Patents by Inventor Mark A. Lawrence

Mark A. Lawrence 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).

  • Patent number: 7196156
    Abstract: A flexibilized resorcinolic novolak resin is prepared by reacting a phenolic compound, such as resorcinol, with an unsaturated dihydroxy, an unsaturated aldehyde, an aliphatic dialdehyde, or a mixture thereof. An aldehyde (different from the unsaturated aldehyde and the aliphatic dialdehyde) is either simultaneously or subsequently added to the reaction mixture. The flexibilized resorcinolic novolak resin can be used in an adhesive composition for enhancing the adhesion between tire cords and rubber for tire applications.
    Type: Grant
    Filed: December 12, 2003
    Date of Patent: March 27, 2007
    Assignee: Indspec Chemical Corporation
    Inventors: Raj B. Durairaj, Mark A. Lawrence
  • Patent number: 7074861
    Abstract: A modified resorcinol resin is prepared by reacting a phenolic compound (e.g., resorcinol) with an olefinically unsaturated compound (e.g., styrene) and two types of aldehyde: a formaldehyde and an alkyl aldehyde (e.g., butyraldehyde). The reaction is typically carried out in the presence of an acid catalyst. The resulting resin has a lower softening point and can be used as a methylene acceptor compound in a vulcanizable rubber composition.
    Type: Grant
    Filed: February 18, 2003
    Date of Patent: July 11, 2006
    Assignee: INDSPEC Chemical Corporation
    Inventors: Raj Durairaj, Mark A. Lawrence
  • Patent number: 6875807
    Abstract: A silane-modified phenolic resin is prepared by reacting a phenolic compound (e.g., resorcinol) with an aldehyde to produce a phenolic novolak resin. The phenolic novolak resin is further reacted with at least one silane compound to produce the silane-modified phenolic resin. The reaction is typically carried out in the presence of an acid or base catalyst. The resulting resin has a lower softening point and can be used as a methylene acceptor compound in a vulcanizable rubber composition.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: April 5, 2005
    Assignee: Indspec Chemical Corporation
    Inventors: Raj B. Durairaj, C. Michael Walkup, Mark A. Lawrence
  • Patent number: 6828383
    Abstract: A vulcanizable rubber composition comprises (a) a rubber component; (b) a methylene donor compound; and (c) a methylene acceptor comprising a blend of a high ortho-ortho bonded phenolic novolak resin and a resorcinolic resin. The resin blend can be made by a number of methods. For example, it can be prepared by first reacting one or more phenolic compounds represented by the following formula: where R is selected from the group consisting of H, an alkyl group chain of 1-16 carbon atoms and an aralkyl group of 8-12 carbon atoms with an aldehyde in the presence of an ortho directing catalyst and then combining a resorcinol-formaldehyde novolak resin to obtain a phenolic and resorcinolic novolak resin blend.
    Type: Grant
    Filed: February 18, 2003
    Date of Patent: December 7, 2004
    Assignee: Occidental Petroleum
    Inventors: Raj B. Durairaj, C. Michael Walkup, Mark A. Lawrence
  • Publication number: 20040241331
    Abstract: A silane-modified phenolic resin is prepared by reacting a phenolic compound (e.g., resorcinol) with an aldehyde to produce a phenolic novolak resin. The phenolic novolak resin is further reacted with at least one silane compound to produce the silane-modified phenolic resin. The reaction is typically carried out in the presence of an acid or base catalyst. The resulting resin has a lower softening point and can be used as a methylene acceptor compound in a vulcanizable rubber composition.
    Type: Application
    Filed: May 28, 2003
    Publication date: December 2, 2004
    Applicant: INDSPEC Chemical Corporation
    Inventors: Raj B. Durairaj, C. Michael Walkup, Mark A. Lawrence
  • Publication number: 20040162391
    Abstract: A modified resorcinol resin is prepared by reacting a phenolic compound (e.g., resorcinol) with an olefinically unsaturated compound (e.g., styrene) and two types of aldehyde: a formaldehyde and an alkyl aldehyde (e.g., butyraldehyde). The reaction is typically carried out in the presence of an acid catalyst. The resulting resin has a lower softening point and can be used as a methylene acceptor compound in a vulcanizable rubber composition.
    Type: Application
    Filed: February 18, 2003
    Publication date: August 19, 2004
    Applicant: INDSPEC Chemical Corporation
    Inventors: Raj Durairaj, Mark A. Lawrence
  • Publication number: 20040147712
    Abstract: A flexibilized resorcinolic novolak resin is prepared by reacting a phenolic compound, such as resorcinol, with an unsaturated dihydroxy, an unsaturated aldehyde, an aliphatic dialdehyde, or a mixture thereof. An aldehyde (different from the unsaturated aldehyde and the aliphatic dialdehyde) is either simultaneously or subsequently added to the reaction mixture. The flexibilized resorcinolic novolak resin can be used in an adhesive composition for enhancing the adhesion between tire cords and rubber for tire applications.
    Type: Application
    Filed: December 12, 2003
    Publication date: July 29, 2004
    Applicant: INDSPEC Chemical Corporation
    Inventors: Raj B. Durairaj, Mark A. Lawrence
  • Publication number: 20040130740
    Abstract: In a network facilitating print functions, a means for rendering a print job intended for a remote printer on a client computer using stored administrative settings is provided. Transparently to the client's applications, the client computer keeps the stored remote printer's administrative settings synchronized with those stored on the print server. Using the stored administrative settings, the client renders the print job to a native printer language directly cognizable by the printer before sending this rendered file to the print server for forwarding to the printer. By queuing these remote print jobs, the online status of the respective print server is also transparent to the client's applications, facilitating off-line printing.
    Type: Application
    Filed: January 6, 2003
    Publication date: July 8, 2004
    Applicant: Microsoft Corporation
    Inventors: Mark A. Lawrence, Steven Kiraly
  • Publication number: 20040116592
    Abstract: A vulcanizable rubber composition comprises (a) a rubber component; (b) a methylene donor compound; and (c) a methylene acceptor comprising a blend of a high ortho-ortho bonded phenolic novolak resin and a resorcinolic resin. The resin blend can be made by a number of methods.
    Type: Application
    Filed: February 18, 2003
    Publication date: June 17, 2004
    Applicant: INDSPEC Chemical Corporation
    Inventors: Raj Durairaj, C. Michael Walkup, Mark A. Lawrence
  • Patent number: 6605670
    Abstract: Methods of making low molecular weight methylene acceptors are provided. The methylene acceptors are prepared by reacting a polyhydric phenol with an aromatic olefinic compound in the presence of an acid catalyst, and then further reacting the products of the first reaction with an N-methylol lactam derivative. Derivatives made by the above method, as well as rubber compositions using these derivatives are also provided.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: August 12, 2003
    Assignee: Indspec Chemical Corporation
    Inventors: Raj B. Durairaj, Mark A. Lawrence
  • Patent number: 4669766
    Abstract: A door holding mechanism (10) is provided for holding a door (14) in an open position adjacent a wall (12). The door holding mechanism (10) includes a cylindrical housing (18). A magnetic coil (30) is mounted within the cylindrical housing (18). Structure (40, 50, 60, 64) is provided for pivotally mounting the cylindrical housing (18) to the wall (12). A door plate (68) is mounted on the door (14) which is magnetically attracted to the cylindrical housing (18) to hold the door (14) in an open position.
    Type: Grant
    Filed: September 11, 1986
    Date of Patent: June 2, 1987
    Assignee: Hanchett Entry Systems, Inc.
    Inventors: Leland J. Hanchett, Jr., Mark A. Lawrence
  • Patent number: 4626010
    Abstract: A door release mechanism (10) for a door (24) having a latch bolt (22) is provided. The door release mechanism (10) includes a strike block (12) adapted to receive the latch bolt (22). A ramped surface (26) is provided within the strike block (12) for urging the latch bolt (22) into the door (24) to thereby open the door (24). Structure (30, 42, 48) is further provided within strike block (12) for preventing the latch bolt (22) from being withdrawn within the door (24) for maintaining the door (24) closed.
    Type: Grant
    Filed: January 28, 1986
    Date of Patent: December 2, 1986
    Assignee: Hanchett Entry Systems, Inc.
    Inventors: Leland J. Hanchett, Jr., Mark A. Lawrence
  • Patent number: 4595220
    Abstract: A door lock (10) includes a strike case (18) adapted to receive a dead bolt (14). A rotatable keeper (20) is rotatable between an open and closed position for opening and closing the strike case (18). An abutment member (30) is connected to the rotatable keeper (20) and is selectively rotatable with the rotatable keeper (20). A sensing arm (34) is connected to the strike case (18) for sensing the presence of the dead bolt (14) in the strike case (18). The sensing arm (34) selectively disengages the abutment member (30) for allowing the abutment member (30) to rotate with the rotatable keeper (20) if the dead bolt (14) is detected within the strike case (18).
    Type: Grant
    Filed: February 27, 1984
    Date of Patent: June 17, 1986
    Assignee: Hanchett Entry Systems, Inc.
    Inventors: Leland J. Hanchett, Jr., Mark A. Lawrence