Patents Represented by Law Firm Fidelman, Wolffe & Leitner
  • Patent number: 3941678
    Abstract: Apparatus for electrophoretic analysis of ions or like electrically charged particles, wherein the potential gradients of the different kinds of ions contained in a liquid column formed in an electrophoretic capillary tube are detected and the ratio between potential gradient of a selected one of said different kinds of ions and that of each of the other kinds of ions is calculated to obtain a value relating to the mobility of each of said different kinds of ions.
    Type: Grant
    Filed: February 20, 1975
    Date of Patent: March 2, 1976
    Assignee: Shimadzu Seisakusho Ltd.
    Inventor: Junichi Akiyama
  • Patent number: 3938292
    Abstract: A process for the production of reinforced concrete walls in trenches involving preparing a trench of at least unit length, placing a reinforcing cage in the trench, fixing further reinforcing so that it will extend past the end of the unit, placing means to prevent the concrete from completely covering the further reinforcing and pouring the concrete.
    Type: Grant
    Filed: June 29, 1971
    Date of Patent: February 17, 1976
    Assignee: Takenaka Komuten Company, Ltd.
    Inventors: Takato Kawasaki, Yuko Ikuta
  • Patent number: 3938364
    Abstract: A device for preparing lengths of material used for circuit board wrapping posts characterized by two pairs of swaging members which act to narrow adjacent cross-sections of the length of material down to a truncated pyramid form suitable for severing and for wire wrapping requirements.
    Type: Grant
    Filed: August 13, 1974
    Date of Patent: February 17, 1976
    Assignee: Universal Instruments Corporation
    Inventors: Phillip Anthony Ragard, Keith Alan Young
  • Patent number: 3935777
    Abstract: A portable cutting device is provided which comprises a table having first and second frame sections maintained in parallel spaced apart relationship by a plurality of attaching members extending between said first frame section and said second frame section, each of said first and said second frame sections having a longitudinally extending assembly mounted along an upper edge thereof, said longitudinal assemblies having a plurality of spaced apart transverse assemblies mounted thereon and extending substantially perpendicularly therebetween; guide means having a length sufficient to traverse a diagonal of said table and having sufficient rigidity to resist bending under stress and cutting means coacting with said guide to permit said cutting means to transverse a substantial portion of the length of said guide.
    Type: Grant
    Filed: June 13, 1974
    Date of Patent: February 3, 1976
    Inventor: Alvin Lee Bassett
  • Patent number: 3935583
    Abstract: A method and apparatus for producing a composite microfiche including a first emulsion bearing lamina on which one or more permanent data image frames are located and a second emulsion bearing lamina on which one or more updating data image frames are located, wherein the image or images on the first lamina are inverted and in different planar positions with respect to the image or images on the second lamina such that when the emulsion on the first lamina is superimposed on the emulsion on the second lamina, the laminae can be read together as one microfiche, the images appearing in the different planar positions in a substantially common focal plane.A three-reflective surface microfiche image inverter is also provided.
    Type: Grant
    Filed: March 22, 1974
    Date of Patent: January 27, 1976
    Inventor: Harry A. H. Spence-Bate
  • Patent number: 3935194
    Abstract: A process for separating hecogenin-tigogenin mixtures which involves acetylating the mixed genins, then solvent recrystallization separation of the mixed genin acetates, crystallizing out hecogenin acetate from a non-polar solvent, tigogenin acetate from a polar solvent. A sequential sequence is contemplated to first recover the predominant genin, then the less-predominant genin.Preferred source materials are crude 5-25% sapogenin content acid hydrolyzates of Agave leaf juice. Specifically preferred is the acid hydrolyzate from fresh Agave leaf juice obtained prior to decortication.
    Type: Grant
    Filed: January 22, 1974
    Date of Patent: January 27, 1976
    Assignee: Omni Research Incorporated
    Inventor: Bjarte Loken
  • Patent number: 3930300
    Abstract: A junction field effect transistor having a "V" shaped upper gate, dividing said planar source and drain regions, formed by etching a (100) crystal oriented semiconductor material of one conductivity type and diffusing with material of opposite conductivity type.
    Type: Grant
    Filed: April 4, 1973
    Date of Patent: January 6, 1976
    Assignee: Harris Corporation
    Inventor: Hugh Crawford Nicolay