Patents Assigned to Master Chemical Corporation
  • Patent number: 11396708
    Abstract: A water soluble metalworking concentrate is a combination of one or more amines; one or more ferrous corrosion inhibitors; one or more phosphate esters; one or more ether carboxylates; a ricinoleic acid condensate; one or more lubricating agents; deionized water and, optionally, one or more non-ferrous corrosion inhibitors. In use, the concentrate is diluted to a concentration of approximately 5% to approximately 10%. In use, the metalworking fluid exhibits excellent lubricity, low foam generation, emulsion stability, protection of ferrous and non-ferrous metals, biostatic stability and environmental compatibility.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: July 26, 2022
    Assignee: Master Chemical Corporation
    Inventors: Joseph Alan Snyder, Chandrashekhar Sadanand Khadilkar
  • Patent number: 6958314
    Abstract: A petro-chemical free nonionic surfactant is prepared by the alkylation of an alkyl polyglucoside (APG). Under suitable alkylation reaction conditions, the surfactants are preferably prepared by the reaction of an APG with either alkyl halide or an alkyl tosylate. These surfactants are low foaming and exhibit excellent detergency.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: October 25, 2005
    Assignee: Master Chemical Corporation
    Inventor: David B. McCall
  • Patent number: 6860142
    Abstract: An automatic system for monitoring/controlling a variable of a machine or metalworking fluid system also achieves cleaning and optionally, a calibration check of the sensor of the variable. The system includes one or more sensors for variables such as pH, fluid concentration, conductivity, temperature and the like, a supply of a cleaning agent and associated valves and conduits for connecting the automatic system to a fluid to be measured. A cleaning cycle can be scheduled as necessary to clean and/or check calibration of the sensors and ensure accurate measurement of sensed variables. If desired, the data regarding the sensed variables may be utilized to perform corrective action in real time.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: March 1, 2005
    Assignee: Master Chemical Corporation
    Inventors: Stanley W. Seevers, Guy R. Hughes, Frank A. Robinson
  • Patent number: 6669747
    Abstract: A grinding wheel according to the present invention includes cubic boron nitride (cBN) or other abrasive particles such as diamond secured to a substrate by an electroplated, electroless plated or brazed layer of nickel, chrome or nickel or chrome based alloy, a first antioxidation layer of, for example, vapor deposited titanium aluminum nitride (TiAIN) and a second hard lubricant layer of, for example, vapor deposited molybdenum disulfide (MoS2), diamond graphite, tungsten carbide carbon, carbon nitride, titanium carbide carbon or titanium carbon nitride. The hard lubricant layer acts as a release agent and lubricant which reduces clogging of the wheel by lowering adhesion and facilitating the release of ground material from the wheel thereby providing improved grinding performance.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: December 30, 2003
    Assignee: Master Chemical Corporation
    Inventor: Stuart C. Salmon
  • Patent number: 4767982
    Abstract: A system and method of measuring the concentration of each component of a two component liquid by passing a microwave signal through a flowing liquid sample. A waveguide is used between a microwave source and detector, and a sample tube passes through the central portion of the wave guide.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: August 30, 1988
    Assignee: Master Chemical Corporation
    Inventors: H. Keith Florig, David A. Purta
  • Patent number: 4708539
    Abstract: A self-contained system for applying a viscous tapping fluid to a tapping tool at a machining work site independent of any other cutting fluid system. A supply tank, control cabinet and an air actuating nozzle are interconnected to supply the tapping fluid for a timed period initiated by a limit switch, NC signal or manual command for ready adaptation to equipment ranging from a machining center to dedicated tapping work stations.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: November 24, 1987
    Assignee: Master Chemical Corporation
    Inventor: James A. Threadgill
  • Patent number: 4652372
    Abstract: A liquid separator utilizing an endless belt for skimming extraction of oil from a liquid body and doctoring rollers for gathering the oil from both sides of the belt.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: March 24, 1987
    Assignee: Master Chemical Corporation
    Inventor: James A. Threadgill
  • Patent number: 4139464
    Abstract: An apparatus for clarifying especially a select portion of the slurry content of a material reducing machine sump, the apparatus having a chamber providing a space into which such select portion of the sump slurry content may flow into engagement with a filter, the liquid component thereof passing through the same and back to the sump, individual and opposite acting pneumatic and hydraulic pressure producing means for inducing the mentioned flow into the chamber and engagement with and through the filter and return to the sump.
    Type: Grant
    Filed: July 22, 1977
    Date of Patent: February 13, 1979
    Assignee: Master Chemical Corporation
    Inventor: Michael Coward