Patents Represented by Attorney James H. Laughlin
  • Patent number: 6078490
    Abstract: A method is provided for treating materials, especially organic materials, with pulsed electrical fields, wherein the method includes the step of applying an agile pulse sequence having at least three pulses to a material, wherein the agile pulse sequence has one, two, or three of the following characteristics: (1) at least two of the at least three pulses differ from each other in pulse amplitude; (2) at least two of the at least three pulses differ from each other in pulse width; and (3) a first pulse interval for a first set of two of the at least three pulses is different from a second pulse interval for a second set of two of the at least three pulses. When biological cells are treated to form pores in an electroporation procedure, the induced pores are sustained for a relatively long period of time, and viability of the biological cells is maintained.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: June 20, 2000
    Assignee: Cyto Pulse Sciences, Inc.
    Inventor: Richard E. Walters
  • Patent number: 5715236
    Abstract: A system and method for communicating information signals using spread spectrum communication techniques. PN sequences are constructed that provide orthogonality between the users so that mutual interference will be reduced, allowing higher capacity and better link performance. With orthogonal PN codes, the cross-correlation is zero over a predetermined time interval, resulting in no interference between the orthogonal codes, provided only that the code time frames are time aligned with each other. In an exemplary embodiment, signals are communicated between a cell-site and mobile units using direct sequence spread spectrum communication signals. In the cell-to-mobile link, pilot, sync, paging and voice channels are defined. Information communicated on the cell-to-mobile link channels are, in general, encoded, interleaved, bi-phase shift key (BPSK) modulated with orthogonal covering of each BPSK symbol along with quadrature phase shift key (QPSK) spreading of the covered symbols.
    Type: Grant
    Filed: November 24, 1993
    Date of Patent: February 3, 1998
    Assignee: Qualcomm Incorporated
    Inventors: Klein S. Gilhousen, Irwin M. Jacobs, Roberto Padovani, Lindsay A. Weaver, Jr., Charles E. Wheatley, III, Andrew J. Viterbi
  • Patent number: 5504181
    Abstract: An aliphatic spray polyurea elastomer is disclosed. The elastomer comprises an (A) and (B) component. The (A) component includes an aliphatic isocyanate. The (B) component includes an amine terminated polyoxyalkylene polyol and an amine terminated aliphatic chain extender.
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: April 2, 1996
    Assignee: Huntsman Corporation
    Inventor: Dudley J. Primeaux, II
  • Patent number: 5480955
    Abstract: An aliphatic spray polyurea elastomer is disclosed. The elastomer comprises an (A) and (B) component. The (A) component includes an aliphatic isocyanate. The (B) component includes an amine terminated polyoxyalkylene polyol and an amine terminated aliphatic chain extender.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: January 2, 1996
    Assignee: Huntsman Corporation
    Inventor: Dudley J. Primeaux, II
  • Patent number: 5351468
    Abstract: A mower attachment for selectable side delivery of cut forage crops using a conveyor belt system incorporated in the attachment that is mounted behind the mower in a straddle fashion with at least one shock absorber interconnecting the attachment with the mower to limit vertical separation when traveling over rough ground. The attachment also including a hinged baffle to direct cuttings to the conveyor belt. With the baffle in an open position a portion of the cuttings fall on the conveyor belt and the remainder fall on the ground. Closing the baffle against the conveyor belt causes all cuttings to fall on the baffle.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: October 4, 1994
    Inventor: Joel Pominville
  • Patent number: 5343788
    Abstract: Apparatus for an automatic bar feeder is given which provides fluid to the space between the barstock and guide tube having a pump integral to the piston pusher to control pressure on the barstock being fed to the machine tool.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: September 6, 1994
    Assignee: Spego, Inc.
    Inventor: Henry E. Goforth
  • Patent number: 5333524
    Abstract: A pressure stabilizing apparatus is given which is capable of storing and supplying the volume of hydraulic fluid needed for rapid advances as well as accepting displaced hydraulic fluid required for rapid retractions in a barfeed apparatus. This pressure stabilizing apparatus or surge-accumulator device demonstrates the advantage of eliminating excessive force, which could damage the headstock, cause increased vibration and noise, and also prevents loss of contact with the bar end, all of which limit the speed of the spindle, and reduce productivity.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: August 2, 1994
    Assignee: Spego, Inc.
    Inventor: Henry E. Goforth
  • Patent number: 5332402
    Abstract: A cardiac valve implanted within the heart is given where a expansible valve maintained in a collapsed form by cold temperature is percutaneously inserted along a releasable guide wire in a cooled sheath and when positioned is expanded by withdrawing the cold temperature.
    Type: Grant
    Filed: May 12, 1992
    Date of Patent: July 26, 1994
    Inventor: George P. Teitelbaum
  • Patent number: 5112835
    Abstract: 6-substitutted acyclopyrimidine nucleoside derivatives represented by the following general formula I: ##STR1## wherein R.sup.1 represents a hydrogen or halogen atom or a group of alkyl, alkenyl, alkynyl, alkylcarbonyl, arylcarbonyl, arylcarbonylalkyl, arylthio or aralkyl; R.sup.2 represents a group of arylthio, alkylthio, cycloalkylthio, aryl sulfoxide, alkyl sulfoxide, cycloalkyl sulfoxide, alkenyl, alkynyl, aralkyl, arylcarbonyl, arylcarbonylalkyl or aryloxy; R.sup.3 represents a hydroxyalkyl group of which alkyl portion may contain an oxygen atom; X represents an oxygen or sulfur atom or amino group; Y represents an oxygen or sulfur atom; and A represents .dbd.N-- or --NH-- or pharmaceutically acceptable salts thereof, processes for their preparation and antiviral agents containing them as active ingredients.
    Type: Grant
    Filed: November 21, 1989
    Date of Patent: May 12, 1992
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Tadashi Miyasaka, Hiromichi Tanaka, Erik D. A. De Clercq, Masanori Baba, Richard T. Walker, Masaru Ubasawa
  • Patent number: 4503125
    Abstract: A protective overcoating is disclosed for a magnetic alloy thin-film recording disc that includes a magnetic alloy film formed on a disc-shaped substrate or coated substrate. The protective overcoating is formed by first sputtering onto the magnetic medium an interfacial layer of titanium, and then sputtering onto the titanium a layer of carbon. The sputtered carbon provides wear-resisting lubricity, while the titanium interface promotes the adhesion of the sputtered carbon to the magnetic medium of the recording disc.
    Type: Grant
    Filed: June 5, 1981
    Date of Patent: March 5, 1985
    Assignee: Xebec, Inc.
    Inventors: Carl W. Nelson, Michael B. Vye
  • Patent number: 4251040
    Abstract: Wind driven apparatus for the production of power at a ground location includes an aerodynamic lift generating vehicle capable of maintaining a stable airborne orientation, a tether linking the vehicle to a ground location, mechanical power generating equipment carried by the vehicle and responsive to relative motion between the air and the vehicle, apparatus for converting the generated power to reciprocating motion and structure for transmitting the reciprocating motion along the tether to the ground.
    Type: Grant
    Filed: December 11, 1978
    Date of Patent: February 17, 1981
    Inventor: Miles L. Loyd
  • Patent number: 4176818
    Abstract: A load-lifting and centering device is given whereby a load device in the form of a rack supported by legs is capable of self-centering during a lifting procedure whereby the same is centered laterally, longitudinally, and in a level position, and finally locking into place so that the portable rack and load are firmly connected to a vehicle while in transit.
    Type: Grant
    Filed: March 10, 1978
    Date of Patent: December 4, 1979
    Inventor: Edwin H. Roxby
  • Patent number: 4051077
    Abstract: An imaging technique and composition for developing electrostatographic latent images is given whereby a developer composition is employed comprising toner, a substantially smearless polymeric additive, and an abrasive material.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: September 27, 1977
    Assignee: Xerox Corporation
    Inventor: Donald J. Fisher
  • Patent number: 4040827
    Abstract: An imaging method is given whereby a latent electrostatographic image is developed by a developer containing liquid developer dispensing roll having excellent dimensional stability and resiliency having a thin, hard surface carrying the liquid developer on a resilient shell supported by a hard metal shaft.
    Type: Grant
    Filed: October 29, 1975
    Date of Patent: August 9, 1977
    Assignee: Xerox Corporation
    Inventors: Ralph A. Hamaker, George Phillip Carr
  • Patent number: 4002570
    Abstract: An electrophotographic developer composition is provided with a lubricating component comprising particulate, cross-linked polyvinylidene fluoride. The polyvinylidene fluoride is cross-linked by exposure to a small dosage of high energy radiation.
    Type: Grant
    Filed: December 26, 1973
    Date of Patent: January 11, 1977
    Assignee: Xerox Corporation
    Inventors: Nero R. Lindblad, James M. Pearson
  • Patent number: 3999119
    Abstract: Toner concentration of an electrostatic developer is measured by disposing the developer between two electrodes and agitating the developer to produce electronic noise as a result of triboelectrification and measuring and determining from the generated noise the concentration of the developer.
    Type: Grant
    Filed: March 26, 1975
    Date of Patent: December 21, 1976
    Assignee: Xerox Corporation
    Inventor: Jan Bares
  • Patent number: 3983045
    Abstract: A developer composition comprising (1) electroscopic toner particles (2) a friction-reducing material of a hardness less than said toner and having greater fricton-reducing characteristics than said toner material, and (3) a finely divided nonsmearable abrasive material of a hardness greater than said friction-reducing and toner materials. An imaging and development process utilizing the above-identified composition including the step of maintaining the buildup of friction-reducing material on an imaging surface in the submicron range without completely removing or preventing said buildup, by the combined action of a cleaning force wiping at least any residual developed image from at least a portion of said imaging surface.
    Type: Grant
    Filed: February 19, 1974
    Date of Patent: September 28, 1976
    Assignee: Xerox Corporation
    Inventors: Don B. Jugle, Charles J. Levine
  • Patent number: 3973843
    Abstract: An improved electrostatographic process wherein the imaging surface of the imaging member is treated with a lubricating effective amount of a compound selected from the group consisting of ortho-, meta-, para-phthalic acid, their corresponding metal or ammonium salts, and mixtures thereof. Controlled treatment of the imaging surfaces of the imaging member with the above compound(s) facilitates transfer of the developed image from the imaging member to a receiving sheet and removal of toner residues from the imaging surface upon cleaning. The imaging member element of the apparatus used in carrying out this process is covered with a thin film of lubricant over substantially all of its imaging surface thereby greatly improving toner transfer and removal.
    Type: Grant
    Filed: August 3, 1972
    Date of Patent: August 10, 1976
    Assignee: Xerox Corporation
    Inventors: Nero R. Lindblad, Gordon E. Johnson, James H. Sharp
  • Patent number: D251919
    Type: Grant
    Filed: August 1, 1977
    Date of Patent: May 22, 1979
    Inventor: Clark R. Fuqua
  • Patent number: D255590
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: June 24, 1980
    Inventors: Janet S. Berling, Alice J. Parr, Everett Berling, Edward Parr