E.i. Dupont De Nemours and Company

Mitsubishi Electric Research Laboratories, Inc.

Lu Zhang

Philip Orlik

Jinyun Zhang

Hyun Sung Lim

Pankaj Arora

Raymond Yim

Simon Frisk

Cheng-Hang Chi

Charles David Musick

David Charles Jones

Stephan Claude De La Veaux

Austin Henry Reid, Jr

A method for filtering particles from water mist laden air involves passing the air through a medium that has a nanoweb layer in fluid contact with a hydrophobic nonwoven web. The hydrophobic web can be made of an intrinsically hydrophobic material, or can be coated with a hydrophobic coating. The medium does not undergo the large pressure drops normally associated with filtration of water mists and retains its efficiency well.

Air filtration medium with improved dust loading capacity and improved resistance to high humidity environment

An encoder in a transmitter uses space-time trellis coding. An input bitstream is multiplexed to produce in parallel a set of output bitstreams. A multiplier applies a code generating weight to each output bitstream, which are combined, mapped and transmitted by a single antenna.

STTC encoder for single antenna WAVE transceivers

A filtration medium is disclosed for use in air filters used in heating, ventilating and air conditioning systems. The medium contains at least one nanofiber layer of fibers having diameters less than 1 &#x3bc;m and at least one upstream layer, the medium having sufficient holding capacity for dust particles that efficiency loss and pressure loss across the medium are minimized during use.

A transmitter encodes an input bitstream using space-time trellis coding (STTC). The encoder includes a serial to parallel convertor to produce a first and second output bitstreams. First and second three bit shift registers are connected to produce first and second output bitstreams. A multiplier applies a code generating weight to each bit of the shift registers to encode the bitstreams. A first switch is connected between a last bit of the first shift register and a first bit of the second shift register. A second switch is connected between the second output and the first bit of the second shift register. The first set of encoded bit streams and the second set of encoded bitstreams are combined and mapped to a frequency domain.

Unified STTC encoder for WAVE transceivers

The present invention provides a method and apparatus for the controlled synthesis of nanoparticles using a high temperature process. The reactor chamber includes a high temperature gas heated by means such as a plasma torch, and a reaction chamber. The homogenizer includes a region between the reactant inlets and the plasma (the spacer zone) to ensure that feeds from the reactant inlets are downstream of the recirculation zone induced by the high temperature gas. It also includes a region downstream of the reactant inlets that provides a nearly I dimensional (varying only in the axial direction) flow and concentration profile in the reaction zone to produce nanoparticles with narrow size distribution.

Method of producing nanoparticles using a evaporation-condensation process with a reaction chamber plasma reactor system

The present invention is a method of increasing particle surface area and decreasing the concentration of over-sized particles in a process for making metal oxide particles, particularly nanoparticle TiO, in an inlet-fed, plug flow, plasma reactor by vapor phase reaction of titanium tetrachloride and oxygen in the presence of a source of hydrogen to form titanium dioxide particles.

Plasma synthesis of metal oxide nanoparticles

Titanium dioxide nanopowder is produced by a process, comprising:

Titanium dioxide nanopowder manufacturing process

Electrochemical double layer capacitors are disclosed that advantageously include separators having at least one porous layer of nanofibers having average diameters of between about 50 nm and about 1000 nm that provide improved combinations of reduced thickness, barrier against the development of soft short-circuits and low ionic resistance as compared with known capacitor separators.

Electrochemical double layer capacitors including improved nanofiber separators

Alkaline and lithium batteries are disclosed that advantageously include separators comprising at least one porous layer of fine fibers having a diameter of between about 50 nm and about 3000 nm that provide improved combinations of reduced thickness, dendritic barrier against short-circuiting and low ionic resistance as compared with known battery separators.

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Newark, DE, United States of America

Lu Zhang