Patents Represented by Attorney Bert J. Lewen
  • Patent number: 4922327
    Abstract: A semiconducting device and method of making the same are provided. The semiconducting device is provided with a gate, a source and a drain disposed on one side of a current carrying layer and a substrate formed from one type of semiconducting material disposed on the other side thereof. The current carrying layer includes a bulk region formed from said one type of semiconducting material and a drift region formed from the opposite type of semiconducting material, the bulk and the drift regions of which form a pn junction. The drift region includes a pair of parallel passages, one passage of which has a lower doping concentration than the other. The bulk region includes a first and a second portion, the first portion of which isolates the second portion from the other passage and has a lower doping concentration than the second portion and the one passage. The one passage is also extended so as to isolate the bulk region from the substrate.
    Type: Grant
    Filed: December 24, 1987
    Date of Patent: May 1, 1990
    Assignee: University of Toronto Innovations Foundation
    Inventors: Jose G. Mena, C. Andre T. Salama
  • Patent number: 4871025
    Abstract: An improved ground levelling machine (10) for levelling small areas of ground comprising a main frame (11), a pivotal sub-frame (15) trailing said main frame (11) and pivotally connected thereto, a scraper blade (40) carried by the main frame (11), a hopper (27) carried on the main frame (11) for the supply of soil, sand or other filling material, a plurality of ground-engaging wheels (16) supporting the sub-frame (15), power means (22) to effect pivotal movement of the sub-frame (15) relative to the main frame (11) and to thereby raise and lower the main frame (11) relative to the ground, and control means (59) for controlling the operation of the power means (11) and to in turn control the elevation of the scraper blade (40) relative to a preselected reference plane.
    Type: Grant
    Filed: November 9, 1987
    Date of Patent: October 3, 1989
    Inventors: Trevor K. Mayfield, Lindsay F. Radcliffe
  • Patent number: 4871363
    Abstract: Corrective intraocular lens for use with an intact natural eye lens, by insertion through an incision into the eye and implantation therein in spaced relation to the natural lens, including a lens body having a pair of opposed haptics constituting a first insertable leading haptic and a last insertable trailing haptic, each outwardly terminating in a transverse edge having a pair of laterally spaced apart and outwardly projecting contact lobes for engaging an adjacent eye tissue portion at a corresponding pair of spaced apart tissue points, the trailing haptic transverse edge having a 2-3 mm length, and the leading haptic transverse edge having a length larger than 2-3 mm and preferably about as large as the lens body diameter, such that the 2-3 mm length transverse edge of the last inserted haptic may be passed inwardly of the incision under minimum deflection of the intraocular lens and minimum risk of contact with the natural lens by the intraocular lens during implantation.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: October 3, 1989
    Inventor: Charles D. Kelman
  • Patent number: 4867321
    Abstract: The invention provides a system for automatically balancing the jib of cranes of the type with articulated arms or telescopic arms depending on the variation of the reach of this jib.The annular section chambers of the hydraulic cylinder controlling the auxiliary arm of the crane and of the hydraulic cylinder controlling the pivoting arm carrying the counterweight are connected in series by a duct. The full section chambers of the hydraulic cylinders are connected selectively, by actuation of a valve, either to the pressure line or to the return line. In the right-hand position of the valve, the counterweight is pivoted and the arm is raised simultaneously, whereas in the opposite position of the valve the arm is lowered and the counterweight is raised.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: September 19, 1989
    Assignee: Societ',acu/3/ Montgon Systemes
    Inventor: Serge Montgon
  • Patent number: 4868158
    Abstract: The invention relates to a method for the preparation of a carrier loaded with lipophilic biologically active substance based on reconstituted LDL (Low Density Lipoprotein), wherein (1) LDL is lyophilized in the presence of a protective agent; (2) the lyophilized LDL is extracted with an organic solvent; (3) the biologically active substance solubilized in a solvent is incubated with extracted LDL; the solvent is evaporated and the reconstituted LDL solubilized in an aqueous buffer; the non-incorporated biologically active substance is separated from the LDL-complex, characterized in that in step (1) the protective agent is a monosaccharide, a disaccharide, a water-soluble polysaccharide, a sugar alcohol or a mixture of these and in step (3) optionally the extract obtained during the extraction of the lyophilized LDL is mixed with the lipophilic biologically active substance solubilized in an organic solvent and this mixture is then incubated with the LDL.
    Type: Grant
    Filed: February 12, 1987
    Date of Patent: September 19, 1989
    Assignee: Oncholab AB
    Inventors: Michele Masquelier, Mikael Ros, Curt Peterson, Mats Rudling, Sigurd Vitols
  • Patent number: 4866106
    Abstract: An antifouling coating composition comprising a settable resin and a non-metallic algicide that does not react with the resin. The composition can be applied to flexible and rigid substrates and does not contain heavy metals.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: September 12, 1989
    Assignee: Waitomo Industrial Investments Ltd.
    Inventors: Scott P. W. Pellow, Barry S. Larkman, Paul Stovicek
  • Patent number: 4866412
    Abstract: A tactile sensor device, of value in a sensor system for identifying an object by contact, in the form of a first array of parallel elongated lengths of electroconductive material, a second array of parallel elongated lengths of electroconductive material, disposed transverse to the first array so that lengths in the two arrays intersect, and a resilient piezoresistive material disposed in continuous contact with the lengths of electroconductive material in one of the arrays and located between the arrays.
    Type: Grant
    Filed: August 11, 1987
    Date of Patent: September 12, 1989
    Assignee: The Microelectronics Applications Research Institute Limited
    Inventor: Zenon G. Rzepczynski
  • Patent number: 4865910
    Abstract: Here is disclosed a glass fiber product for use in the reinforcement of fluororesin which is improved in the adhesiveness to fluororesin. Thus, a glass fiber product for use in the reinforcement of fluororesin pre-treated with perfluoroalkylsilane represented by the following formula:CF.sub.3 --CH.sub.2 --Ch.sub.2 --SiX.sub.3(X is a hydrolyzable group such as alkoxy groups having 1 to 4 carbon atoms) retains an excellent electrical insulation resistance.
    Type: Grant
    Filed: November 22, 1988
    Date of Patent: September 12, 1989
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Hirokazu Inoguchi, Shoichi Watanabe
  • Patent number: 4863965
    Abstract: Pharmaceutical compositions of the prodrug type, a process for the preparation thereof, a process for the preparation of the as prodrug functioning compounds and compounds obtained herein.The pharmaceutical compositions of the invention contain organic acid anhydrides with formula 1 through 5, as well as the pharmacological acceptable salts thereof as prodrug functioning compounds, together with a suitable pharmaceutically acceptable gaseous, liquid or solid carrier.The prodrug systems of the invention possess as favorable property that they amend the residence time of the pharmaceutical composition in the body by influencing the transport system.Furthermore they increase the biological availability because of the more lipophilic properties of the anhydride compared with the acid, so that this improved administration performance may contribute to lower dosages.
    Type: Grant
    Filed: May 14, 1986
    Date of Patent: September 5, 1989
    Assignee: B.V.B.A. Inpharm
    Inventors: Frans H. J. Jansen, Etienne J. De Cock
  • Patent number: 4861713
    Abstract: This invention relates to a method for determination of cholinesterase activity, characterized by using, as a substrate, a choline derivative represented by the general formula (I): ##STR1## wherein X is a halogen atom; Y.sub.1 is a hydroxyl group as a substituent in the 2- or 5-position; and Y.sub.2 is a hydroxyl group as a substituent in the 3-position.The determination method of this invention permits easy and simple determination of cholinesterase activity, and is very useful as a determination method for clinical examinations for the purpose of determining cholinesterase in serum.
    Type: Grant
    Filed: April 14, 1987
    Date of Patent: August 29, 1989
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Katsumasa Kuroiwa, Katsuhiro Katayama, Takeshi Nagasawa
  • Patent number: 4854577
    Abstract: An hydraulic device is used for an exercise machine, having a double-acting hydraulic pump, which can be moved in one direction for developing one set of muscles (for example, biceps), and in the other direction for developing another set of muscles (for example, triceps). The invention provides a valve having two portions, each with a pressure regulating valve and a non-return valve. Oil displaced by operation of the pump in a first direction passes through a first pressure regulating valve, and return oil through a second non-return valve, and this is reversed when the pump is operated in a second direction. If the pressure regulating valves permit flow rates which differ, they can be made appropriate for movement effected by the different sets of muscles.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: August 8, 1989
    Assignee: Titan Fitness Products Pty., Ltd.
    Inventor: Anthony M. Sims
  • Patent number: 4853127
    Abstract: A microporous membrane for use in filtration, the membrane being formed of a polyetherimide derived from an aromatic bis (ether anydride) and an organic diamine. The membrane is formed from a casting liquid comprising the polyetherimide together with a solvent and a non-solvent, forming a thin layer of the liquid and extracting at least part of the solvent and non-solvent to form the required membrane. The membrane may be modified by the inclusion of additional chemical moieties.
    Type: Grant
    Filed: December 2, 1987
    Date of Patent: August 1, 1989
    Assignee: Domnick Hunter Ilblry Limited
    Inventors: Minh S. Le, John S. Wilkes
  • Patent number: 4849366
    Abstract: The invention relates to a radiation hardened (R-H) bulk complementary metal oxide semiconductor (CMOS) isolation structure and a process for its formation. The isolation structure may be automatically generated from the original thin oxide layer of any commercial product by computer aided design and basically comprises a grounded MOS gate surrounding the active areas. The grounded MOS gate replaces the conventional LOCOS field oxide and consists of novel oxide-silicon nitride-oxynitride gate insulator and a CVD polysilicon film. The radiation resistance of this gated isolated structure (GIS) is suitable for application in radiation-immunity VLSI integrated circuit (.ltoreq.2 .mu.m design rule).
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: July 18, 1989
    Assignees: Industrial Technology Research Institute, Chung Shan Institute of Science and Technology
    Inventors: Je-Jung Hsu, Hsing-Hai Chen
  • Patent number: 4843957
    Abstract: Provided is a rice polishing machine of a vertical shaft and frictional type, comprising a vertical tubular member, having a perforated wall; a vertical main shaft rotatably disposed in the tubular member and having one end part and an other end part; a spiral rotor fitted on the one end part of the vertical main shaft; a polishing rotor having an outer peripheral surface on which agitating projection ridges are formed, fitted on the other end part of the main shaft and further having a center axis around which the polishing rotor rotates in a certain rotating direction; and a polishing chamber mainly defined by the tubular member and the polishing rotor and having upper and lower ends one of which is connected with a rice grain feed section and the other of which is connected with a rice grain discharge section, wherein the peripheral surface of the polishing rotor is formed such that the distance between the center axis of the polishing rotor and a part of the peripheral surface of the polishing rotor, whic
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: July 4, 1989
    Assignee: Satake Engineering Co., Ltd.
    Inventor: Toshihiko Satake
  • Patent number: 4844891
    Abstract: A broad spectrum preservative composition which comprises (a) a formaldehyde donor and (b) a halopropynyl compound; formulations containing such compositions, particularly personal care and household products; and a method of inhibiting the growth of microorganisms which includes contacting said microorganisms with the preservative composition.
    Type: Grant
    Filed: February 3, 1988
    Date of Patent: July 4, 1989
    Assignee: Lonza, Inc.
    Inventors: Marvin Rosen, Kenneth J. Iandoli
  • Patent number: 4842023
    Abstract: A flexible hose comprises a flexible helically convoluted plastics material tube 12 wound helically with a reinforcing profile strip 14. The strip 14 is of such a cross-section as to support the tube wall and limit the maximum radius of curvature R2 at maximum flexion to a value less than that which is obtain with an equivalent standard hose FIG. 5). Preferably the profiled strip has a cross-section which is non-circular and comprises two components, one 18 being substantially axially of the tube, and the other 20 being substantially radially of the tube. The axial component provides support for the tube wall and the radial component serves to improve resistance to radial forces and limits the radius of curvature of the adjacent convolution.
    Type: Grant
    Filed: February 10, 1988
    Date of Patent: June 27, 1989
    Assignee: Standard Hose Limited
    Inventor: Barrie F. Whitworth
  • Patent number: 4842684
    Abstract: An apparatus for use in the industry of shaping a sheet of fibres on a mould for the manufacture of a range of articles such as aircraft wings, in which a sheet or ribbon of glued or adhesive sized fibres is automatically shaped on the mould, the apparatus having an applicator (16) for engaging the fibre elements (7) on the mould (2) and, at a place immediately upstream, a wedge-shaped element (19) having a rounded edge and adapted to separate the top protective film (8) from the fibres prior to their engagement with the mould, and a slot (18) sized to the width of the film and operative to remove the same and to provide accurate guiding of the fibres immediately thereafter engaged on the mould.
    Type: Grant
    Filed: July 21, 1987
    Date of Patent: June 27, 1989
    Assignee: Forest Line of B.P.
    Inventors: Pierre Tillement, Andre Greffioz
  • Patent number: 4842984
    Abstract: A novel photosensitive resin composition, which has fairly high sensitivity to light and developable with water comprising of essential components a resin represented by the general formula (I), ##STR1## wherein X, which may be present or absent, represents acetic acid when present, Y stands for a group containing carbon-carbon double bond(s) represented by the formula (II), ##STR2## n is an integer of 10 or greater, more than 0 and less than 1, and t is 0 or 1, and a sodium or potassium salt of 4,4'-diazidostilbene-2,2'-disulfonic acid represented by the general formula (IV), ##STR3## wherein z stands for sodium atom or potassium atom; or the resin represented by the general formula (I), the sodium or potassium salt of 4,4'-diazidostilbene-2,2'-disulfonic acid represented by the general formula (IV), and an aromatic ketone represented by the general formula (V), ##STR4## wherein G stands for hydrogen atom or an amino group or dialkylamino group represented by the general formula (VI), ##STR5## where u is 0,
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: June 27, 1989
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Hajime Serizawa, Koichi Ojima, Kiyoshi Shimizu
  • Patent number: 4838905
    Abstract: A filter element comprises a relatively rigid fluid-permeable cylinder (5), around which is provided a body (7) of non-woven fibrous filter material. A jacket (6) of permeable material is positioned around the outer surface of the filter material, and is heat-shrunk onto the filter material in order to hold this under substantially uniform radial compression over the whole of its area.
    Type: Grant
    Filed: September 3, 1987
    Date of Patent: June 13, 1989
    Assignee: Domnick Hunter Filters Limited
    Inventors: Colin T. Billiet, Robert M. Fielding, Stephen N. Smith
  • Patent number: 4837180
    Abstract: A method of fabricating a lightly-doped drain field effect transistor (LDDFET) is disclosed. The initial steps include anisotropic polysilicon etching and isotropic photoresist erosion to obtain a ladder-shaped polysilicon gate. The polysilicon is partially oxidized and the source/drain region is formed by the implantation of a heavy dose of n-type ions. Thereafter, the silicon dioxide is removed and a lightly doped source/drain region formed by a second ion implantation between the gate region and the heavily doped source/drain region.
    Type: Grant
    Filed: July 9, 1987
    Date of Patent: June 6, 1989
    Assignee: Industrial Technology Research Institute
    Inventor: Fung-Ching Chao