Patents by Inventor Charles Buchanan

Charles Buchanan 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: 11871852
    Abstract: An inflatable lumbar support cushion for seats including a seat cushion assembly connected with an air bladder that has a hollow body and is covered by a lumbar support that is hollow. The air bladder is inflated by a pump unit assembly which includes a pump unit that blows air to the air bladder by an air hose adapting the size of the lumbar support as required and defining a lumbar support portion which provides comfort to a user. The air bladder configured as a cushion for a sofa. The pump unit can be electronic or manual. The seat cushion can be adapted to different seats by an attaching base located to a bottom surface thereof and the lumbar support may be attached to a backrest by a strap allowing to fasten the inflatable lumbar support cushion to any suitable seat.
    Type: Grant
    Filed: September 2, 2022
    Date of Patent: January 16, 2024
    Inventors: Charles Buchanan, Christine Riley
  • Patent number: 9926384
    Abstract: This invention relates a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate and processes to produce the cellulose solution. Another aspect of this invention relates to shaped articles prepared from a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate. Another embodiment of this invention relates to compositions comprising derivatives of cellulose prepared from a cellulose solution comprising at least one tetraalkylammonium alkylphosphate. Another embodiment of this invention relates to compositions comprising regioselectively substituted cellulose esters prepared from a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate. In another embodiment of the invention, the cellulose esters of the present invention are used as protective and compensation films for liquid crystalline displays.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: March 27, 2018
    Assignee: EASTMAN CHEMICAL COMPANY
    Inventors: Charles Buchanan, Norma Buchanan, Elizabeth Guzman-Morales
  • Publication number: 20140343271
    Abstract: This invention relates a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate and processes to produce the cellulose solution. Another aspect of this invention relates to shaped articles prepared from a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate. Another embodiment of this invention relates to compositions comprising derivatives of cellulose prepared from a cellulose solution comprising at least one tetraalkylammonium alkylphosphate. Another embodiment of this invention relates to compositions comprising regioselectively substituted cellulose esters prepared from a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate. In another embodiment of the invention, the cellulose esters of the present invention are used as protective and compensation films for liquid crystalline displays.
    Type: Application
    Filed: July 31, 2014
    Publication date: November 20, 2014
    Applicant: Eastman Chemical Company
    Inventors: Charles Buchanan, Norma Buchanan, Elizabeth Guzman-Morales
  • Publication number: 20070082870
    Abstract: This invention relates to methods of increasing the aqueous solubility of an antifungal azole using hydroxybutenyl cyclodextrins. This invention also relates to method of increasing the bioavailability of an antifungal azole compounds administered to subjects.
    Type: Application
    Filed: October 11, 2006
    Publication date: April 12, 2007
    Inventors: Charles Buchanan, Norma Buchanan, Juanelle Lambert
  • Publication number: 20060105045
    Abstract: This invention is directed to compositions comprising a water-miscible organic solvent or solvent mixture and one or more cyclodextrin derivatives soluble in the organic water-miscible organic solvent or solvent mixture. In some embodiments, the composition comprises one or more compounds. The invention is further directed to capsules containing the compositions of the present invention and the administration of pharmaceutically active compounds or molecules to subjects. The invention also includes methods of enhancing the solubility of a compound comprising forming a complex or mixture of a compound with a hydroxybutenyl cyclodextrin and a water-miscible solvent.
    Type: Application
    Filed: November 8, 2005
    Publication date: May 18, 2006
    Inventors: Charles Buchanan, Norma Buchanan, Juanelle Lambert, Jessica Posey-Dowty
  • Publication number: 20060105992
    Abstract: This invention relates to compositions that contain cyclodextrin derivatives and selective estrogen receptor modulators and methods for the production of the compositions of the invention. The invention further relates of methods of administering the compositions of the present invention to a human or animal.
    Type: Application
    Filed: November 8, 2005
    Publication date: May 18, 2006
    Inventors: Charles Buchanan, Norma Buchanan, Juanelle Lambert, Jessica Posey-Dowty
  • Publication number: 20050232387
    Abstract: The invention provides a method and apparatus for preparation of radiochemicals, such as PET molecular imaging probes, wherein the reaction step or steps that couple the radioactive isotope to an organic or inorganic compound to form a positron-emitting molecular imaging probe are performed in a microfluidic environment.
    Type: Application
    Filed: April 20, 2004
    Publication date: October 20, 2005
    Inventors: Henry Padgett, Charles Buchanan, Thomas Collier, Joseph Matteo, Charles Alvord
  • Publication number: 20050232861
    Abstract: The invention provides a method and apparatus for preparation of radiochemicals wherein the reaction that couples the radioactive isotope to the reactive precursor to form a positron-emitting molecular imaging probe is performed in a microfluidic environment.
    Type: Application
    Filed: April 20, 2004
    Publication date: October 20, 2005
    Inventors: Charles Buchanan, Henry Padgett, Thomas Collier
  • Publication number: 20050228084
    Abstract: The invention relates to methods of making carbohydrate and polyol esters suitable for use as plasticizers for polymer compositions. The invention also relates to plasticized polymer compositions comprising such carbohydrate and polyol esters. The invention also relates to articles prepared from such plasticized polymer compositions. The invention further relates to methods of using these compositions.
    Type: Application
    Filed: May 17, 2005
    Publication date: October 13, 2005
    Inventors: Charles Buchanan, Norma Buchanan, Kevin Edgar, Juanelle Lambert
  • Publication number: 20050192434
    Abstract: This invention provides cellulose ester interpolymers, and methods of oxidizing cellulose interpolymers and cellulose ester interpolymers. The invention also provides routes to access carboxylated cellulose ester derivatives with high acid numbers wherein the carboxyl group is attached directly to the cellulose backbone by a carbon-carbon bond. Through functionalization of an intermediate aldehyde, the corresponding cationic or zwitterionic cellulose ester derivatives can also be accessed. The interpolymers of the present invention have a number of end-use applications, for example, as binder resins in various types of coating compositions and as drug delivery agents.
    Type: Application
    Filed: November 23, 2004
    Publication date: September 1, 2005
    Inventors: Charles Buchanan, Norma Buchanan, Susan Carty, Chung-Ming Kuo, Juanelle Lambert, Jessica Posey-Dowty, Thelma Watterson, Matthew Wood, Michael Malcolm, Margaretha Lindblad
  • Publication number: 20050148766
    Abstract: The present invention provides disaccharide and trisaccharide C6 to C12 mixed fatty acid esters having a high alpha content. Yet still further, the invention provides chemical processes for the preparation of the materials disclosed herein.
    Type: Application
    Filed: February 9, 2005
    Publication date: July 7, 2005
    Inventors: John Debenham, Charles Buchanan, Matthew Wood, Michael Malcolm, Mary Moore
  • Patent number: 5625029
    Abstract: Novel poly(3-hydroxyalkanoates), such as poly(3-hydroxybutyrate), and blends of these with other polymers are disclosed. A novel process for producing these poly(3-hydroxyalkanoates) is also disclosed which entails polymerizing one or more .beta.-substituted-.beta.-propiolactone(s) under polymerization conditions in the substantial absence of water in the presence of an anionic initiator.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: April 29, 1997
    Assignee: Eastman Chemical Company
    Inventors: John C. Hubbs, Marti N. Harrison, Steven Gedon, Charles Buchanan, Robert M. Gardner, Douglas C. Hoffman, Alan W. White
  • Patent number: 5552515
    Abstract: Novel poly(3-hydroxyalkanoates), such as poly(3-hydroxybutyrate), and blends of these with other polymers are disclosed. A novel process for producing these poly(3-hydroxyalkanoates) is also disclosed which entails polymerizing one or more .beta.-substituted-.beta.-propiolactone(s) under polymerization conditions in the substantial absence of water in the presence of an anionic initiator.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: September 3, 1996
    Assignee: Eastman Chemical Company
    Inventors: John C. Hubbs, Marti N. Harrison, Charles Buchanan, Alan W. White
  • Patent number: 5391708
    Abstract: Novel poly(3-hydroxyalkanoates), such as poly(3-hydroxybutyrate), and blends of these with other polymers are disclosed. A novel process for producing these poly(3-hydroxyalkanoates) is also disclosed which entails polymerizing one or more .beta.-substituted-.beta.-propiolactone(s) under polymerization conditions in the substantial absence of water in the presence of an anionic initiator.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: February 21, 1995
    Assignee: Eastman Chemical Company
    Inventors: John C. Hubbs, Marti N. Harrison, Charles Buchanan