Abstract: The present invention is an improved method of employing a wet/dry vacuum cleaner for wet material pick-up. By employing a hydrophobic and air permeable filter material, such as an expanded polytetrafluoroethylene (PTFE), with a tight gasket around its edge in place of a conventional wet/dry vacuum filter, it has been determined that the filter can be retained in place at all times during operation, regardless of the material being collected.

Abstract: A method and apparatus is provided for dimensioning and manipulating a patterned material by selectively applying a vacuum and/or positive pressure to the patterned material.

Abstract: A method of controlling warp of electronic assemblies includes mounting a first component to one side of a substrate, the first component having a different coefficient of thermal expansion (CTE) than the substrate and thereby tending to generate bending moments that distort the shape of the first component, and mounting a second component to an opposite side of the substrate and opposite the first component. The second component has a CTE that approximately matches that of the first component, thereby tending to generate bending moments that offset the distorting bending moments.

Abstract: This invention provides a liquid metering and surface coating device which can satisfactorily perform the operation of applying a release liquid to at least the surface of toner image fixation rolls in plain paper copying, with exceptional accuracy, uniformity, and durability. The device comprises a porous support layer adhered to a metal shaft. The porous support layer is comprised of an open-celled thermosetting polymer foam internally reinforced to obtain the strength, resilience, and heat resistance needed for high durability in use as part of a hot toner image fixation mechanism in a PPC machine. The porous support is comprised of materials having high compatibility with and wettability by the liquids to be distributed and having high liquid holding capacity so as to provide smooth continuous liquid delivery.

Abstract: The present invention relates to a process for metallizing features of an electronic component, where the metallized features, conductive pads, conductive traces, are coated and encapsulated with at least one metal layer and the features on the front side and the back side of the component have different thicknesses

Abstract: A method of preparing an adhesive composite is provided where a expanded fluoropolymer having nodes and interconnected fibrils with a void volume formed from the node and interconnected fibril structure is at least partially filled with a paste formed from a thermoset or thermoplastic adhesive and a particulate inorganic filler, sufficient adhesive and filler are present to provide a composite containing between about 5 to about 40 volume percent expanded fluoropolymer; 5-85 volume percent inorganic filler; and 10-95 volume percent of adhesive and filler, the adhesive and filler being contained within the voids of the expanded fluoropolymer. In the composite, the ratio of the mean flow pore size of the expanded fluoropolymer to the largest particle size of the filler is at least about 2 and/or the ratio of the minimum pore size of the expanded fluoropolymer to the largest particle size of the filler is at least about 1.4 within the composite.

Abstract: The present invention relates to a system and method for performing reliability screening on semi-conductor wafers and particularly to a highly planar burn in apparatus and method for uses including wafer level burn-in (WLBI), diced die burn-in (DDBI), and packaged die burn-in (PDBI). The burn-in system includes a burn-in substrate with a planar base, a temporary Z-axis connecting member, and a Z-axis wafer level contact sheet electrically coupled to one another for screening wafers, diced die, and packaged electronic components, their assembly and use.

Abstract: The present invention is a floss material defined by a towed filament. The filament may be made from a towed polytetrafluoroethylene material or a towed polymeric material.

Abstract: An improved integral composite cable jacket or tubing is disclosed wherein a fluoropolymer fiber array is disposed between a first and second elastomer jacket layer. At least one of the elastomer jacket layers is comprised of silicone. The first and second elastomer jacket layers are bonded together through predetermined open spaces defined by the fiber array.

Abstract: A cover or lid assembly is provided for EMI/RFI shielding. The cover or lid is used in combination with an electrical assembly having an electrical ground, at least one electronic component electrically connected to the assembly, a conductive frame, disposed about the electronic component. The conductive frame is electrically connected to the ground. An electrically conductive adhesive is disposed continuously between the frame and the lid to mount the lid to the conductive frame to shield the electronic component from electromagnetic and radio frequency interference.

Abstract: The present invention advances the art of vibration damping material constructions known to date. In one aspect of the present invention, a vibration damping article comprises at least one layer of polytetrafluoroethylene (PTFE). The vibration damping article of the present invention may also comprise at least one adhesive layer for mounting to an object of interest. The vibration damping article of the present invention may also comprise at least one constrained layer, such as a metal or polymer film layer, for example. The constrained layer may be adhered to the PTFE layer, with a layer of adhesive, or the constrained layer may be adhered with heat, pressure, ultrasonics or other laminating means, depending upon the constrained layer construction.

Abstract: A Faraday cage is provided for EMI/RFI shielding which includes a substrate having an electrical ground; at least one electronic component electrically connected to the substrate; a conductive housing; and an electrically conductive adhesive. The electrically conductive adhesive may be defined by a substrate having numerous passageways through the substrate. The passageways are defined by a plurality of walls of the material making up the substrate. The walls are covered with a layer of conductive metal. The passageways are filled with a non-conductive adhesive resin. The conductive housing is adhesively electrically mounted to the electrical ground of the substrate, over the electronic component, to shield electromagnetic and radio frequency interference.

Abstract: An electrically-pumped short wavelength vertical cavity surface emitting laser (VCSEL) is optically coupled to a long wavelength VCSEL for optically pumping the long wavelength VCSEL. The long wavelength VCSEL has a long wavelength active-absorber medium interposed between a top long wavelength mirror and a bottom long wavelength mirror. The long wavelength VCSEL emits radiation at a first wavelength in a range from 1250 nm to 1650 nm. The short wavelength VCSEL emits radiation at a second wavelength in a range from 700 nm to 1050 nm.

Abstract: An adhesive composite material comprises an expanded fluoropolymer with nodes and interconnected fibrils, the fluoropolymer having a void volume which is at least partially filled with a mixture containing a thermoset or thermoplastic adhesive and a particulate inorganic filler. The composite material contains sufficient adhesive and filler such that the composite contains between about 5 to about 40 volume percent expanded fluoropolymer; 5-85 volume percent inorganic filler; and 10-95 volume percent of adhesive and filler, the adhesive and filler being contained within the voids of the expanded fluoropolymer. In the composite, the ratio of the mean flow pore size of the expanded fluoropolymer to the largest particle size of the filler is at least about 2 and/or the ratio of the minimum pore size of the expanded fluoropolymer to the largest particle size of the filler is at least about 1.4.

Abstract: A method is provided for forming at least one raised metallic contact on an electrical circuit. Generally, this method includes the following steps: providing a composite base substrate which is defined by at least a first conductive layer, a dielectric material and a second conductive layer; removing a portion of the first conductive layer to expose the dielectric material; removing the exposed portion of the dielectric material to the second conductive layer, thereby forming a depression; depositing at least one layer of conductive material on at least side wall portions of the depression; removing the second conductive layer; and completely removing the dielectric material to said first conductive layer thereby forming a raised metallic contact which extends perpendicularly away from the first conductive layer.

Abstract: A multi-layered barrier glove having high tactility and dexterity characteristics includes an outer shell fabricated from relatively flexible and durable material, and a barrier insert disposed underneath the shell and fabricated from gas permeable, liquid impermeable material. An inner layer or insert may further be provided for adding comfort to the wearer. Specifically, the outer shell is a knit glove made out of aramid fibers for providing durability, cut resistance, and fire resistance identified by non-melt and non-flammable properties. The barrier insert is fabricated from porous polytetrafluoroethylene ("PTFE") that is shaped to fit inside the outer shell. The barrier insert provides the user with the barrier protection to protect the user's skin, while still maintaining the breathability.

Abstract: A thermally conductive article comprises a polytetrafluoroethylene matrix, an elastomer interpenetrating the polytetrafluoroethylene matrix, thermally conductive particles, and expanded polymeric particles. The thermally conductive article is compressible and has good thermal conductivity under compression.

Abstract: A method of forming a blind-via in a laminated substrate by forming a first conductive layer. A dielectric layer is then formed on the first conductive layer. An exposed second conductive layer is formed on the dielectric layer, with the second conductive layer having a preformed aperture. The dielectric layer is laser drilled through to the first conductive layer to form a blind-via at a location within the preformed aperture of the second conductive layer using a plurality of laser pulses. Each laser pulse has a first energy density per pulse that is greater than an ablation threshold of the dielectric layer and less than an ablation threshold of the first conductive layer. The first conductive layer is then laser drilled for a predetermined number of pulses. Each of the predetermined number of pulses has a second energy density per pulse that is greater than an ablation threshold of the first conductive layer.

Abstract: The invention relates to an open cell, porous, selectively conductive member containing an elastomer that is reusable in use and preparation. The scaffold for the elastomer has conductive areas through conductive, z-axis pathways are provided which are electrically isolated from adjacent z-axis conductive pathways. The elastomer is non-adhesive and/or non tacky and allows for temporary connection of electronic components.

Abstract: A vertical cavity surface emitting laser is constructed on a semiconductor substrate, and includes a second mirror stack disposed on the substrate, a gain region with an active material within the second mirror stack capable of emitting electromagnetic radiation at a fundamental wavelength, a non-linear element disposed above the second mirror stack capable of emitting electromagnetic radiation at a harmonic of the fundamental wavelength in response to the electromagnetic radiation at the fundamental wavelength, and a first mirror stack disposed above the non-linear element. Electrodes are applied to the second mirror stack and the substrate for electrically pumping current into the gain region without passing through the non-linear element. A conducting layer can be disposed in the second mirror stack and an annular current confinement region can be formed in the second mirror stack around the gain region to help guide current into the active material.