Patents by Inventor Alan Kenneth Greenwood

Alan Kenneth Greenwood 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: 8530679
    Abstract: The present invention provides a process for handling ?9-THC, which comprises preparing a solution of ?9-THC in a solvent which exists as a gas at room temperature and atmospheric pressure. The invention also provides solutions of ?9-THC in the solvent and solid preparations of ?9-THC.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: September 10, 2013
    Assignee: Resolution Chemicals Limited
    Inventors: Parveen Bhatarah, Alan Kenneth Greenwood, Derek McHattie, Jerome Thomas Garfield Carr-Brion
  • Publication number: 20110171300
    Abstract: A compound of formula (I) wherein R is selected from (i) a 5 to 7 membered heterocyclic ring containing 1 to 3 heteroatoms independently selected from nitrogen, oxygen and sulfur, which is optionally substituted by one or more groups independently selected from halo, CN, NO2, (C1-C6)alkyl, (C1-C6)alkoxy and phenyl; (ii) (C1-C6)alkyl, which is optionally substituted by one or more substituents each independently selected from halo, oxo, CN, NO2, (C1-C6)alkyl, (C1-C6)alkoxy and phenyl; (iii) (C1-C6)alkyl substituted by (C3-C13)cycloalkyl, which is optionally substituted by one or more substituents each independently selected from halo, oxo, CN, NO2, (C1-C6)alkyl, (C1-C6)alkoxy and phenyl; and (iv) (C3-C13)cycloalkyl, which is optionally substituted by one or more substituents each independently selected from halo, oxo, CN, NO2, (C1-C6)alkyl, (C1-C6)alkoxy and phenyl.
    Type: Application
    Filed: February 14, 2008
    Publication date: July 14, 2011
    Applicant: RESOLUTION CHEMICALS LIMITED
    Inventors: Parveen Bhatarah, Kevin John Batchelor, Derek Mchattie, Alan Kenneth Greenwood
  • Publication number: 20110046213
    Abstract: ?9 THC is obtained by extracting ?9 THC and ?9 THC carboxylic acid from plant material using a non-polar solvent and decarboxylating the ?9 THC acid into ?9 THC in the same solvent, without a solvent swap, in the presence of aqueous base. The ?9 THC is then washed to remove inorganic impurities, still in the same original solvent.
    Type: Application
    Filed: May 1, 2009
    Publication date: February 24, 2011
    Inventors: Parveen Bhatarah, Derek McHattie, Alan Kenneth Greenwood
  • Publication number: 20100197646
    Abstract: A sterile composition of a pharmaceutical compound is prepared by combining solvent with a non-sterile pharmaceutical compound to form a solution and filtering to yield a sterile pharmaceutical compound, optionally removing all or part of the solvent, and under sterile conditions combining the compound with a pharmaceutically acceptable carrier.
    Type: Application
    Filed: April 13, 2010
    Publication date: August 5, 2010
    Applicant: RESOLUTION CHEMICALS LIMITED
    Inventors: Parveen Bhatarah, Alan Kenneth Greenwood
  • Publication number: 20100087518
    Abstract: The present invention provides a process for handling ?9-THC, which comprises preparing a solution of ?9-THC in a solvent which exists as a gas at room temperature and atmospheric pressure. The invention also provides solutions of ?9-THC in the solvent and solid preparations of ?9-THC.
    Type: Application
    Filed: February 19, 2008
    Publication date: April 8, 2010
    Applicant: RESOLUTION CHEMICALS LIMITED
    Inventors: Parveen Bhatarah, Alan Kenneth Greenwood, Derek Mchattie, Jerome Thomas Garfield Carr-Brion
  • Publication number: 20090253783
    Abstract: The present invention provides isolated, purified ?9 THC. In another embodiment, the invention provides pharmaceutical compositions comprising isolated, purified ?9 THC and a pharmaceutically acceptable carrier. In another embodiment, the invention provides methods of preparing pharmaceutical compositions comprising isolated, purified ?9 THC and a pharmaceutically acceptable carrier.
    Type: Application
    Filed: June 18, 2009
    Publication date: October 8, 2009
    Applicant: Resolution Chemicals Limited
    Inventors: Neil John Goodwin, Nicolas James Archer, Christopher Murray, Alan Kenneth Greenwood, Derek Mchattie
  • Patent number: 7524881
    Abstract: ?9 THC acid is obtained from plant material and extracted into an aqueous solvent under conditions of pH control. The acid is converted to a salt and the salt extracted into a polar solvent, yielding acid of high purity. The ?9 THC acid is then converted to ?9 THC which is further purified and combined with a carrier for pharmaceutical use.
    Type: Grant
    Filed: February 3, 2003
    Date of Patent: April 28, 2009
    Assignee: Resolution Chemicals Limited
    Inventors: Neil John Goodwin, Nicolas James Archer, Christopher Murray, Alan Kenneth Greenwood, Derek Mchattie
  • Patent number: 7498458
    Abstract: Disclosed are processes for the synthesis and purification of prostaglandins and analogues thereof, especially analogues of PGF2?.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: March 3, 2009
    Assignee: Resolution Chemicals Limited
    Inventors: Alan Kenneth Greenwood, Derek McHattie, David George Thompson, Derek Clissold
  • Patent number: 7339060
    Abstract: A method of preparing cabergoline Form I, comprising forming a solvate including cabergoline and a p-disubstituted benzene of formula (A) or 1,3,5-trimethylbenzene and obtaining cabergoline Form I from the solvate. Another aspect of the present invention provides a method for preparing cabergoline Form I comprising dissolving cabergoline in p-disubstituted benzene or 1,3,5-trimethylbenzene and recovering the cabergoline Form I polymorph, suitably by direct crystallization of Form I or by recovery of a solvate which can be converted to Form I. Another aspect of the present invention provides a novel cabergoline polymorph designated cabergoline Form FB and a method of preparing said polymorph by dissolving or forming a solvate of cabergoline in fluorobenzene and recovering cabergoline Form FB.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: March 4, 2008
    Assignee: Resolution Chemicals, Ltd.
    Inventors: Alan Kenneth Greenwood, Derek McHattie, Parveen Bhatarah, Mahmoud Aloui
  • Patent number: 7268239
    Abstract: Disclosed are processes for the synthesis and purification of prostaglandins and analogues thereof, especially analogues of PGF2?.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: September 11, 2007
    Assignee: Resolution Chemicals Limited
    Inventors: Alan Kenneth Greenwood, Derek McHattie, David George Thompson, Derek Clissold
  • Patent number: 6877249
    Abstract: A method of drying a lactulose solution comprises introducing the solution into a vacuum chamber at elevated temperature and at reduced pressure so that the solution forms a foam, drying the foam under reduced pressure, and milling or grinding or breaking the dried foam into powder.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: April 12, 2005
    Assignee: Relax Limited
    Inventors: Alan Kenneth Greenwood, Anthony Christopher Allen, Jaap Van Dijk
  • Publication number: 20040249172
    Abstract: Disclosed are processes for the synthesis and purification of prostaglandins and analogues thereof, especially analogues of PGF2&agr;.
    Type: Application
    Filed: June 8, 2004
    Publication date: December 9, 2004
    Inventors: Alan Kenneth Greenwood, Derek McHattie, David George Thompson, Derek Clissold
  • Publication number: 20040014997
    Abstract: Preparation of citalopram comprises the steps of: (a) converting the compound of Formula (I) to a compound of Formula (II), wherein R in Formula (I) represents a C2 to C5 alkylene group which may be substituted or unsubstituted, and R1 in the compounds of Formula (II) represents a carboxylic acid group or a salt or an ester thereof; and (b) converting the compound of Formula (II) to form citalopram or a pharmaceutically acceptable salt thereof, or a direct conversion of the compound of Formula (I) to citalopram 1
    Type: Application
    Filed: December 16, 2002
    Publication date: January 22, 2004
    Inventors: Alan Kenneth Greenwood, Derek McHattie, Josef A. Rechka, Paul C.M. Hedger, Mark P. Gamble