Patents Represented by Law Firm Oblon, Fisher, Spivak, McClelland & Maier
  • Patent number: 5167231
    Abstract: An ultrasonic probe including a piezoelectric substrate divided into a plurality of substrate sections aligned in one direction, a common electrode connected to one side of all the separated substrate sections, and plural individual electrodes being applied to an opposite side of the separated substrate sections, whereby unnecessary vibration modes are suppressed and, additionally, crosstalk characteristics are improved.
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: December 1, 1992
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yutaka Matsui
  • Patent number: 5072269
    Abstract: A semiconductor memory device includes a plurality of semiconductor pillar projections separated by grooves formed in longitudinal and transverse directions in a substrate and arranged in a matrix manner, a MOS capacitor and a MOSFET formed on side surfaces at lower and upper portions, respectively, of each pillar projection, a diffusion layer of a source or drain of each MOSFET formed in an upper end face of the pillar projection, and a bit line connected to the diffusion layer. The bit line is in contact with the upper end face of the pillar projection in a self-alignment manner.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: December 10, 1991
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Katsuhiko Hieda
  • Patent number: 5015452
    Abstract: An improved process for the preparation of monodispersed spherical colloidal particles from rare earth salts is disclosed. These colloidal particles are obtained in this process by homogeneous precipitation techniques involving the forced hydrolysis of rare earth salts in aqueous media. More specifically, this process initially involves the formation of hydrolyzed cations which are precursors or intermediate to precipitation of the desired colloidal particle. The objective in the formation of this precursor species is to reach critical supersaturation concentration of this particle forming species so that only one burst of nuclei occurs. Colloidal particle formation is then effected by diffusion of solutes onto the existing nuclei. The improvements of this process reside, in part, in the ability to control the kinetics of formation of this intermediate species. Such control permits the formation of colloidal dispersions having very narrow particle size distribution.
    Type: Grant
    Filed: January 16, 1987
    Date of Patent: May 14, 1991
    Assignee: Clarkson University
    Inventor: Egon Matijevic
  • Patent number: 4980470
    Abstract: Quinolonecarboxylic acid derivatives of the following formula: ##STR1## wherein R indicates a hydrogen atom or lower alkyl group, R.sup.1 indicates a lower alkyl group, R.sup.2 indicates a hydrogen atom, amino group or nitro group, X indicates a halogen atom, and Z indicates a halogen atom, piperazino group, N-methylpiperazino group, 3-methylpiperazino group, 3-hydroxypyrrolidino group, or pyrrolidino group of the following formula, ##STR2## (here, n is 0 or 1, R.sup.3 indicates a hydrogen atom or lower alkyl group, R.sup.4 indicates a hydrogen atom, lower alkyl group and R.sup.5 indicates a hydrogen atom, lower alkyl group, acyl group or alkoxycarbonyl group), the hydrates and pharmaceutically acceptable salts thereof are useful as antibacterial agents.
    Type: Grant
    Filed: January 16, 1987
    Date of Patent: December 25, 1990
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Kuniyoshi Masuzawa, Seigo Suzue, Keiji Hirai, Takayoshi Ishizaki
  • Patent number: 4942155
    Abstract: The novel compounds are provided with good antibacterial and antitumour activity.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: July 17, 1990
    Assignee: Farmitalia Carlo Erba S.p.A.
    Inventors: Giuseppe Cassinelli, Arpad Grein, Sergio Merli, Giovanni Rivola
  • Patent number: 4940446
    Abstract: A rotating member such as a sprocket to be coupled with a shaft is formed with a fitting bore which extends on the center axis and opens at at least one of its axial end portions. The rotating member is arranged in and rotatably held by a case such that its fitting bore opens toward the outside of the case. The shaft is inserted into and coupled with the fitting bore held in the case such that it can rotate integrally with the rotating member. This rotating member is formed with an air communication portion for providing communication between the inside and outside of the fitting bore and equipped with a valve for opening or closing the air communication portion. The valve may be opened in response to the rise or drop in the internal pressure of a fitting bore, by the pressure of the shaft or by a centrifugal force. With the valve being closed, lubrication oil in the case is prevented from leaking.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: July 10, 1990
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaki Inui, Mitsuhiko Okada, Seitoku Kubo, Shozoh Okuda, Masaki Hosono
  • Patent number: 4931065
    Abstract: Reactive dyeings on textile materials containing cellulose fibers are aftertreated with aqueous solutions of benzylated resins which are obtainable(a) by condensation of methylamine and epichlorohydrin or(b) by heating triethanolamine and/or triisopropanolamine in the presence of acidic catalystsand have been reacted with from 0.25 to 1 mole of benzyl chloride per mole of amine in the condensate.The dyed textile materials aftertreated in this manner possess good wet fastness.
    Type: Grant
    Filed: October 21, 1986
    Date of Patent: June 5, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Baumgarte, Rolf Fikentscher, Sigismund Heimann, Heinrich Mertens, Siegfried Schneider, Michele Vescia
  • Patent number: 4925910
    Abstract: Copolycondensate molding materials are obtainable by polycondensation offrom 2 to 98 mol % of 2,2-di-(4'-hydroxyphenyl)-propane (A),from 2 to 98 mol % of 4,4'-dihydroxydiphenyl sulfone (B) andfrom 0 to 96 mol % of (C) ##STR1## where R.sup.1 and R.sup.2 are each H, C.sub.1 -C.sub.6 -alkyl or C.sub.1 -C.sub.6 -alkoxy, X is a chemical bond, --S--, --O--, --CO--, CR.sup.3 R.sup.4 (where R.sup.3 and R.sup.4 are different when n and p are each 0), or SO.sub.2 -- only when n or p is 0), R.sup.3 and R.sup.4 are each H, C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, aryl or halogen-substituted alkyl of 1 to 4 carbon atoms, m is 0 or 1, and n and p are each 0, 1, 2, 3, or 4,with from 1 to 100 mol % of (D) ##STR2## where R.sup.5 and R.sup.6 have the same meaning as R.sup.1 and R.sup.2, and v and w are each 0, 1, 2, 3 or 4, and from 0 to 99 mol % of (E) ##STR3## where R.sup.7 -R.sup.10 are each Cl or F or have the same meanings as R.sup.1 and R.sup.2, q is 0 or 1, r, s, t and n are each 0, 1, 2, 3 or 4, Z.sub.
    Type: Grant
    Filed: April 9, 1987
    Date of Patent: May 15, 1990
    Assignee: BASF Aktiengesellschaft
    Inventor: Gerhard Heinz
  • Patent number: 4922883
    Abstract: A multi spark ignition system using an ignition capacitor and an ignition transformer uses a device for providing charging energy to the ignition capacitor. A field effect discharge switching means is used for discharging the energy that is stored in the ignition capacitor through the primary winding of an ignition transformer. An oscillator is used for causing the discharging switching circuit to operate intermittently with a proper cycle. An additional controlling circuit controls the consumption of additional magnetic energy which is stored in the ignition transformer when it is in its non-operative state. Two returning means are used to consume the magnetic energy or for returning the energy and the ignition transformer under the non-operative and operative states of the discharge switching circuit.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: May 8, 1990
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventor: Shinichiro Iwasaki
  • Patent number: 4917642
    Abstract: A method of manufacturing an air-tight ceramic container is disclosed. This method includes the steps of coating an active metal consisting of Ti and/or Zr on an opening end face of a ceramic tubular member in an amount of 0.1 to 10 mg/cm.sup.2, thereby forming an active metal layer, placing a brazing filler metal on the active metal layer, placing a metal cover member for shielding an opening portion of the ceramic tubular member so that a peripheral portion end face of the metal cover member is in contact with the brazing filler metal, and melting the brazing filler metal by heating, thereby brazing the metal cover member to the opening end face of the ceramic tubular member.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: April 17, 1990
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masako Nakahashi, Makoto Shirokane, Hiromitsu Takeda, Tatsuo Yamazaki, Tsutomu Okutomi, Shozi Niwa, Mikio Okawa, Mitsutaka Homma
  • Patent number: 4897967
    Abstract: An apparatus for truing the cylindrical outer peripheral grinding surface of a grinding wheel includes a truing head which is movable toward or away from the grinding wheel in a first direction which is parallel to the grinding surface and in a second direction which is perpendicular to the first direction. A truing wheel is rotatably supported on the truing head, has a truing surface and is movable with the truing head for truing the grinding surface. A contacting detection member is secured to the truing head, projects therefrom toward the grinding surface and has an end surface which can be brought into contact with the grinding surface. A device is provided for detecting the contact of the end surface of the detection member with the grinding surface and producing an output signal upon detecting their contact. Three feed control devices are provided to move the truing head in various directions.
    Type: Grant
    Filed: January 23, 1987
    Date of Patent: February 6, 1990
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Toshio Maruyama, Yukio Oda, Syoji Yamaguchi
  • Patent number: 4878312
    Abstract: In a method for culturing and cultivating fungi according to the present invention, the woods with the small diameter are used as the host woods. Into these woods with the small diameter, the fungi are inoculated through a cellulose sheet. The inoculated fungi are cultured and cultivated in a plastic bag having a porous site.According to the culture and cultivation method of the present invention, the mushroom of high quality can be harvested in a very short period.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: November 7, 1989
    Assignee: Compex Co., Ltd.
    Inventor: Michitaka Shimizu
  • Patent number: 4879166
    Abstract: A carrier medium for a coloring matter, which comprises an ink absorbent and a substance present on the surface of the absorbent, which has an adsorptivity of from 20 to 100 mg/g.
    Type: Grant
    Filed: July 7, 1988
    Date of Patent: November 7, 1989
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Katsutoshi Misuda, Takafumi Hasegawa
  • Patent number: 4874939
    Abstract: An apparatus for detecting position/variance of input light is disclosed which includes a photoelectric conversion device receiving input light constituted of a first resistive layer formed of a first photoelectric conversion material and a second resistive layer formed of a second photoelectric conversion material connected with the first resistive layer through a depletion layer or directly, wherein the first resistive layer is provided with uniform resistivity throughout its surface so that a linear output proportional to the average of the distances between one end of the photoelectric conversion device and positions of the input light is detected and the second resistive layer is provided with resistivity dependent upon the distance from its one end so that a quandratic ouput proportional to the average of the squares of the distances between one end of the photoelectric conversion device and positions of the input light is detected.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: October 17, 1989
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Yoshiro Nishimoto, Yasuji Yoneda, Shinichi Imaoka, Yasuhide Nakai, Akimitsu Nakaue, Yoshihiko Onishi, Hiroyuki Tachibana, Takayoshi Inoue, Takuya Kusaka, Hiroyuki Takamatsu, Shigeki Tojyo, Hiroshi Kajikawa, Kozo Nishimura
  • Patent number: 4874937
    Abstract: A digital sun sensor having an ND filter, a prism, an opaque layer formed on the prism and having a slit, a band-pass filter, and a linear array sensor. A sunbeam passes through ND filter, and is diffracted as it passes through the slit, and is refracted by prism. The diffracted sunbeam, which has a specified wavelength, passes through the band-pass filter and reaches the linear array sensor. The sensor is driven by a first clock signal, thereby generating electrical signals. An automatic gain control circuit maintains these signals at a constant peak value. The output signal of automatic gain control circuit is compared with a reference level. When this output is at a level lower than the reference level, the first clock signal is supplied to an N-bit counter. When the output is at a level higher than the reference level, a second clock signal having a frequency half that of the first clock signal is supplied to the N-bit counter. N-bit counter counts the pulses of either clock signal.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: October 17, 1989
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Tsuguhiko Okamoto
  • Patent number: 4874595
    Abstract: Calcium-urea nitrate [Ca(NO.sub.3).sub.2.4CO(NH.sub.2).sub.2 ] is produced by means of a process, according to which:a liquid composition is prepared, at a temperature not higher than C., which contains urea and calcium nitrate, in a molar ratio to each other equal to, or approximately equal to, 4/1, and having a water content comprised within the range of from 0 to 15% by weight;said liquid composition is sprayed, through a spray nozzle, on previously formed solid particles of calcium-urea nitrate, kept moving at a temperature comprised within the range of from to approximately C., and under a stream of an inert gas;calcium-urea nitrate is recovered from said solid products from the spray.The so obtained calcium-urea nitrate is in the form of a granular and free-flowing solid, free from the tendency to form dusts, and is useful in agriculture as a nitrogenous fertilizer.
    Type: Grant
    Filed: February 5, 1988
    Date of Patent: October 17, 1989
    Assignees: Enichem Agricoltura S.p.A., CCM S.r.l., Tecnocentro S.r.l.
    Inventors: Antonio Crispoldi, Andrea Moriconi, Mario Chiappafreddo
  • Patent number: 4873010
    Abstract: Disclosed herein are magnetic iron oxide particles comprising spindle-like magnetite or maghemite particles having an aspect ratio(major:minor) of less than 4:1 and containing 0.1 to 20 atomic % of Si to Fe, and a process for producing the same.
    Type: Grant
    Filed: April 15, 1987
    Date of Patent: October 10, 1989
    Assignee: Toda Kogyo Corp.
    Inventors: Atsushi Takedoi, Hiroyuki Kondo, Masaru Isoai, Yoshitaka Yoshinaga, Tosiharu Harada, Yosiro Okuda, Hiroshi Sumita, Hirofumi Kawasaki, Kohji Mori
  • Patent number: 4869848
    Abstract: A flame-retardant composition is prepared by mixing 100 parts by weight of a rubber or plastics free from any halogen with about 50 to about 200 parts by weight of magnesium hydroxide having an average particle diameter of about 0.3 to about 2 .mu.m and about 5 to about 50 parts by weight of carbon black powder having an oil absorption of about 0.5 to about 2.0 ml/g, and then cross-linking the mixture with an organic peroxide, sulfur, or a sulfur compound as a vulcanizing agent. By forming an electrical insulation and/or a sheath of the flame-retardant composition, there is provided a flame-retardant cable of the type including a cable core composed of an electric conductor coated with the electrical insulation or a plurality of such cores twisted together and covered, together with a filler, with the sheath.
    Type: Grant
    Filed: March 11, 1987
    Date of Patent: September 26, 1989
    Assignee: Fujikura Ltd.
    Inventors: Masatake Hasegawa, Hirotada Kobayashi, Hideo Sunazuka, Akira Yoshino, Takao Matsuda, Yoshioki Shingo
  • Patent number: 4869857
    Abstract: Porous membranes are produced by dissolving a film-forming polymer in a good solvent for the polymer, forming a film of the resulting polymer solution, and forcibly contacting saturated steam or mist-containing steam with at least one surface of said film. Such porous membranes have pores having a narrow pore diameter distribution and extending in a direction substantially perpendicular to the membrane surface at a high surface pore density on at least one surface thereof.
    Type: Grant
    Filed: May 28, 1987
    Date of Patent: September 26, 1989
    Assignee: Itsubishi Rayon Co., Ltd.
    Inventors: Hajime Itoh, Hiroshi Takahashi, Kouji Ohbori, Hideaki Habara
  • Patent number: 4867807
    Abstract: A high-strength low-ductility material is formed by a method which comprises treating a bulk or powder of the material thereby converting coarse grains thereof into hyperfine grains capable of manifesting superplasticity when the strain rate is higher than 5.times.10.sup.-3 s.sup.-1, enclosing the treated material with a metallic insulating member, heating the material to a temperature for manifestation of superplasticity, and forging the material by the use of a die in a state heated to a temperature beyond which the die yields to heat.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: September 19, 1989
    Assignee: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Yasunori Torisaka, Masahito Katoh, Yoshinori Nakawawa