Patents by Inventor Mark Leo

Mark Leo 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).

  • Publication number: 20040132849
    Abstract: The present invention relates to a method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of water as a blowing agent, a cell stabilizer, a gelling catalyst, and a tertiary amino alkyl amide catalyst composition.
    Type: Application
    Filed: December 2, 2003
    Publication date: July 8, 2004
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Juan Jesus Burdeniuc, Mark Leo Listemann
  • Patent number: 6759447
    Abstract: The present invention relates to a method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of water as a blowing agent, a cell stabilizer, a gelling catalyst, and a tertiary amino alkyl amide catalyst composition. The catalyst composition is represented by the formula I: wherein R1, R2, R3, R4, R5, R6, A, and n are as defined herein.
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: July 6, 2004
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Juan Jesus Burdeniuc, Mark Leo Listemann
  • Publication number: 20030093070
    Abstract: An apparatus and method for use in performing ablation of organs and other tissues includes a radio frequency generator which provides a radio frequency signal to ablation electrodes. The power level of the radio frequency signal is determined based on the subject area of ablation. The radio frequency signal is coupled with the ablation electrodes through a transformation circuit. The transformation circuit includes a high impedance transformation circuit and a low impedance transformation circuit. The high or low impedance transformation circuit is selected based on the impedance of the ablation electrodes in contact with the subject tissue. Vacuum level, impedance level, resistance level, and time are measured during ablation. If these parameters exceed determinable limits the ablation procedure is terminated.
    Type: Application
    Filed: December 23, 2002
    Publication date: May 15, 2003
    Inventors: Bruno Strul, Csaba Truckai, Russel Mahlon Sampson, Mark Leo Kane
  • Patent number: 6508815
    Abstract: An apparatus and method for use in performing ablation of organs and other tissues includes a radio frequency generator which provides a radio frequency signal to ablation electrodes. The power level of the radio frequency signal is determined based on the subject area of ablation. The radio frequency signal is coupled with the ablation electrodes through a transformation circuit. The transformation circuit includes a high impedance transformation circuit and a low impedance transformation circuit. The high or low impedance transformation circuit is selected based on the impedance of the ablation electrodes in contact with the subject tissue. Vacuum level, impedance level, resistance level, and time are measured during ablation. If these parameters exceed determinable limits the ablation procedure is terminated.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: January 21, 2003
    Assignee: Novacept
    Inventors: Bruno Strul, Csaba Truckai, Russel Mahlon Sampson, Mark Leo Kane
  • Patent number: 6380274
    Abstract: A composition having the formula: wherein R is a linear alkyl, branched alkyl, cycloalkyl, polycyclic alkyl, alkylaminoalkyl, or alkyloxyalkyl group having 1 to 20 carbon atoms and at least one primary, secondary, or tertiary amino functional group. The composition is effective as a catalyst in the production of polyurethanes.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: April 30, 2002
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ning Chen, Richard Paul Underwood, Mark Leo Listemann
  • Patent number: 6354380
    Abstract: An apparatus for guiding wireline into a well bore comprising an insert bowl, the insert bowl having a substantially vertical groove formed in an interior surface thereof. A rotation means is preferably provided on the insert bowl, the rotation means configured and positioned to rotate against a wireline and maintain the wireline substantially in the groove when the insert bowl is positioned in a rotary table of a drilling platform, to thereby prevent damage to the wireline during wireline and drilling operations. The rotation means preferably comprises a support member and a wheel rotatably disposed in the support member, the support member being attached to a top of the insert bowl above the groove. The wheel is preferably configured as a sheave having a concave rim.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: March 12, 2002
    Inventors: Mark Leo Becnel, Jason Michael Becnel
  • Patent number: 6313346
    Abstract: A composition having the formula: wherein R is a linear alkyl, branched alkyl, cycloalkyl, polycyclic alkyl, alkylaminoalkyl, or alkyloxyalkyl group having 1 to 20 carbon atoms and at least one primary, secondary, or tertiary amino functional group. The composition is effective as a catalyst in the production of polyurethanes.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: November 6, 2001
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ning Chen, Richard Paul Underwood, Mark Leo Listemann
  • Patent number: 6232356
    Abstract: The present invention provides a reactive catalyst composition for making a water blown flexible polyurethane foam. The catalyst composition comprises a tertiary amino alkyl urea and/or bis(tertiary amino alkyl) urea in combination with either a gelling catalyst or blowing catalyst. The use of such catalyst composition improves the physical properties of the polyurethane foam.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: May 15, 2001
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Lisa Ann Mercando, Mark Leo Listemann, Michael John Kimock
  • Patent number: 6201033
    Abstract: The present invention provides a reactive catalyst composition for making a water blown flexible polyurethane foam. The catalyst composition comprises a tertiary amino alkyl urea and/or bis(tertiary amino alkyl) urea in combination with either a tertiary amine gelling catalyst or a tertiary amine blowing catalyst. The use of such catalyst composition improves the physical properties of the polyurethane foam.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: March 13, 2001
    Assignee: Air Products and Chemical, Inc.
    Inventors: Lisa Ann Mercando, Mark Leo Listemann, Michael John Kimock
  • Patent number: 6156814
    Abstract: The use of 3-[3-(dimethylamino)propyl]-propionamide (Formula I) and 3,3'-{[3-(dimethylamino)propyl]imino}bis-propanamide (Formula II) as catalysts in the production of polyurethanes.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: December 5, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ning Chen, Richard Van Court Carr, Mark Leo Listemann, Richard Paul Underwood
  • Patent number: 6153659
    Abstract: 3-{N-[2-(N',N'-dimethylamino ethoxy)ethyl]-N-methylamino}propionamide is a new compound which is useful as a catalyst in the production of polyurethane foams.
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: November 28, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Richard Van Court Carr, Ning Chen, Mark Leo Listemann, Richard Paul Underwood
  • Patent number: 6147185
    Abstract: New compounds, represented by the formulae I and II, ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3, are independently C.sub.3 or C.sub.4, substituted or unsubstituted alkylene groups, are useful for catalyzing the reaction between an organic polyisocyanate and a compound containing a reactive hydrogen to form polyurethanes.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: November 14, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Jose Guadalupe Santiesteban, Roy Daniel Bastian, John Nelson Armor, Mark Leo Listemann, Lisa Ann Mercando
  • Patent number: 6051527
    Abstract: A method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, a cell stabilizer and a catalyst composition consisting essentially of a compound having the following formula I: ##STR1## where R.sup.1 is hydrogen or a C1-C4 linear or branched alkyl, hydroxyalkyl or aminoalkyl group;R.sup.2 is hydrogen or a C1-C6 linear or branched alkyl, hydroxyalkyl or aminoalkyl group; andR.sup.3 and R.sup.4 are independently hydrogen or a C1-C10 linear or branched alkyl, hydroxyalkyl or aminoalkyl group which may contain ether functionality.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: April 18, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ann Coates Lescher Savoca, Richard Paul Underwood, Richard Van Court Carr, James Stephen Emerick, Mark Leo Listemann
  • Patent number: 6037496
    Abstract: 3-{N-[2-(N',N'-dimethylamino ethoxy)ethyl]-N-methylamino}propionamide is a new compound which is useful as a catalyst in the production of polyurethane foams.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: March 14, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Richard Van Court Carr, Ning Chen, Mark Leo Listemann, Richard Paul Underwood
  • Patent number: 5902835
    Abstract: An improved method of preparing polyurethane foam by reacting an organic polyisocyanate with a polyol in the presence of water and a combination of a gelling catalyst and a blowing catalyst, in which the blowing catalyst is a compound represented by the following formulae:?M(L.sup.1)(L.sup.2)(L.sup.3)(L.sup.4)!.sub.n?M(L.sup.1)(L.sup.2)(L.sup.3)!.sub.n?M(L.sup.1)(L.sup.2)!.sub.n?M(L.sup.1)!.sub.nwherein M is titanium, zirconium, or hafnium; n ranges from 1 to 20; and each of L.sup.1, L.sup.2, L.sup.3, and L.sup.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: May 11, 1999
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ingrid Kristine Meier, Mark Leo Listemann, Michael John Kimock
  • Patent number: 5874483
    Abstract: A method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, a cell stabilizer and a catalyst composition consisting essentially of a compound having the following formula I: ##STR1## where R.sup.1 is hydrogen or a C1-C4 linear or branched alkyl, hydroxyalkyl or aminoalkyl group;R.sup.2 is hydrogen or a C1-C6 linear or branched alkyl, hydroxyalkyl or aminoalkyl group; andR.sup.3 and R.sup.4 are independently hydrogen or a C1-C10 linear or branched alkyl, hydroxyalkyl or aminoalkyl group which may contain ether functionality.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: February 23, 1999
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ann Coates Lescher Savoca, Richard Paul Underwood, Richard Van Court Carr, James Stephen Emerick, Mark Leo Listemann
  • Patent number: 5859079
    Abstract: A polyurethane catalyst composition comprises N,N'-bis(3-dimethylaminopropyl) urea and 3-dimethylaminopropyl urea in a ratio that can be varied to systematically control flowability, airflow, and force-to-crush physical properties for flexible polyurethane foam to enhance processibility. Increasing the N,N'-bis(3-dimethylaminopropyl) urea to 3-dimethylaminopropyl urea ratio increases the airflow and decreases the force-to-crush values of the foam whereas decreasing the N,N'-bis(3-dimethylaminopropyl) urea to 3-dimethylaminopropyl urea ratio improves the flowability of the foam.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: January 12, 1999
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Lisa Ann Mercando, Michael John Kimock, Michael Louie, Mark Leo Listemann
  • Patent number: 5824711
    Abstract: A method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, a cell stabilizer and a catalyst composition consisting essentially of the compound represented by the following formula I or II, or any blend of I and II.
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: October 20, 1998
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Michael John Kimock, Mark Leo Listemann
  • Patent number: 5756557
    Abstract: A method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, a cell stabilizer and a catalyst composition comprising a compound represented by the following formula I or II, or any blend of compounds I and II.
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: May 26, 1998
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Michael John Kimock, Mark Leo Listemann
  • Patent number: RE38201
    Abstract: The use of 3-[3-(dimethylamino)propyl]-propionamide (Formula I) and 3,3′-{[3-(dimethylamino)propyl]imino}bis-propanamide (Formula II) as catalysts in the production of polyurethanes. The use of 3-{[3-(dimethylamino)propyl]amino}-propionamide (Formula I) and 3,3′-{[3-(dimethylamino)propyl]imino}bis-propanamide (Formula II) as catalysts in the production of polyurethanes.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: July 22, 2003
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ning Chen, Richard Van Court Carr, Mark Leo Listemann, Richard Paul Underwood