video decoding systems, Motorola Inc., Schaumburg

6,836,520–Method and apparatus for establishing synchronization with a synchronization signal, Motorola Inc., Schaumburg

6,836,547–Protecting an echo canceler against random transitions in echo paths, Motorola Inc., Schaumburg

6,836,558–Method, system and computer readable medium for identifying chest radiographs using image mapping and template matching techniques, Arch Development Corp., Chicago

6,836,663–Wireless communications device with network cache function, Motorola Inc., Schaumburg

6,836,664–System and method of achieving dynamic channel bandwidth, Motorola Inc., Schaumburg

6,836,676–Speakerphone accessory, Motorola Inc., Schaumburg

6,836,724–Navigation system with sign assistance, Navteq North America LLC, Chicago

6,836,774–Hierarchical caching techniques for efficient dynamic page generation, Divine Technology Ventures, Chicago

6,836,781–Method for streamlined representation of roads in a geographic database, Navteq North America LLC, Chicago

6,836,803–Operations architecture to implement a local service activation management system, Accenture LLP, Chicago

PP15,459–Nemesia plant named “Balarcomwhit,” Ball Horticultural Co., West Chicago