Patents by Inventor Igor Lifshitz

Igor Lifshitz 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: 6599884
    Abstract: The present invention relates to processes for converting clarithromycin Form 0 to clarithromycin Form II, which include slurrying clarithromycin the Form 0 in water. The present invention also relates to processes for the preparation of clarithromycin Form II by converting erythromycin A to clarithromycin and thereafter converting clarithromycin Form 0 to clarithromycin Form II by slurrying. The present invention further relates to the novel clarithromycin polymorph Form IV, a process for its preparation, pharmaceutical compositions comprising the compound, and methods of using the compound as a therapeutic agent.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: July 29, 2003
    Assignee: Teva Pharmaceutical Industries Ltd.
    Inventors: Ilya Avrutov, Igor Lifshitz, Ronen Borochovitz, Basem Masarwa, Edi Schwartz
  • Publication number: 20020028920
    Abstract: The present invention relates to processes for converting clarithromycin Form I to clarithromycin Form II, which include slurrying clarithromycin the Form I in water. The present invention also relates to processes for the preparation of clarithromycin Form II by converting erythromycin A to clarithromycin and thereafter converting clarithromycin Form I to clarithromycin Form II by slurrying.
    Type: Application
    Filed: December 15, 2000
    Publication date: March 7, 2002
    Inventors: Igor Lifshitz, Ilya Avrutov, Edi Schwartz, Basem Masarwa
  • Publication number: 20020026038
    Abstract: The present invention relates to processes for converting clarithromycin Form 0 to clarithromycin Form II, which include slurrying clarithromycin the Form 0 in water. The present invention also relates to processes for the preparation of clarithromycin Form II by converting erythromycin A to clarithromycin and thereafter converting clarithromycin Form 0 to clarithromycin Form II by slurrying. The present invention further relates to the novel clarithromycin polymorph Form IV, a process for its preparation, pharmaceutical compositions comprising the compound, and methods of using the compound as a therapeutic agent.
    Type: Application
    Filed: December 15, 2000
    Publication date: February 28, 2002
    Inventors: Ilya Avrutov, Igor Lifshitz, Ronen Borochovitz, Basem Masarwa, Edi Schwartz
  • Patent number: 6350870
    Abstract: The present invention provides a process for preparing crystalline lorazepam substantially free of bound solvent from a lorazepam alcohol solvate or hydrate by suspending the lorazepam solvate in an organic medium selected from ethyl acetate, cyclohexane, dichloromethane, toluene and mixtures thereof. This process is useful in producing the anti-anxiety and sedative agent lorazepam in increased yields. A process for converting lorazepam lower alcohol solvates to lorazepam hydrate is also disclosed.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: February 26, 2002
    Assignee: Teva Pharmaceutical Industreis, Ltd.
    Inventor: Igor Lifshitz
  • Publication number: 20010039340
    Abstract: The present invention provides a process for preparing crystalline lorazepam substantially free of bound solvent from a lorazepam alcohol solvate or hydrate by suspending the lorazepam solvate in an organic medium selected from ethyl acetate, cyclohexane, dichloromethane, toluene and mixtures thereof. This process is useful in producing the anti-anxiety and sedative agent lorazepam in increased yields. A process for converting lorazepam lower alcohol solvates to lorazepam hydrate is also disclosed.
    Type: Application
    Filed: March 5, 2001
    Publication date: November 8, 2001
    Inventor: Igor Lifshitz
  • Publication number: 20010037015
    Abstract: The present invention relates to processes for preparing protected silylated clarithromycin oxime, preferably 6-O-methyl-2′, 4″-bis(trimethylsilyl)-erythromycin A 9-O-(2-methoxyprop-2-yl)oxime (“S-MOP oxime”), and for converting protected silylated clarithromycin oxime, preferably S-MOP oxime, to clarithromycin. Processes for preparing protected silylated clarithromycin oxime according to the present invention, include reacting a silyl oxime derivative with methylating agent in the presence of at least one solvent and a base, where the solvent comprises methyl tertbutyl ether.
    Type: Application
    Filed: December 15, 2000
    Publication date: November 1, 2001
    Inventors: Ilya Avrutov, Igor Lifshitz, Elizabeth Lewiner
  • Patent number: 4516923
    Abstract: Food products are processed prior to consumption in a press form, comprising two hinged together trays, rows of multiple separate food product molding apertures arranged staggered relative to one another in the trays, feet members mounted for support of and underneath the trays, respectively arranged in alignment with and adjacent to a molding aperture, said feet members being utilized to intercept and eject food products from the molding apertures, when the trays are swung inwardly from an aligned into a superposed position.
    Type: Grant
    Filed: March 29, 1984
    Date of Patent: May 14, 1985
    Inventors: Igor Lifshitz, Ifim Lifshitz
  • Patent number: 4382768
    Abstract: An improved apparatus for making dough envelopes containing filling. The apparatus is molded from plastic and includes a frame structure having a plurality of interconnected hexagonal molds so as to form a honeycomb type structure. Each hexagonal mold includes six inclined cutting edges which are connected around a central inverted conical chamber. The inverted conical chamber partially supports the dough envelope during formation to produce uniformly shaped and aesthetically pleasing envelopes. Further, horizontal pasting faces are provided in the corners of each mold between the conical chamber base and cutting edges lower edges. These horizontal pasting faces in combination with the cutting edges provide a strong and uniform seal around the dough envelope edges.
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: May 10, 1983
    Inventors: Igor Lifshitz, Mikhail Kirakuperman
  • Patent number: 4362497
    Abstract: Food products are processed prior to consumption in a press form having multiple, separate, pre-selected planar food product molds, each having tapered walls, providing easy food product removal. The food products can have pastry dough exteriors and can be filled with selected food fillings held in position and shaped by dough crust exteriors. Multiple press form food product molds have regular planar shapes disposed multiple in a tray. One face of each product mold has a cutting-edge knife disposed thereon, conforming to the mold interior shape. The cutting-edge knife can be disposed at either mold wall taper terminus. A cooperatively shaped, one-piece negative pusher plug mold, sized to intercept each one of the multiple food product molds disposed in the tray, is used to cooperatively push each food product out of the molds in the tray simultaneously.
    Type: Grant
    Filed: August 14, 1981
    Date of Patent: December 7, 1982
    Inventor: Igor Lifshitz