Patents by Inventor Rudolf Kubela

Rudolf Kubela 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: 20080300404
    Abstract: A process of manufacturing mycophenolate mofetil comprising reacting an alkyl ester of mycophenolic acid, with 2-(4-morpholinyl)ethanol in the presence of a catalyst selected from a form of zinc selected from metallic zinc or at least one zinc salt or at least one zinc oxide, or a form of calcium selected from metallic calcium or at least one calcium salt or at least one calcium oxide.
    Type: Application
    Filed: January 19, 2006
    Publication date: December 4, 2008
    Applicant: APOTEX FERMENTATION INC.
    Inventors: Abdurrazzaque Mirajkar, Rudolf Kubela
  • Publication number: 20080182998
    Abstract: The present invention includes the discovery of a novel polymorphic form of sodium mycophenolate (MPS) and processes for its formation. Furthermore, the present invention also includes a process to efficiently and cleanly convert the novel polymorphic form to known Form M2.
    Type: Application
    Filed: January 25, 2007
    Publication date: July 31, 2008
    Inventors: Chad Glass, Rudolf Kubela
  • Publication number: 20080176937
    Abstract: The present invention includes the discovery of a novel polymorphic form of sodium mycophenolate (MPS) and processes for its formation. Furthermore, the present invention also includes a process to efficiently and cleanly convert the novel polymorphic form to known Form M2.
    Type: Application
    Filed: April 24, 2007
    Publication date: July 24, 2008
    Inventors: Chad Glass, Rudolf Kubela
  • Patent number: 5908959
    Abstract: A process is provided for the preparation of 4-amino-1-hydroxybutylidene-1,1-bisphosphonic acid or salts thereof which comprises of:a) reacting 4-aminobutyric acid with phosphorous acid and phosphorus trichloride in the presence of a polyalkylene(glycol); andb) recovering said 4-amino-1-hydroxybutylidene-1,1-bisphosphonic acid or salts thereof.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: June 1, 1999
    Assignee: Apotex Inc.
    Inventors: Rudolf Kubela, Yong Tao
  • Patent number: 5900485
    Abstract: Process for the manufacture of triazolone compounds and in particular nefazodone and intermediates useful in the manufacture thereof.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: May 4, 1999
    Assignee: Apotex, Inc.
    Inventors: Bo Lei, Tim Fat Tam, Khashayar Karimian, Rudolf Kubela
  • Patent number: 5393893
    Abstract: A process is disclosed for the preparation of simvastatin and its analogs through a novel intermediate (III), which enables a selective .alpha. carbon alkylation of the C-8 acyl side chain.
    Type: Grant
    Filed: November 8, 1993
    Date of Patent: February 28, 1995
    Assignee: Apotex, Inc.
    Inventors: Rudolf Kubela, Jayaramaiyer Radhakrishnan
  • Patent number: 4286095
    Abstract: A 4-phenyl piperidine having the formula: ##STR1## wherein R.sub.1 is a straight chain lower alkyl group; R.sub.2 is --COCH.sub.3, --COC.sub.2 H.sub.5 or ##STR2## R.sub.3 is --OCOCH.sub.3, --OCOC.sub.2 H.sub.5, --OCO -cycloalkyl, or --OCOC.sub.6 H.sub.4 --Z; wherein Z is hydrogen, lower alkyl, lower alkoxy or chlorine, and X is oxygen: or an addition salt thereof with a pharmaceutically acceptable organic acid or inorganic acid. The compounds have have found to have, inter alia, stimulatory effects on the central nervous system which is indicative of their use as antidepressants in humans.
    Type: Grant
    Filed: May 1, 1979
    Date of Patent: August 25, 1981
    Assignee: Canada Packers Inc.
    Inventors: Rudolf Kubela, Philip D. Edwards, Lisa A. Hughes
  • Patent number: 4153789
    Abstract: The present invention is concerned with novel 2-unsubstituted-3-phenylindolines acid addition salts thereof. These compounds have been found to have valuable pharmacological properties indicative of possible utility, inter alia, of controlling coagulation of the blood and as hypoglycemic agents. The invention also provides novel processes for producing the novel compounds and pharmaceutical compositions containing same as active ingredients.
    Type: Grant
    Filed: March 20, 1978
    Date of Patent: May 8, 1979
    Assignee: Delmar Chemicals Limited
    Inventors: Rudolf Kubela, Vaclav Musil, Lise A. Hughes
  • Patent number: 4138494
    Abstract: The present invention is concerned with novel 2-unsubstituted-3-phenylindolines and acid addition salts thereof. These compounds have been found to have a valuable pharmacological property indicative of possible utility in controlling coagulation of the blood.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: February 6, 1979
    Assignee: Delmar Chemicals Limited
    Inventors: Rudolf Kubela, Vaclav Musil, Lise A. Hughes
  • Patent number: 4080330
    Abstract: The present invention is concerned with novel 2-unsubstituted-3-phenylindolines and acid addition salts thereof. These compounds have been found to have valuable pharmacological properties indicative of possible utility, inter alia, of controlling coagulation of the blood and as hypoglycemic agents. The invention also provides novel processes for producing the novel compounds and pharmaceutical compositions containing same as active ingredients.
    Type: Grant
    Filed: June 23, 1975
    Date of Patent: March 21, 1978
    Assignee: Delmar Chemicals Limited
    Inventors: Rudolf Kubela, Vaclav Musil, Lise A. Hughes
  • Patent number: 3980674
    Abstract: The present invention is concerned with novel 7-oxabicyclo-[2.2.1]-5-heptene derivatives and a process for their production. These compounds are useful intermediates in the production of various pharmacologically active compounds.
    Type: Grant
    Filed: January 28, 1974
    Date of Patent: September 14, 1976
    Assignee: Delmar Chemicals Limited
    Inventors: Rudolf Kubela, Lise A. Hughes
  • Patent number: 3957795
    Abstract: The present invention is concerned with novel cyclopentene and cyclopentane derivatives which have pharmacological, particularly analgesic and antiinflammatory activity, and are also useful intermediates in the preparation of other pharmacologically active compounds.
    Type: Grant
    Filed: January 28, 1974
    Date of Patent: May 18, 1976
    Assignee: Delmar Chemicals Limited
    Inventors: Rudolf Kubela, Lise A. Hughes