Patents Represented by Attorney, Agent or Law Firm Fay, Sharpe, Beall, Fagan, Minnich & McKee
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Patent number: 5969976Abstract: A division method and circuit performs a division for signed data by adding or subtracting a divisor to or from the dividend or the partial remainder from the division, according to the sign of the divisor or the dividend and the partial remainder to acquire a new partial remainder. The division is repeated a predetermined number of times in which a quotient bit is acquired according to the sign of the acquired partial remainder or the divisor. The dividend is corrected by subtracting 1, which is the significance of an LSB of the corresponding dividend, from the dividend when the sign of the dividend is negative, and the corrected dividend is used for the division processing.Type: GrantFiled: October 10, 1997Date of Patent: October 19, 1999Assignees: Hitachi, Ltd., Hitachi VLSI Engineering Corp., Hitachi Microcomputer System Ltd.Inventors: Shumpei Kawasaki, Eiji Sakakibara, Kaoru Fukada, Takanaga Yamazaki, Yasushi Akao, Shiro Baba, Toshimasa Kihara, Keiichi Kurakazu, Takashi Tsukamoto, Shigeki Masumura, Yasuhiro Tawara, Yugo Kashiwagi, Shuya Fujita, Katsuhiko Ishida, Noriko Sawa, Yoichi Asano, Hideaki Chaki, Tadahiko Sugawara, Masahiro Kainaga, Kouki Noguchi, Mitsuru Watabe
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Patent number: 5970485Abstract: 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 uType: GrantFiled: July 10, 1997Date of Patent: October 19, 1999Assignee: Hitachi, Ltd.Inventors: Natsuko Sugaya, Hisamitsu Kawaguchi, Noriyuki Yamasaki
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Patent number: 5970091Abstract: The object of the invention is to provide an equalizer capable of generating an equalized output compensated in the non-linearity of the signal reproduced by an MR head and a reliable high-density magnetically recorded-signal reproducer. An equalizer of an FIR-type filter structure comprises a plurality of delay elements for delaying input signals by a certain period, a plurality of coefficient processing units provided to input or output taps of the delay elements, and an adder for obtaining the sum of the outputs of the coefficient processing units, in which the distortion of the reproduced waveform can be corrected by a relatively simple circuit structure by comparing the signal value inputted to the coefficient processing unit from each tap with a predetermined threshold level and changing the signal value and a coefficient value to be multiplied in accordance with the comparison result.Type: GrantFiled: November 26, 1996Date of Patent: October 19, 1999Assignee: Hitachi, Ltd.Inventors: Yasutaka Nishida, Seiichi Mita, Naoki Satoh, Yoshiju Watanabe
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Patent number: 5969357Abstract: An electron beam which can transmit through part of a specimen and can reach a portion not exposing to the electron beam is irradiated and a scanning image is obtained on the basis of a signal secondarily generated from a portion irradiated with the electron beam. Dimension-measuring start and end points are set on the scanning image and a dimension therebetween is measured. A cubic model is assumed, the cubic model is modified so as to match the scanning image, and dimension measurement is carried out on the basis of a modified cubic model.Type: GrantFiled: November 26, 1997Date of Patent: October 19, 1999Assignee: Hitachi, Ltd.Inventors: Hideo Todokoro, Kenji Takamoto, Tadashi Otaka, Fumio Mizuno, Satoru Yamada, Sadao Terakado, Katsuhiro Kuroda, Ken Ninomiya, Tokuo Kure
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Patent number: 5968382Abstract: A cutting system for cutting a workpiece by laser emission relies upon local cooling of the workpiece at the point at which cutting starts and ends. Optionally, local cooling can also be provided at a cross point where two cutting lines intersect. Relying upon the difference in thermal stress between the laser beam incidence point and the surrounding cooled portion, an initial crack can be generated in a specified direction, whereby the initial crack is propagated to form the desired cutting line. In one embodiment, the cooling is provided by a low temperature solid such as a Peltier cooling plate and the temperature of the workpiece near a point of incidence of the laser beam is determined. The determination can be made by measuring the temperature of a plasma generated near the point of incidence, or by directly measuring the temperature of the portion of the workpiece near the point of incidence.Type: GrantFiled: July 12, 1996Date of Patent: October 19, 1999Assignee: Hitachi, Ltd.Inventors: Takashi Matsumoto, Shinichi Kazui, Hideaki Sasaki, Tateoki Miyauchi, Tatsuji Sakamoto
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Patent number: 5968104Abstract: An area where a front device (1A) is allowed to move is set beforehand and the operation of the front device is controlled so that the front device will not go out of the set area. For this control process, an arm cylinder speed calculating portion (9d) of a control unit (9) estimates an arm cylinder speed for use in control by taking the sum of a low-frequency component of an arm cylinder speed which is derived through coordinate transformation and differentiation of an arm rotational angle detected by an angle sensor (8b), and a high-frequency component of an arm cylinder speed which is derived from a command value applied from a control lever unit (14b) to a flow control valve (15b) for an arm and a flow rate characteristic of the flow control valve (15b). The control unit controls the operation of the front device with the estimated operating speed.Type: GrantFiled: June 23, 1997Date of Patent: October 19, 1999Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Eiji Egawa, Kazuo Fujishima, Masakazu Haga, Hiroshi Watanabe
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Patent number: 5968281Abstract: 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: GrantFiled: June 8, 1998Date of Patent: October 19, 1999Assignee: 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
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Patent number: 5968332Abstract: This invention relates to the formation and use of a variable, multilayer system of discrete, discontinuous and nonsequential molecular sieves, comprising of agarose-acrylic gels of distinct composition. Each of the individual gel-layers of the system is designed according to partition and/or retardation coefficients for specific retention and therefore selective separation of selected molecules of different molecular sizes. The unique multilayer composite acrylic gel system of this invention makes it possible to separate micro- and macromolecules which differ in molecular weights by millions of daltons. So isolated any physically defined molecular groups are superiorly suitable for further chemical, physico-chemical or biological characterization.Type: GrantFiled: February 12, 1997Date of Patent: October 19, 1999Inventor: Jan J. Opplt
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Patent number: 5967982Abstract: An interventionalist or operator uses a variety of apparatus 30 including tools, tool guides, and pointers in a procedure on a region of interest. The region of interest was previously the subject of a diagnostic imaging procedure to generate three dimensional diagnostic image data, selective slices or other portions of which are displayable on video monitors 34. The position of the apparatus 30 in operator space is determined by actuating emitters 32, receiving the emitted signals with receivers 12, and calculating the position of the pointer in operator space. A pair of radio translucent constructions 14, 16 each carry a plurality of radiopaque markers 18 which are positioned adjacent the region of interest. Two or more projection images are taken through the region of interest and the radiopaque markers using a movable x-ray tube 22 and radiation detector 24.Type: GrantFiled: December 9, 1997Date of Patent: October 19, 1999Assignee: The Cleveland Clinic FoundationInventor: Gene H. Barnett
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Patent number: 5968538Abstract: The invention relates to a method of imparting anti-pathogenic properties to a substrate material comprising: (a) preparing a coating composition containing an anti-pathogenic agent consisting essentially of PVP-I and N-9 in a ratio of from about 100:0 to about 0:100 of PVP-I to N-9, the coating composition further containing a pre-mix solution with which the anti-pathogenic agent is intimately mixed in a ratio of from about 6:4 to about 8:2 of agent to pre-mix on a dry basis, and having a percent solids content of from about 5% to about 35% solids; (b) feeding the anti-pathogenic coating composition into a coating machine; (c) loading substrate onto the coating machine; (d) operating the coating machine such that the coating composition comes into intimate contact with at least one surface of the substrate; and (e) drying the coated substrate material.Type: GrantFiled: July 31, 1997Date of Patent: October 19, 1999Assignee: Viro-Kote, Inc.Inventor: Donald E. Snyder, Jr.
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Patent number: 5968743Abstract: The present invention provides a DNA sequencing method comprising: (1) a step of fragmentation of a sample DNA and amplifying each fragment to obtain a first DNA fragment; (2) a step of obtaining from the first DNA fragment a second DNA fragment substantially complementary to the sample DNA at least at the 3' terminus thereof; and (3) a step of performing an extension reaction of complementary strand, using the sample DNA as a template to produce a third DNA fragment containing a base sequence complementary to the second DNA fragment and having a size longer than that of the second DNA fragment, and using the third DNA fragment as a template for sequencing of the sample DNA. DNA sequencing can be proceeded efficiently with extremely low redundancy.Type: GrantFiled: October 9, 1997Date of Patent: October 19, 1999Assignee: Hitachi, Ltd.Inventors: Hiroko Matsunaga, Kazunori Okano, Hideki Kambara
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Patent number: 5969351Abstract: A semi-micro liquid chromatograph/mass spectrometer apparatus has an ion source. The space from the end portion of a flow passage of a liquid chromatograph shell to a vaporization portion is closed so as to prevent the inflow of a gas from outside the ion source into the space. Further, the nebulization and vaporization portions are joined together and heated by a common heater. Dilution of a sample to be analyzed is prevented, and high sensitivity detection becomes possible in a low velocity liquid chromatograph/mass spectrometer.Type: GrantFiled: February 6, 1997Date of Patent: October 19, 1999Assignee: Hitachi, Ltd.Inventors: Takayuki Nabeshima, Minoru Sakairi, Yasuaki Takada, Yukiko Hirabayashi, Hideaki Koizumi
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Patent number: 5967196Abstract: The device comprises a holder (10), which has a bottom (11) with a sealing element (17) for sealing off the air supply opening to a bubble generator of print head (2) and, at the top, an arm (15) with a passage bore (16). A spike (23) serves for boring or piercing an opening (28) to the ink reservoir in a cover area (5) of the print head (2). An ink reservoir (27) is inserted with a hollow needle into the created opening (28). The reservoir (27) has in a bore (32) of lid (31) a cone (33). A closing element (22) serves for closing an air supply opening (6) of a lung of the print head (2).Type: GrantFiled: April 1, 1998Date of Patent: October 19, 1999Assignee: Pelikan Produktions AGInventor: Markus Moser
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Patent number: 5965881Abstract: This scanning probe microscope can accurately obtain information on surfaces of a sample when measuring the sample in a broad range from a slow scanning speed to a fast scanning speed. The scanning probe microscope comprises a cantilever (16) with a probe (15) at its tip, an optical lever mechanism (17,18) for measuring displacement of the cantilever (16), a mechanism for approaching/separating the cantilever against the sample, XY scanning circuit (21), and further comprises a Z axis piezoelectric element (14b) of a tripod for changing the distance between the cantilever and the sample, a control circuit (20) for controlling the distance between the cantilever and the sample to cause a displacement signal s1 obtained from the optical lever mechanism to be identical to a set value s0, and an adder (24) for adding a control signal from the control circuit and a signal based on the deviation between the displacement signal and the set value.Type: GrantFiled: November 13, 1997Date of Patent: October 12, 1999Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Takafumi Morimoto, Ken Murayama, Sumio Hosaka
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Patent number: 5964091Abstract: A cylindrical gas turbine combustor, burning injected fuel and guiding the combustion gas to turbine nozzles, includes a cylindrical portion such as a combustor liner and a transition piece, exposed to the combustion gas, which is made of austenitic Fe base casting alloy, Ni base casting alloy or Co base casting alloy.Type: GrantFiled: July 9, 1996Date of Patent: October 12, 1999Assignee: Hitachi, Ltd.Inventors: Yutaka Fukui, Tetsuo Kashimura, Hideyo Kodama, Hiroyuki Doi, Ryo Hiraga
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Patent number: 5966448Abstract: According to a cryptographic communication system which can safely perform cipher conversion processing when cryptographic communication is performed between terminals using different cipher types, when a terminal 10A-1 connected to a LAN-A using a cryptographic algorithm C1 transmits data to a terminal 10B-1 connected to a LAN-B using a cryptographic algorithm C2, the terminal 10A-1 generates two meaningless data items from the data to be transmitted, decrypts the two generated data items according to the cryptographic algorithm C1, and then transmits the decrypted data to two cryptographic protocol conversion servers and for dividing the data into two data items. Each of the cryptographic protocol conversion servers decrypts each transmitted data item, the re-encrypts the decrypted data according to the cryptographic algorithm C2, and then transmits the data to the terminal 10B-1.Type: GrantFiled: August 26, 1996Date of Patent: October 12, 1999Assignee: Hitachi, Ltd.Inventors: Hikari Namba, Kazuo Takaragi, Satoshi Miyazaki
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Patent number: 5964955Abstract: An operating system (20) for a washer (1) is mounted on a moveable trolley (52). The trolley carries all of the failure prone elements such as pumps (24, 28, 40) solenoid valves 80, electrical heaters (48), an electrical control circuit (50) and the like. Quick-release couplings (58, 59,60 62), between the operating system and plumbing associated with a washing chamber (10), allow the operating system to be quickly disconnected from and reconnected with the chamber. The trolley is then wheeled a distance away from the chamber, providing ready access to all the operating equipment for maintenance and repair.Type: GrantFiled: November 14, 1997Date of Patent: October 12, 1999Assignee: Steris CorporationInventors: Daniel Rochette, Michel Lemay, Yves-Andrebec Theriault, Michel Emond, Mario Duchaine, Ghislain Parent, Nathalie Thibault
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Patent number: 5964702Abstract: A self-curling elongate non-conductive sheet (A) defines a helical cuff electrode (10). A plurality of contact members (40) are linearly disposed along a direction (C) between a first layer (30) and a second layer (32) of laminated elastomeric material. The first layer is stretched along direction (F) oblique to the direction (C) before lamination such that the cuff electrode is elastomerically biased to curl into a helix. Windows (50) are defined in the elastomeric first layer (31) and bonding layer (34) to provide for electrical conduction between the contact members (40) and the nerve tissue (60) about which the cuff is wrapped. Method steps for endoscopic implantation of the cuff electrode (10) include flattening and then sliding the cuff from a carrier (100), the cuff helically self-wrapping around the nerve as it is urged from the carrier held stationary.Type: GrantFiled: July 30, 1997Date of Patent: October 12, 1999Assignee: Case Western Reserve UniversityInventors: Warren M. Grill, Jr., Matthew D. Tarler, John T. Mortimer
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Patent number: 5965084Abstract: A process for producing a non-woven fabric of ultrafine polyolefin fibers by subjecting a web of splittable conjugate polyolefin fibers to a water needle processing, and non-woven fabric thus obtained are described. The polyolefin composite fibers, contain 1.0 to 7.0% by weight of a hydrophilic component blended therein. The non-woven fabrics include ultrafine fibers having a size of 0.5 denier or less and a non-circular cross-section. Splitting and peeling off of the conjugate fibers and generation of static electricity with the composite fibers at a carding step is suppressed. The non-woven fabrics have an excellent wiping property, softness, and hydrophilic property.Type: GrantFiled: April 1, 1998Date of Patent: October 12, 1999Assignee: Chisso CorporationInventor: Masaru Nishijima
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Patent number: 5960940Abstract: A self-adjusting electric tappet switch includes a housing, an electrical switch contact carried on the housing, a slider member movable relative to the housing and adapted to actuate the electrical switch, and an elongate tappet member extending from the housing and selectively engageable with the slider member. The slider member has a first engagement portion adapted to selectively connect with a second engagement portion provided on the elongate tappet member. The switch is self-adjusted by relative rotational movement between the slider member and the elongate tappet member to lock the pair together.Type: GrantFiled: October 31, 1997Date of Patent: October 5, 1999Assignee: TRW Fahrzeugelektrik GmbH & Co. KGInventors: Ralf Elting, Wolfgang Huber, Reinhard Lange