Patents by Inventor William Fries

William Fries has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Removal of free fatty acids from water immiscible fluids via ion exchange resins
    Patent number: 4125550
    Abstract: Certain anion exchange resins are used for the removal of free fatty acids from water immiscible fluids. This anion exchange system can function without the necessity of organic solvents and with the resin in a hydrous state.
    Type: Grant
    Filed: September 30, 1976
    Date of Patent: November 14, 1978
    Assignee: Rohm and Haas Company
    Inventors: Karl A. Schoenenberger, William Fries
  • Sugar decolorizing quaternary ammonium acrylamide resins
    Patent number: 4082564
    Abstract: Crosslinked macroreticular and gel-type quaternary ammonium acrylamide anion exchange resins which possess a potential for hydrophobic bonding and thereby display a high affinity for slightly ionized or unionized refractory color bodies as well as for the more easily removed color bodies in aqueous sugar solutions are provided.
    Type: Grant
    Filed: March 23, 1977
    Date of Patent: April 4, 1978
    Assignee: Rohm and Haas Company
    Inventors: William Fries, Silvia Napierski
  • Sugar decolorizing quaternary ammonium acrylamide resins
    Patent number: 4082701
    Abstract: Crosslinked macroreticular and gel-type quaternary ammonium acrylamide anion exchange resins which possess a potential for hydrophobic bonding and thereby display a high affinity for slightly ionized or unionized refractory color bodies as well as for the more easily removed color bodies in aqueous sugar solutions are provided.
    Type: Grant
    Filed: May 13, 1977
    Date of Patent: April 4, 1978
    Assignee: Rohm and Haas Company
    Inventors: William Fries, Silvia Napierski
  • Process for selective removal and recovery of cyanide values by ion exchange
    Patent number: 3984314
    Abstract: This invention relates to the purification of industrial effluents containing cyanide ions, and cyanide precursors like acetone-cyanohydrin. More particularly, the invention relates to the purification of such effluents by utilizing a complexing compound followed by treatment with an anion exchange resin and optionally cation exchange resin to remove the cyanide complexes. The cyanide values are recovered from the resin by acid regeneration.
    Type: Grant
    Filed: April 22, 1974
    Date of Patent: October 5, 1976
    Assignee: Rohm and Haas Company
    Inventor: William Fries
  • Shift registers
    Patent number: 3937984
    Abstract: A shift register stage comprises an MOS gating transistor having its drain and source electrodes connected respectively to an input node receiving pulses to be shifted through the stage and a gate electrode of an MOS amplifying transistor. A capacitor is connected between the gate and source electrodes of the amplifying transistor. The source electrode of the amplifying transistor constitutes the output of the stage and is connected to the drain electrode of a current source transistor having its source electrode connected to an earth line and its gate electrode connected to a reference potential. The gate electrode of the gating transistor is connected to receive a first series of clock pulses, and the drain electrode of the amplifying transistor is connected to receive another series of clock pulses in non-overlapping relation with the first series.
    Type: Grant
    Filed: October 7, 1974
    Date of Patent: February 10, 1976
    Assignee: Integrated Photomatrix Limited
    Inventor: Peter William Fry