Patents by Inventor Gregory H. Lambeth

Gregory H. Lambeth 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: 20100249394
    Abstract: New processes for producing decitabine are provided.
    Type: Application
    Filed: March 25, 2010
    Publication date: September 30, 2010
    Applicant: Albemarle Corporation
    Inventors: Yunqi Liu, Gregory H. Lambeth, Brian W. Nixon
  • Publication number: 20090035384
    Abstract: The present invention relates to novel urea-formaldehyde polymers coated with an active ingredient, a method of making the same, and their use.
    Type: Application
    Filed: March 1, 2007
    Publication date: February 5, 2009
    Inventors: Gregory H. Lambeth, Gerry M. Sulzer
  • Publication number: 20080269334
    Abstract: Concentrated pourable potassium ibuprofen liquid compositions, and preparation and uses thereof are described. They are composed of (i) at least 60 wt % of potassium ibuprofen in dissolved form; (ii) water; (iii) one or more polyethylene glycols, (iv) optionally up to 5 wt % of at least one C2-3 alkanol; and (v) optionally, ibuprofen in free acid form. The weight ratio of (ii):(iii) is at least 0.9:1. Compositions containing as much as 85.2 wt % of potassium ibuprofen in dissolved form have been successfully made. The highest level of potassium ibuprofen in dissolved form achieved in experiments reported in the presently-known prior art is but 24.2 wt %. The present compositions are suitable for use in the preparation of pharmaceutical products and various pharmaceutical dosage forms such as liquid-filled soft gelatin capsules, syrups, elixirs, suspensions; solid dosage forms such as tablets or caplets; and topically-applied products. such as lotions, creams or ointments.
    Type: Application
    Filed: September 15, 2006
    Publication date: October 30, 2008
    Applicant: ALBEMARLE CORPORATION
    Inventors: Partick C. Hu, Gregory H. Lambeth, Arcelio J. Malcolm
  • Patent number: 6509434
    Abstract: Mixtures of isomeric alkylthiated mononuclear aromatic amines comprising in the range of about 30 to about 70 mole percent of (i) at least one 3,5-di(alkyl-thio)-2,6-diamino-1-alkylbenzene and in the range of about 30 to about 70 mole percent of at least one 3,5-di(alkylthio)-2,4-diamino-1-alkylbenzene, such mixture containing at least about 90 mole percent of (i) and (ii), and optionally containing up to 10 mole percent of one or more isomers of (i) and/or (ii). An alkyl group may be present as a substituent in lieu of a hydrogen atom in the remaining ring position. These mixtures are useful as curatives or extenders in processes for making polyurethanes, polyurethane-ureas, and polyureas.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: January 21, 2003
    Assignee: Albemarle Corporation
    Inventors: William R. Brown, John C. Prindle, Jr., Gregory H. Lambeth
  • Patent number: 5874619
    Abstract: Existing coloration of a liquid ring-polyalkyl-substituted aromatic primary diamine is reduced by blending into such diamine a color-reducing amount of at least one dihydrocarbylhydroxylamine. Preferably, the resultant product is stored in a closed container under an inert atmosphere.
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: February 23, 1999
    Assignee: Albemarle Corporation
    Inventors: Paul L. Wiggins, Gregory H. Lambeth, William R. Brown
  • Patent number: 5840984
    Abstract: Odor formation during storage of (hydrocarbylthio)aromatic amines due to formation and release of odoriferous sulfur-containing species such as dihydrocarbyldisulfides, is suppressed. To accomplish this, a small amount of N,N-dihydrocarbylhydroxylamine odor-inhibitor (e.g., N,N-diethylhydroxylamine) is blended with the (hydrocarbylthio)aromatic amine. This enables products such as a mixture of 3,5-di(methylthio)-2,4-diaminotoluene and 3,5-di(methylthio)-2,6-diaminotoluene) to be stored for long periods of time with significantly reduced formation and release of odoriferous sulfur-containing species.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: November 24, 1998
    Assignee: Albemarle Corporation
    Inventors: Gregory H. Lambeth, Paul L. Wiggins, William R. Brown