Patents by Inventor Laurence E. Jones

Laurence E. Jones 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).

  • Amorphous precipitated silica
    Patent number: 5935543
    Abstract: Amorphous precipitated silica which may be used to form battery separators of very low specific resistance is characterized by (a) a CTAB surface area in the range of from 140 to 185 m.sup.2 /g; (b) a DBP oil absorption in the range of from 210 to 310 cm.sup.3 /100 g; (c) a mean ultimate particle size in the range of from 10 to 18 nm; (d) a total intruded volume in the range of from 2.6 to 4 cm.sup.3 /g; and (e) an intruded volume in the range of from 0.9 to 2 cm.sup.3 /g for pores having diameters in the range of from 20 to 100 nm.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: August 10, 1999
    Assignee: PPG Industries Ohio, Inc.
    Inventors: James L. Boyer, Thomas G. Krivak, Robert C. Wang, Laurence E. Jones
  • Amorphous precipitated silica characterized by high dispersion in cured organic rubber compositions
    Patent number: 5888467
    Abstract: Amorphous precipitated silica is characterized by a standard white area of less than 0.8 percent. The low standard white area is a characteristic of the silica which is indicative of high (i.e., very effective) dispersion when the silica is incorporated into organic rubber compositions which are cured.Cured organic rubber compositions comprising amorphous precipitated silica exhibit low white areas which indicate high dispersion of the silica in the compositions.
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: March 30, 1999
    Assignee: PPG Industries, Inc.
    Inventors: Harold E. Swift, Thomas G. Krivak, Laurence E. Jones
  • Amorphous precipitated silica abrasive
    Patent number: 5747003
    Abstract: A statistically large population of particles of amorphous precipitated silica comprising pigmentary phase particles and glassy phase particles and having a glassy phase fraction in the range of from 0.3 to 30 area percent is useful as an abrasive for dentifrice compositions, especially toothpaste.
    Type: Grant
    Filed: March 22, 1995
    Date of Patent: May 5, 1998
    Assignee: PPG Industries, Inc.
    Inventors: Shantilal M. Mohnot, Harold E. Swift, Thomas G. Krivak, Robert H. Fear, Laura M. Randall, Laurence E. Jones
  • Amorphous precipitated silica characterized by high dispersion in cured organic rubber compositions
    Patent number: 5739197
    Abstract: Amorphous precipitated silica is characterized by a standard white area of less than 0.8 percent. The low standard white area is a characteristic of the silica which is indicative of high (i.e., very effective) dispersion when the silica is incorporated into organic rubber compositions which are cured.Cured organic rubber compositions comprising amorphous precipitated silica exhibit low white areas which indicate high dispersion of the silica in the compositions.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: April 14, 1998
    Assignee: PPG Industries, Inc.
    Inventors: Harold E. Swift, Thomas G. Krivak, Laurence E. Jones
  • Article having a corrosion inhibiting coating
    Patent number: 4849297
    Abstract: Corrosion inhibiting calcium-containing amorphous precipitated silica is described. The silica is prepared by admixing simultaneously in a reactor aqueous alkali metal silicate, e.g., sodium silicate, acidifying agent, e.g., hydrochloric acid, and a water-soluble source of calcium, e.g., calcium chloride. The product contains from 6 to 9 weight percent calcium (as CaO). The silica product may be incorporated into a coating composition used for corrodible metallic surfaces.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: July 18, 1989
    Assignee: PPG Industries, Inc.
    Inventors: J. Douglas Mansell, Laurence E. Jones, Harlan B. Johnson, Thomas G. Krivak, Dennis W. Carson
  • Corrosion inhibiting pigment
    Patent number: 4837253
    Abstract: Corrosion inhibiting calcium-containing amorphous precipitated silica is described. The silica is prepared by admixing simultaneously in a reactor aqueous alkali metal silicate, e.g., sodium silicate, acidifying agent, e.g., hydrochloric acid, and a water-soluble source of calcium, e.g., calcium chloride. The product contains from 6 to 9 weight percent calcium (as CaO). The silica product may be incorporated into a coating composition used for corrodible metallic surfaces.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: June 6, 1989
    Assignee: PPG Industries, Inc.
    Inventors: J. Douglas Mansell, Laurence E. Jones, Harlan B. Johnson, Thomas G. Krivak, Dennis W. Carson
  • Flexible valve
    Patent number: 4756506
    Abstract: A rotor is provided for use in combination with a stator and sleeve to function as a valve attached to an actuator. The rotor is comprised of a rotor body containing the drive section with the necessary elements to turn the rotor within the stator and sleeve, and a rotor stem with parts to act with complementary parts on the sleeve to form variable orifices that function as the valve. The rotor body is connected to the rotor stem by a flexible joint which includes a contoured surface to compensate for misalignments in the system.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: July 12, 1988
    Assignee: Barber-Colman Company
    Inventors: Elwood J. Meyers, Laurence E. Jones
  • Rotary electrically actuated device
    Patent number: 4647006
    Abstract: A rotor is provided for use in combination with a valve and sleeve to function as a valve attached to an actuator. The rotor is comprised of a rotor body containing the drive section with the necessary elements to turn the rotor within the sleeve, and a rotor stem with ports to coact with complementary ports in the sleeve to form variable orifices to control fluid flow, and a flexible means for connecting the rotor stem to the rotor body.
    Type: Grant
    Filed: May 3, 1985
    Date of Patent: March 3, 1987
    Assignee: Barber-Colman Company
    Inventors: Thomas A. Glynn, Laurence E. Jones
  • Soft-settling fluosilicate-treated silica flatting agent
    Patent number: 4095994
    Abstract: Finely divided, fluosilicate-treated silica, such as silica flatting agent for use in coating formulations, is prepared by blending in a dry, finely divided state, silica and divalent metal fluosilicate, notably magnesium fluosilicate. In a preferred embodiment, dry pellets of amorphous, precipitated silica and dry magnesium fluosilicate are milled together to produce the fluosilicate-treated flatting agent. In another embodiment, an aqueous solution of magnesium fluosilicate is applied to silica pellets which are then milled.
    Type: Grant
    Filed: January 7, 1977
    Date of Patent: June 20, 1978
    Assignee: PPG Industries, Inc.
    Inventors: Roger A. Crawford, Laurence E. Jones