Patents by Inventor Amit Basak

Amit Basak 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).

  • Synthetic methods for preparing procyanidin oligomers
    Patent number: 7282598
    Abstract: Processes are disclosed for the production of linear and branched procyanidin oligomers having “n” procyanidin monomeric units where n is 2 to 18. The processes include coupling protected, activated monomers with an unprotected monomer to produce a partially protected (4?8) dimer. The dimer is optionally blocked, coupled with an activated protected monomer to produce a partially protected, optionally blocked trimer, and deprotected. The steps can be repeated to produce higher oligomers. Processes are also provided for producing (8?8), (8?6), and (6?6) dimers and doubly branched oligomers. Crystalline 8-bromo tetra-O-benzyl (?)-epicatechin is produced under certain conditions.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: October 16, 2007
    Inventors: Leo J. Romanczyk, Jr., Amit Basak, Craig A. Townsend
  • Synthetic methods for preparing procyanidin oligomers
    Patent number: 7015338
    Abstract: Processes are disclosed for the production of linear and branched procyanidin oligomers having “n” procyanidin monomeric units where n is 2 to 18. The processes include coupling protected, activated monomers with an unprotected monomer to produce a partially protected (4?8) dimer. The dimer is optionally blocked, coupled with an activated protected monomer to produce a partially protected, optionally blocked trimer, and deprotected. The steps can be repeated to produce higher oligomers. Processes are also provided for producing (8?8), (8?6), and (6?6) dimers and doubly branched oligomers. Crystalline 8-bromo-tetra-O-benzyl-(?)-epicatechin is produced under certain conditions.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: March 21, 2006
    Assignee: Mars Incorporated
    Inventors: Leo J. Romancyzk, Jr., Amit Basak, Craig A. Townsend
  • Synthetic methods for preparing procyanidin oligomers
    Patent number: 6864377
    Abstract: Processes are disclosed for the production of linear and branched procyanidin oligomers having “n” procyanidin monomeric units where n is 2 to 18. The processes include coupling protected, activated monomers with an unprotected monomer to produce a partially protected (4?8) dimer. The dimer is optionally blocked, coupled with an activated protected monomer to produce a partially protected, optionally blocked trimer, and deprotected. The steps can be repeated to produce higher oligomers. Processes are also provided for producing (8?8), (8?6), and (6?6) dimers and doubly branched oligomers. Crystalline 8-bromo tetra-O-benzyl (?)-epicatechin is produced under certain conditions.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: March 8, 2005
    Assignee: Mars Incorporated
    Inventors: Leo J Romanczyk, Jr., Amit Basak, Craig A Townsend
  • Synthetic methods for preparing procyanidin oligomers
    Publication number: 20040176441
    Abstract: Processes are disclosed for the production of linear and branched procyanidin oligomers having “n” procyanidin monomeric units where n is 2 to 18. The processes include coupling protected, activated monomers with an unprotected monomer to produce a partially protected (4→8) dimer. The dimer is optionally blocked, coupled with an activated protected monomer to produce a partially protected, optionally blocked trimer, and deprotected. The steps can be repeated to produce higher oligomers. Processes are also provided for producing (8→8), (8→6), and (6→6) dimers and doubly branched oligomers. Crystalline 8-bromo tetra-O-benzyl (−)-epicatechin is produced under certain conditions.
    Type: Application
    Filed: March 11, 2004
    Publication date: September 9, 2004
    Applicant: Mars Incorporated
    Inventors: Leo J. Romanczyk, Amit Basak, Craig A. Townsend
  • Synthetic methods for preparing procyanidin oligomers
    Publication number: 20030114691
    Abstract: Processes are disclosed for the production of linear and branched procyanidin oligomers having “n” procyanidin monomeric units where n is 2 to 18. The processes include coupling protected, activated monomers with an unprotected monomer to produce a partially protected (4→8) dimer. The dimer is optionally blocked, coupled with an activated protected monomer to produce a partially protected, optionally blocked trimer, and deprotected. The steps can be repeated to produce higher oligomers. Processes are also provided for producing (8→8), (8→6), and (6→6) dimers and doubly branched oligomers. Crystalline 8-bromo tetra-O-benzyl (−)-epicatechin is produced under certain conditions.
    Type: Application
    Filed: August 6, 2002
    Publication date: June 19, 2003
    Applicant: Mars Incorporated
    Inventors: Leo J. Romanczyk, Amit Basak, Craig A. Townsend
  • 2-(Allenyl)penicillins
    Patent number: 4769325
    Abstract: 2-(Allenyl)penicillins antibiotics and intermediates thereto are disclosed. A process for making the 2-(allenyl)penicillins and the starting materials for the process are also disclosed.
    Type: Grant
    Filed: July 28, 1986
    Date of Patent: September 6, 1988
    Inventors: Jack E. Baldwin, Amit Basak