Patents by Inventor Ralph Lessor

Ralph Lessor 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: 20190151600
    Abstract: A pharmaceutical product includes an inhalation anesthetic stored within an aluminum container. According to such a product, the interior of the aluminum container is provided with an inert lining comprising an epoxyphenolic resin, and the inhalation anesthetic is selected from the group consisting of sevoflurane, desflurane, isoflurane, enflurane, methoxyflurane and halothane.
    Type: Application
    Filed: January 18, 2019
    Publication date: May 23, 2019
    Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE SA
    Inventors: Ralph V. Rudzinski, Ralph a. Lessor
  • Publication number: 20110284418
    Abstract: A pharmaceutical product includes an inhalation anesthetic stored within an aluminum container. According to such a product, the interior of the aluminum container is provided with an inert lining comprising an epoxyphenolic resin, and the inhalation anesthetic is selected from the group consisting of sevoflurane, desflurane, isoflurane, enflurane, methoxyflurane and halothane.
    Type: Application
    Filed: August 2, 2011
    Publication date: November 24, 2011
    Applicant: BAXTER INTERNATIONAL INC.
    Inventors: Ralph V. Rudzinski, Ralph A. Lessor
  • Patent number: 8001961
    Abstract: A container for liquid inhalation anesthetics, more particularly, an aluminum container that is suitable for storing halogenated inhalation anesthetics is described.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: August 23, 2011
    Assignee: Baxter International Inc.
    Inventors: Ralph V. Rudzinski, Ralph A. Lessor
  • Patent number: 7999011
    Abstract: Provided is a method of treating a patient having a tissue that is subject to an ischemic event. The method is conducted by parenterally administering a formulation containing a halogenated volatile anesthetic in an amount effective to improve the tissue's resistance to or tolerance of the ischemic event. In preferred embodiment of the invention, the amount of the formulation administered to the patient is sub-anesthetic. The formulation can be administered prior to, concurrently with, or after the ischemic event. The method can be used, for example, for treatment of patients having myocardial or neuronal tissue that is subject to an ischemic event.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: August 16, 2011
    Assignee: Baxter International Inc.
    Inventors: Raul Trillo, Ralph A. Lessor, Satish Pejaver, Navneet Puri
  • Patent number: 7375254
    Abstract: Provided is a process of obtaining 1,1,1,3,3,3-hexafluoro-2-propanol (“HFIP”) from a composition comprising an HFIP hydrolyzable precursor. The HFIP hydrolyzable precursor is a compound, other than sevoflurane itself, that has an intact 1,1,1,3,3,3-hexafluoroisopropoxy moiety[(CF3)2CHO—], and contains one or more moieties susceptible to acidic hydrolysis, such that HFIP is released upon such treatment. The process is useful, among other things, for recovering HFIP from waste streams associated with the synthesis of the inhalation anesthetic, fluoromethyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl ether (“sevoflurane”). The process includes heating the composition with a strong protic acid to a temperature effective to hydrolyze at least some of the HFIP hydrolyzable precursor to HFIP, and then isolating the HFIP from the heated composition.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: May 20, 2008
    Assignee: Baxter International Inc.
    Inventors: Leonid A. Rozov, Ralph A. Lessor
  • Publication number: 20060293243
    Abstract: Stable, pharmaceutical compositions including a synthetic motilin-like peptide in a buffered solution are disclosed. The composition provides for a peptide that remains stable and substantially retains its initial potency during extended storage and after steam sterilization.
    Type: Application
    Filed: August 4, 2005
    Publication date: December 28, 2006
    Inventors: Navneet Puri, Satish Pejaver, Varun Sethi, Ralph Lessor
  • Publication number: 20060287243
    Abstract: Stable, pharmaceutical compositions including a synthetic motilin-like peptide in a buffered aqueous solution or in an unbuffered aqueous solution are disclosed. The composition provides for a peptide that remains stable and substantially retains its initial potency during extended storage and after steam sterilization.
    Type: Application
    Filed: August 4, 2005
    Publication date: December 21, 2006
    Inventors: Navneet Puri, Satish Pejaver, Varun Sethi, Ralph Lessor
  • Patent number: 6987204
    Abstract: Provided is a process of obtaining 1,1,1,3,3,3-hexafluoro-2-propanol (“HFIP”) from a composition comprising an HFIP hydrolyzable precursor. The HFIP hydrolyzable precursor is a compound, other than sevoflurane itself, that has an intact 1,1,1,3,3,3-hexafluoroisopropoxy moiety[(CF3)2CHO—], and contains one or more moieties susceptible to acidic hydrolysis, such that HFIP is released upon such treatment. The process is useful, among other things, for recovering HFIP from waste streams associated with the synthesis of the inhalation anesthetic, fluoromethyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl ether (“sevoflurane”). The process includes heating the composition with a strong protic acid to a temperature effective to hydrolyze at least some of the HFIP hydrolyzable precursor to HFIP, and then isolating the HFIP from the heated composition.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: January 17, 2006
    Assignee: Baxter International Inc.
    Inventors: Leonid A. Rozov, Ralph A. Lessor
  • Publication number: 20050222468
    Abstract: Provided is a process of obtaining 1,1,1,3,3,3-hexafluoro-2-propanol (“HFIP”) from a composition comprising an HFIP hydrolyzable precursor. The HFIP hydrolyzable precursor is a compound, other than sevoflurane itself, that has an intact 1,1,1,3,3,3-hexafluoroisopropoxy moiety[(CF3)2CH—], and contains one or more moieties susceptible to acidic hydrolysis, such that HFIP is released upon such treatment. The process is useful, among other things, for recovering HFIP from waste streams associated with the synthesis of the inhalation anesthetic, fluoromethyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl ether (“sevoflurane”). The process includes heating the composition with a strong protic acid to a temperature effective to hydrolyze at least some of the HFIP hydrolyzable precursor to HFIP, and then isolating the HFIP from the heated composition.
    Type: Application
    Filed: May 24, 2005
    Publication date: October 6, 2005
    Inventors: Leonid Rozov, Ralph Lessor
  • Patent number: 6800786
    Abstract: Provided is a method for the preparation of desflurane wherein isoflurane is reacted with 0.7-1.2 mol. % of antimony pentachloride and 1.3-2.2 molar equivalents of hydrogen fluoride. Typically, the method is conducted by addition of hydrogen fluoride to a mixture of isoflurane and antimony pentachloride. After the addition of hydrogen fluoride is completed, the reaction is preferably maintained at temperatures of about 9-18° C. for about 6 to 7 hours, before being quenched.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: October 5, 2004
    Assignee: Baxter International, Inc.
    Inventors: Leonid A. Rozov, Ralph A. Lessor
  • Publication number: 20040147779
    Abstract: Provided is a process of obtaining 1,1,1,3,3,3-hexafluoro-2-propanol (“HFIP”) from a composition comprising an HFIP hydrolyzable precursor. The HFIP hydrolyzable precursor is a compound, other than sevoflurane itself, that has an intact 1,1,1,3,3,3-hexafluoroisopropoxy moiety[(CF3)2CHO—], and contains one or more moieties susceptible to acidic hydrolysis, such that HFIP is released upon such treatment. The process is useful, among other things, for recovering HFIP from waste streams associated with the synthesis of the inhalation anesthetic, fluoromethyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl ether (“sevoflurane”). The process includes heating the composition with a strong protic acid to a temperature effective to hydrolyze at least some of the HFIP hydrolyzable precursor to HFIP, and then isolating the HFIP from the heated composition.
    Type: Application
    Filed: January 12, 2004
    Publication date: July 29, 2004
    Applicant: Baxter International Inc
    Inventors: Leonid A. Rozov, Ralph A. Lessor
  • Publication number: 20040127578
    Abstract: Provided is a method of treating a patient having a tissue that is subject to an ischemic event. The method is conducted by parenterally administering a formulation containing a halogenated volatile anesthetic in an amount effective to improve the tissue's resistance to or tolerance of the ischemic event. In preferred embodiment of the invention, the amount of the formulation administered to the patient is sub-anesthetic. The formulation can be administered prior to, concurrently with, or after the ischemic event. The method can be used, for example, for treatment of patients having myocardial or neuronal tissue that is subject to an ischemic event.
    Type: Application
    Filed: October 9, 2003
    Publication date: July 1, 2004
    Applicant: Baxter International Inc.
    Inventors: Raul Trillo, Ralph A. Lessor, Satish Pejaver, Navneet Puri
  • Patent number: 6448451
    Abstract: The invention provides a process for purifying methyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl ether, comprising: passing a composition comprising methyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl ether and dimethyl ether through an evaporation zone; evaporating dimethyl ether by passing a gas stream through the composition; and removing the gas comprising dimethyl ether from the composition.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: September 10, 2002
    Assignee: Baxter International, Inc.
    Inventors: Ralph Rudzinski, Ralph Lessor
  • Publication number: 20020068767
    Abstract: A container for liquid inhalation anesthetics, more particularly, an aluminum container that is suitable for storing halogenated inhalation anesthetics is described.
    Type: Application
    Filed: September 13, 2001
    Publication date: June 6, 2002
    Inventors: Ralph V. Rudzinski, Ralph A. Lessor
  • Patent number: 5886239
    Abstract: A method of preparing fluoromethyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl ether (sevoflurane) and structurally related monofluoromethyl ethers in which the monochloromethyl ether precursor thereof is reacted with a sterically hindered tertiary amine hydrofluoride salt.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: March 23, 1999
    Assignee: Baxter International Inc.
    Inventors: Linas V. Kudzma, Ralph A. Lessor, Leonid A. Rozov, Keith Ramig
  • Patent number: 5621115
    Abstract: This invention pertains to methods for preparing 5-aroyl-1,2-dihydro-3H-pyrrolo-[1,2-a]pyrrole-1-carboxylic acids represented by formula (I): ##STR1## In a first embodiment, the method comprises the sequential steps of cyclizing, via a free radical ring closure reaction, and hydrolyzing a compound represented by formula (IV): ##STR2## wherein R.sub.1 is lower alkyl.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: April 15, 1997
    Assignee: Ohmeda Pharmaceutical Products Division Inc.
    Inventors: Ralph A. Lessor, Linas V. Kudzma, Keith Ramig
  • Patent number: 4762846
    Abstract: A derivative of phencyclidine (1) bearing an isothiocyanate moiety on the meta position of the aromatic ring (3; Metaphit as methanesulfonate and HCl salt) has been synthesized and identified as a rapid and specific site-directed acylating agent of the [.sup.3 H]-phencyclidine binding site in rat brain homogenates. Additional related compounds to Metaphit are Thiophit (oxalate salt), Ethylphit (HCl salt), and Isopropylphit (HCl salt).
    Type: Grant
    Filed: January 31, 1986
    Date of Patent: August 9, 1988
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Kenner C. Rice, Michael F. Rafferty, Arthur E. Jacobson, Patricia Contreras, Thomas L. O'Donohue, Ralph A. Lessor, Mariena V. Mattson
  • Patent number: 4598153
    Abstract: A derivative of phencyclidine (1) bearing an isothiocyanate moiety of the meta position of the aromatic ring (2; Metaphit) has been synthesized and identified as a rapid and specific site-directed acylating agent of the [.sup.3 H]-phencyclidine binding site in rat brain homogenates.
    Type: Grant
    Filed: December 19, 1984
    Date of Patent: July 1, 1986
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Kenner C. Rice, Michael F. Rafferty, Arthur E. Jacobson, Patricia Contreras, Thomas L. O'Donohue, Ralph A. Lessor, Mariena V. Mattson