Patents Represented by Attorney, Agent or Law Firm Fay, Sharpe, Beall, Fagan, Minnich & McKee
  • Patent number: 5976661
    Abstract: A magnetic recording has very low warp characteristics but excellent film characteristics. Particularly, the recording medium has a high coercivity with a small range of coercivity distribution, with a warp characteristic below 3 .mu.m per radial inch. The medium is formed by heating a substrate at a high temperature with a temperature distribution on the substrate that is improved by the use of a heat distribution mask, which reduces the temperature distribution of the substrate to below .+-.3%.
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: November 2, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Shinji Fukaya, Yoshinori Honda, Akira Kato, Shuichi Kojima
  • Patent number: 5973406
    Abstract: An electronic device is solder bonded properly without using fluxes nor precise positioning with respect to a substrate. A bond pad with a size about twice the size of terminal pad of the electronic device is formed in a region on the substrate where the electronic device is to be mounted. After placing the electronic device of the substrate surface, the whole unit is heated in a nitrogen atmosphere to melt a bump formed on the terminal pad of the electronic device. The molten solder wets and spreads over the bond pads formed on the substrate, thereby establishing reflow soldering between the bond pads and the terminal pads. The position of the electronic device with respect to the substrate is spontaneously corrected due to a self-alignment function induced by wetting and spreading of the molten solder over the bond pad of the substrate.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: October 26, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Masahide Harada, Toru Nishikawa, Ryohei Satoh, Osamu Yamada, Takayuki Uda, Mitsugu Shirai
  • Patent number: 5972143
    Abstract: A method of manufacturing angiographic catheters comprises providing a length of elastomeric tube of a predetermined outer diameter and braiding multiple strands of wire wrapping about its exterior. A plastic bonding agent is extruded onto the entire length of the wire wrapping to bond the strands to each other. Thereafter, the wire wrapping is ground away at predetermined spaced locations along the length of the elastomeric tube to provide a series of wire wrapped sections joined by non-wrapped sections. An elastomer layer is disposed over both the wire wrapped sections and the non-wrapped sections throughout the length thereof. Subsequently, the coated length is severed into pieces with the pieces each constituting unitary construction including a wire wrapped section that forms a catheter body and a non-wrapped section joined to at least one end thereof to constitute a flexible catheter tip.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: October 26, 1999
    Inventor: Robert C. Stevens
  • Patent number: 5973197
    Abstract: A method for preparing carboxylic acids by carbonylating a reagent, particularly an alcohol, in the presence of a rhodium catalyst. According to the method, the liquid phase reaction is carried out in a first zone in the presence of a rhodium catalyst, and the resulting reaction mixture is partially vaporised in a second zone. The vaporised fraction containing the carboxylic acid is later purified and the unvaporised liquid fraction containing the catalyst is recirculated to the first zone. The method is charactracterised in that said unvaporised fraction is contacted with carbon monoxide in such a way that this compound is not returned to the second zone.
    Type: Grant
    Filed: April 21, 1997
    Date of Patent: October 26, 1999
    Assignee: BP Chemicals Limited
    Inventors: Philippe Denis, Robert Perron, Joel Schwartz
  • Patent number: 5971701
    Abstract: In order to manufacture a semiconductor device of high performance a small-sized transfer arm mechanism, capable of retaining a predetermined transfer stroke, is put to practical use without any increase in the height of the arm mechanism. The transfer arm includes arcuate portions having center axes different from each other, and restraint generating means for generating restraints in directions where the individual center axes are attracted. This way, a plurality of arms are joined by joints having a structure for transmitting rolling motions to the arcuate portions contacting each other to thereby control the drive shaft of the arcuate portions rotationally and thereby move the arms. This transfer arm mechanism is used in various environments including semiconductor manufacturing, such as DRAMs (dynamic random access memory).
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: October 26, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Yoshio Kawamura, Hideo Kashima, Shigeo Moriyama
  • Patent number: 5973027
    Abstract: Described is an ink for use in ink jet printers, comprising (a) a solvent, which consists at least of approximately 80% of a homopolar, non-watery solvent, (b) a pigment dispersed in the solvent and (c) a copolymer of vinyl-pyrrolidone with one or several long-chain .alpha.-olefins with at least 6 carbon atoms, specifically with 6 to 24 carbon atoms. Properties of the ink are as follows: reduced color bleeding, reduced penetration of coloring agent into the surface of the paper, improved optical density and improved storage stability.
    Type: Grant
    Filed: June 18, 1998
    Date of Patent: October 26, 1999
    Assignee: Pelikan Produktions AG
    Inventors: Nicole Howald, Peter Drescher
  • Patent number: 5971569
    Abstract: A surgical lighthead having a stacked elliptical reflector (20) directs light from a lamp (10) to an illumination zone (Y) without the need for a refractor to redirect the reflected light. The reflector is formed of at least three annular reflector segments (22, 24, 26) stacked on top of each other to form a continuous reflector surface. Each of the reflector segments has a longitudinal cross section of a different conical shape such as elliptical or parabolic for directing the light to a different portion of the illumination plane. The stacked elliptical reflector provides the benefits of reduction of the image of the filament in the light field and reduction of shadowing due to objects passing between the lighthead and the illumination plane.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: October 26, 1999
    Assignee: Steris Corporation
    Inventors: A. Michael Smith, Henry Holt Frazier
  • Patent number: 5973151
    Abstract: Disclosed are aromatic condensation compounds useful as building blocks for construction of various types of optically active substances and reagent, wherein the aromatic condensation compounds are represented by general formula (1) below and capable of forming enantiomeric isomers. In the formula, two Rs are the same or different functional groups and selected from among linear, branched and cyclic hydrocarbon groups of 1-16 carbon atoms, either of which R may be hydrogen. A portion of the aromatic nucleus may be reduced, or at least one of the two nitrogen atoms may be quaternary. The aromatic condensation compounds can be produced by heating and reacting N,N'-diphenyl-p-phenylenediamine with a carboxylic acid represented by the general formula --RCOOH in an amount of at least 2 molar equivalents with respect to the diamine, at 180-210.degree. C. in the presence of a Lewis acid such as zinc chloride.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: October 26, 1999
    Assignee: Japan Science and Technology Corporation
    Inventors: Yasutaka Tanaka, Akemi Sekita, Hiroshi Suzuki, Akiyoshi Torii
  • Patent number: 5974490
    Abstract: A mother board provided in a plural disk unit, which is formed with an interconnection pattern containing high speed control buses such as SCSI buses, is disposed at the central portion of a housing. A plurality of disk units capable of being removably inserted by plugging are directly mounted on the front side of the mother board through bus connectors, while connector units for external connection and having connectors of the control buses, terminal units having terminal circuits of the control buses, power units for supplying power to the disk units, and fan connectors having fans for cooling the interior of the housing are directly mounted on the back side of the mother board through connectors. Interconnections between the units are all contained in the interconnection pattern formed on the mother board. The entire plural disk unit is thus integrated.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: October 26, 1999
    Assignee: Hitachi, Ltd. and Hitachi Information Technology Co., Ltd.
    Inventors: Atsushi Fujimura, Kazuo Morita
  • Patent number: 5974466
    Abstract: There is provided an ATM controller which can support setting or alteration of protocol processing, and more greatly reduce the load (overhead) of software processing. The ATM controller performs the processing of an ATM layer and an AAL layer between a terminal and an ATM network, and comprises cell transmit control moans for transferring a packet from a terminal side to an ATM network side while segmenting the packet into data cells, cell reception control means for reassembling data cells received from the ATM network side into a packet and transferring the packet to the terminal side, a rewritable memory for storing a firmware, and a microprocessor for performing a cell analysis and the processing corresponding to the analysis result.
    Type: Grant
    Filed: December 27, 1996
    Date of Patent: October 26, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Mika Mizutani, Tatsuya Yokoyama, Eizou Hashi, Osamu Takada, Yoshiki Watanabe
  • Patent number: 5972295
    Abstract: A sample of a sample rack is sampled at analyzing units in the middle of a transfer line. A standby unit and a rack collecting unit are arranged near an exit of the transfer line. After sample, sampleracks are sorted out to the standby unit or the rack collecting unit at a first switching unit. The racks contained in the standby unit are sorted out to a returning line or the rack collecting unit in a second switching unit corresponding to a judged result of whether or not reexamination is required.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: October 26, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Masaaki Hanawa, Hiroshi Mitsumaki, Tadashi Ohishi, Susumu Kai, Hiroshi Watanabe
  • Patent number: 5973779
    Abstract: A fiber-optic imaging probe is disclosed for use in dynamic light scattering applications. The probe includes two monomode optical fibers and two GRIN lenses to form a pair of identical fiber-lens combinations. Each fiber is positioned off the optical axis of its associated lens. Further, the optical fibers are placed at an image plane of the lenses. The fiber-lens combinations are parallel to and mirror images of each other. The first fiber-lens combination projects a tightly focused spot of light into a scattering volume containing suspended or dispersed microscopic particles, or biological or live tissues. The second fiber-lens combination collects the light which is scattered from the particles in the scattering volume and conveys it to a photo detector and autocorrelator for analysis. The probe minimizes the scattering volume by advantageously using imaging principles of lenses. Further, the probe optimizes sensitivity and spatial coherence.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: October 26, 1999
    Inventors: Rafat R. Ansari, Kwang I. Suh
  • Patent number: 5974400
    Abstract: A user of services is enabled to utilize a highly value-added service employing secret data of the user without presenting the data to the service provider side. In a system in which a server is coupled with a client via a communication network, the client inputs and sends a service identifier to the server, receives a program to execute the service from the server, inputs secret data as client controlled data from an input device and sends a server control data request to the server, and then receives the requested data from the server. The input data is irreversibly processed by use of the program and received data such that the client sends results of the process to an expert on the server side to receive an advice of the expert. By referring to the advice, the service user inputs evaluation of the outputted results. The steps beginning at the data request input are repeatedly conducted until the evaluation becomes satisfactory, thereby transmitting the process results to the server.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: October 26, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Akira Kagami, Toshiyuki Ono, Haruko Nagaoka, Mitsuo Sudo
  • Patent number: 5973880
    Abstract: A negative pressure flying head slider includes an air bearing surface of a substantially rectangular shape disposed in opposed relation to a rotating magnetic disk. One side rail of the slider is adapted to be located at an outer periphery-side of the magnetic disk when the slider is mounted on a magnetic disk device, and has an inflow-side side rail portion which is disposed at an air inflow end-side of the slider, extending generally parallel to the longitudinal direction of the slider, and an outflow-side side rail portion which is disposed at an air outflow end-side of the slider, extending in a direction of a yaw angle. The angle of the outflow-side side rail portion with respect to the inflow-side side rail portion is greater than the maximum value of an absolute value of the yaw angle. The slider further includes a recess defined by a cross rail and the side rails, and a slit formed in the cross rail to permit the recess to communicate with the air inflow end of the slider.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: October 26, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Kiyoshi Hashimoto, Masaaki Matsumoto, Hidekazu Kohira, Yasuo Kojima, Shinji Yonemura
  • Patent number: 5970485
    Abstract: A method of fast clipping, despite of large number of users, can be achieved through analyzing query expressions, storing the number of query terms included in the query expressions in a term number count table, generating a finite automaton for matching the terms occurring in text data with all terms included in the query expressions, generating a user identifier table for storing the identifiers of users in association with the terms included in the query expressions, matching the terms by scanning the text data by the finite automaton, calculating for each user the occurrence count of terms occurring in the text data as substrings coincident with the terms included in the query expressions made to the user identifier table, storing the calculated occurrence count in the term occurrence count region of the table, comparing the calculated term occurrence count of the table with the number of terms included the query expressions, and when a match is found from the comparison, delivering the text data to the u
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: October 19, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Natsuko Sugaya, Hisamitsu Kawaguchi, Noriyuki Yamasaki
  • Patent number: 5968281
    Abstract: The present invention relates to a method of using a suction cleaning device which provides liquid dispensing, scrubbing, squeegeeing, and suction drying in a single, compact, self contained device. The suction cleaning device includes a cleaning device housing, a handle connected to the housing, an absorbent cleaning member mounted on the housing and movable between an extended and a retracted position, and a pair of squeegee blades. The device includes a suction system which draws the water from the floor surface which has been cleaned into a tank mounted on the housing which collects the liquid from the floor surface. A clean water bottle is provided on the housing for delivering cleaning liquid to the floor and a rechargeable battery power source provides power to the suction motor. The cleaning device is compact and lightweight and leaves the floor in a substantially dry state.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: October 19, 1999
    Assignee: Royal Appliance Mfg. Co.
    Inventors: Michael F. Wright, Laurie M. Shumaker, Craig M. Saunders, Joseph Lazarra, Mark Cipolla, Glenn E. Specht, Richard C. Farone, Jeffrey M. Kalman, Terry L. Zahuranec
  • Patent number: 5969124
    Abstract: The present invention is directed to the isolation and purification of an L1-like molecule (i.e. L1CAM) from human brain. It has been found that the isolated L1CAM molecule supports neurite growth in vitro. Applicants have also cloned and sequenced the entire coding region of human L1CAM, and found that it shows a very high degree of homology to mouse L1cam with 92% identity at the amino acid level. This similarity suggest that L1CAM is an important molecule in normal human nervous system development and nerve regeneration. Overall, there is substantially less homology to chick Ng-CAM; they are 40% identical at the amino acid level but many regions are highly conserved. Comparison of the sequences from human, mouse, chick and Drosophila, indicates that the L1 immunoglobulin domain 2 and fibronectin type III domain 2 are strongly conserved and thus are likely functionally important.
    Type: Grant
    Filed: April 24, 1995
    Date of Patent: October 19, 1999
    Assignee: Case Western Reserve University
    Inventor: Vance Lemmon
  • Patent number: 5969896
    Abstract: A magnetic recording/reproducing device has an inductive write element provided with a coil and magnetic cores for recording information on a medium, a magnetoresistive read element for transducing a change in a magnetic field leaking from a medium, on which information is recorded, into an electrical signal, a detector for detecting an output signal of the read element, a bias field applying unit for applying a bias field to the read element, and a recording/reproducing operation controller for reproducing information based on an output signal from the read element and for controlling the recording current applying unit based on an inputted signal to record information. The recording/reproducing operation control unit has a stabilizing unit for controlling the bias field applying unit to make an absolute value of the bias field in a state where a magnetic field leaking from the medium is applied to the read element larger than that during a normal reproducing operation.
    Type: Grant
    Filed: January 6, 1997
    Date of Patent: October 19, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Kazuhiro Nakamoto, Yoshiaki Kawato, Hiroshi Fukui, Hiroyuki Hoshiya
  • Patent number: D415699
    Type: Grant
    Filed: February 11, 1998
    Date of Patent: October 26, 1999
    Assignee: Zenzen Limited
    Inventor: Caroline Denise Langley
  • Patent number: D416101
    Type: Grant
    Filed: July 2, 1998
    Date of Patent: November 2, 1999
    Assignee: John Manufacturing Limited
    Inventor: John Se-Kit Yuen