Abstract: A method for simultaneously forming a bit-line contact and a node contact first forms a polysilicon layer and a first insulator on a substrate, and then patterns patterning the polysilicon layer and the first insulator, wherein the substrate consists of an active area and an isolation area. Next, a second insulator is formed on the exposed substrate and the first insulator. Then, by forming a photoresist layer on the second insulator and patterning the photoresist layer, a pattern containing a bit-line contact pattern and a node contact pattern is transferred onto the second insulator. By performing an etching back process on the second insulator, the bit-line contact and the node contact are formed simultaneously in a self-aligned way.

Abstract: Cold flow is a problem that is commonly encountered in the handling and storage of low molecular weight linear rubbers, such as low vinyl polybutadiene rubber and isoprene-butadiene rubber. This invention is based upon the unexpected discovery that the cold flow of such rubbery polymers can be greatly reduced by incorporating a small block of polystyrene therein. The rubbery polymers of this invention which exhibit a low level of cold flow can be synthesized by simply terpolymerizing 1,3-butadiene, isoprene and from about 0.5 phm to about 3 phm of styrene under anionic polymerization conditions in the absence of a polar modifier. It is preferred to utilize batch polymerization techniques. However, continuous polymerization techniques can also be utilized. This invention more specifically disclosed a rubbery polymer which is comprised of polymer chains containing repeat units which are derived from 1,3-butadiene, isoprene and from about 0.

Abstract: A rotor includes a shaft; a permanent magnet layer; and a retainer comprising a conductive, low magnetic permeability material bound to the rotor shaft. The permanent magnet layer is semi-restricted between the shaft and the retainer. In one embodiment, the magnet layer includes a molded ring magnet. In another embodiment, the magnet layer includes a plurality of magnet segments which can be situated on the rotor in rotor pockets or in a rotor cage. The bond between the retainer and the rotor can be enabled by a cap or by support elements. A high conductivity material can be situated over the retainer with the combination of the retainer and the high conductivity material having a resistivity high enough to minimize space harmonic losses and low enough to minimize time harmonic losses. The high conductivity material can also be applied to induction rotors for excluding high frequency components while permitting penetration of low frequency torque producing fields.

Abstract: Metal salts of saturated aliphatic alcohols can be used as modifiers in lithium initiated solution polymerizations of diene monomers into rubbery polymers. Sodium t-amylate is a preferred modifiers because of its exceptional solubility in non-polar aliphatic hydrocarbon solvents that are employed as the medium for such solution polymerizations. However, using sodium t-amylate as the polymerization modifier in commercial operations where recycle is required can lead to certain problems. These problems arise due to the fact that sodium t-amylate reacts with water to form t-amyl alcohol during steam stripping in the polymer finishing step. Since t-amyl alcohol forms an azeotrope with hexane, it co-distills with hexane and thus contaminates the feed stream. The present invention solves the problem of recycle stream contamination. This invention is based upon the discovery of highly effective modifiers that do not co-distill with hexane or-form-compounds during steam stripping which co-distill with hexane.

Abstract: A golf club head mainly comprises a body member having a neck portion adapted to receive a shaft; a faceplate disposed in the face section of the body member, the faceplate having at least a fastening rod extending therefrom; and at least a balancing weight body disposed between the body member and the faceplate. The balancing weight body having a slot which the fastening rod of the faceplate is inserted therethrough and is secured by a fastener, wherein the faceplate and the balancing weight body are integrally formed with the body member.

Abstract: A method of making contact openings for memory cell units of DRAM IC devices is disclosed. The contact opening is used to connect the cell transistor source/drain terminal to the storage capacitor electrode located substantially above. The method includes the step of first patterning the initial opening in a shielding layer for the contact opening. The diameter of the initial opening is then reduced by the formation of sidewall spacers in initial opening. The initial opening in the shielding layer is then used to implement the etching for the formation of the contact opening. Due to reduced size of the contact opening, short-circuiting situations arising between the via formed in the contact opening and the bit lines next to the via as a result of misalignment in the process of fabrication can be reduced, thereby improving the device fabrication yield rates.

Abstract: The process and catalyst system of this invention can be utilized to synthesize a highly random styrene-butadiene rubber having a high trans content by solution polymerization. The styrene-butadiene rubber made by the process of this invention can be utilized in tire tread rubbers that exhibit improved wear characteristics. This invention more specifically reveals a catalyst system for use in exothermal polymerizations which consists essentially of (a) an organolithium compound, (b) a barium alkoxide and (c) a lithium alkoxide. The subject invention further discloses a process for synthesizing a random styrene-butadiene rubber having a low vinyl content by a process which comprises copolymerizing styrene and 1,3-butadiene under isothermal conditions in an organic solvent in the presence of a catalyst system which consists essentially of (a) an organolithium compound, (b) a barium alkoxide and (c) a lithium alkoxide.

Abstract: The present invention provides a fabricating method and structure of a dynamic random access memory. In this method, a substrate having a transistor thereon is provided. A bit line is formed on the substrate. The bit line is electrically coupled with the transistor through a contact hole. A second dielectric layer having a node contact opening is formed on the bit line. An etching step is performed to etch the bit line. A concave surface is formed on the sidewall of the bit line. Spacer layers are formed on the sidewalls of the node contact opening. Each spacer layer is used to insulate the concave surface. Thus, from the top-view layout, a portion of the node contact opening can overlap with the bit line. Thus, the size of DRAM is effectively reduced.

Abstract: A method for forming self-aligned landing pads on a substrate containing a pre-formed first conducting layer and a pre-formed first insulator, wherein the substrate further includes a patterned second insulator to form contact openings exposing the substrate. A second conducting layer in formed on the substrate. A photoresist layer is formed on the second conducting layer and patterned to transfer the pattern onto the second conducting layer. The second conducting layer is patterned to expose the first insulator. Then, an etching back process is performed to selectively remove more of the second conducting layer in order to form the self-aligned landing pads.

Abstract: This invention relates to a tire tread compound that is easily processable which can be used to improve the treadwear, rolling resistance and traction characteristics of tires. The tire tread compounds of this invention are a blend of tin-coupled polybutadiene, high vinyl polybutadiene and natural rubber. This blend of low glass transition temperature rubber and high glass transition temperature rubber is surprisingly easy to process which makes the concept of this invention commercially feasible. Thus, the tire tread compounds of this invention can be utilized in making tires having greatly improved traction characteristics and treadwear without sacrificing rolling resistance. These improved properties may be due, in part, to better interaction and compatibility with carbon black and/or silica fillers. The polybutadiene in the blend can be asymmetrical tin-coupled to further improve the cold flow characteristics of the rubber blend.

Abstract: A method of fabricating a node contact window. A substrate having devices and a first dielectric layer is provided. Bit lines having spacer are formed on the first dielectric layer and a second is formed on the first dielectric layer. A hard material layer is then formed on the second dielectric layer. An opening is formed within the second dielectric layer to expose the spacer and the first dielectric layer. A polysilicon spacer is then formed on the sidewalls of the opening. A node contact window is formed by etching through the first dielectric layer to expose the substrate.

Abstract: A jet-cleaning device for a developing station, especially suitable for installing on a wafer back cleaning ring of a CLEAN TRACK MK-V developing station. The jet-cleaning device is used for cleaning the wafer back of a wafer mounted above a spinner. The jet-cleaning, device comprises a jet-cleaning block and a vertical nozzle. The jet-cleaning block has a nozzle groove having an inlet for pumping in a cleaning solution. The vertical nozzle is connected to the nozzle groove for forming a vertical jet of the cleaning solution so that waste liquid on a wafer back can be removed.

Abstract: Tire rubbers which are prepared by anionic polymerization are frequently coupled with a suitable coupling agent, such as a tin halide, to improve desired properties. It has been unexpectedly found that greatly improved properties for tire rubbers, such as lower hysteresis, can be attained by asymmetrically coupling the rubber.

Abstract: A compact bearingless machine drive system includes: a first rotor segment; a first stator segment with the first stator segment including a drive winding and a first control winding; a second rotor segment; a second stator segment with the second stator segment including the drive winding and a second control winding; and a rotor shaft. The first and second rotor segments are attached to the rotor shaft. A common end ring is coupled between the first and second rotor segments. A drive inverter controls the drive winding to generate torque, and first and second control inverters control the first and second control windings to generate radial forces on the first and second rotor segments.

Abstract: The DRAM cell is formed by covering the cell's transfer FET with a conformal insulating layer. A self aligned contact etch removes a portion of the conformal insulating layer from above a first source/drain region of the FET and then a first polysilicon layer is deposited over the device. Etching defines a polysilicon pad from the first polysilicon layer with edges of the polysilicon pad disposed over the gate electrode and an adjacent wiring line. A thick, planarized second insulating layer is provided over the device, filling the volume defined by the locally cupped surface of the polysilicon pad. Etching is performed to remove a portion of the planarized insulating layer using the pad polysilicon layer as an etch stop for the process. A second, thick polysilicon layer is next provided to fill the cavity and the layer is patterned to laterally define the lower capacitor electrode.

Abstract: This invention relates to a tire tread compound that is easily processable which can be used to improve the treadwear, rolling resistance and traction characteristics of tires. The tire tread compounds of this invention are a blend of tin-coupled polybutadiene, high vinyl polybutadiene and natural rubber. This blend of low glass transition temperature rubber and high glass transition temperature rubber is surprisingly easy to process which makes the concept of this invention commercially feasible. Thus, the tire tread compounds of this invention can be utilized in making tires having greatly improved traction characteristics and treadwear without sacrificing rolling resistance. These improved properties may be due, in part, to better interaction and compatibility with carbon black and/or silica fillers. The polybutadiene in the blend can be asymmetrical tin-coupled to further improve the cold flow characteristics of the rubber blend.

Abstract: This invention relates to a tire tread compound that is easily processable which can be used to improve the treadwear, rolling resistance and traction characteristics of tires. The tire tread compounds of this invention are a blend of tin-coupled polybutadiene, high vinyl polybutadiene and natural rubber. This blend of low glass transition temperature rubber and high glass transition temperature rubber is surprisingly easy to process which makes the concept of this invention commercially feasible. Thus, the tire tread compounds of this invention can be utilized in making tires having greatly improved traction characteristics and treadwear without sacrificing rolling resistance. These improved properties may be due, in part, to better interaction and compatibility with carbon black and/or silica fillers. The polybutadiene in the blend can be asymmetrical tin-coupled to further improve the cold flow characteristics of the rubber blend.

Abstract: A method for minimizing the dimension of a contact forms a thick dielectric layer on a provided substrate first, and then forms a contact on the first dielectric layer and expose the substrate by performing a slope etching process. The contact with the target contact size is obtained by partially removing the thick dielectric layer. Since the target contact size is obtained by a self-aligned method, the upper diameter of the contact is not limited by a conventional fabrication process. Furthermore, after a contact is formed, it is optional to fill the contact with filler. Even after a desired contact is formed in the case that filler is used, the remains of the filler can be either kept or removed depending on the conductivity of the filler.

Abstract: This invention relates to a tire tread compound that can be used in manufacturing tires having outstanding traction characteristics without compromising treadwear and rolling resistance. The tire tread compounds of this invention are made utilizing an isoprene-butadiene rubber having a high glass transition temperature and having SnR.sub.3 end groups, wherein R represents an alkyl group, such as a tertiary-butyl group. These isoprene-butadiene rubbers are made by reacting an isoprene-butadiene rubber having a glass transition temperature which is within the range of about -50.degree. C. to about 0.degree. C. with a tin compound of the formula SnR.sub.3 X, wherein R represents an alkyl group and wherein X represents a halogen. This invention more specifically discloses a tire tread rubber composition which is comprised of (1) about 60 phr to about 95 phr of an isoprene-butadiene rubber having a glass transition temperature which is within the range of about -50.degree. C. to about 0.degree. C.

Abstract: A method for forming a DRAM capacitor that utilizes silicon nitride spacers on two occasions to perform self-aligned contact window etching operations. Furthermore, on the second etching operation, one less photomask is required for the etching of the second via. In addition, a silicon nitride layer over the first polysilicon layer has a smaller thickness than the usual oxide layer in a conventional method of manufacture. Consequently, a shallower contact step height for the capacitor, which is beneficial to the production of miniaturized devices, is obtained. Finally, the tri-fork shaped capacitor structure further increases the surface area of the capacitor so that the capacitance of the DRAM capacitor is increased.