Patents by Inventor Robert J. Clemens

Robert J. Clemens 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).

  • Nutritive water soluble glycerol esters of hydroxy butyric acid
    Patent number: 5693850
    Abstract: A process for the production of water soluble glycerol esters useful as parenteral nutrients is disclosed. The process comprises the reaction of glycerol or a protected glycerol and an acetoacetate ester or acetoacetate precursor, yielding an acetoacetyl glycerol which is thereafter reduced, providing a glycerol ester of 3-hydroxybutyric acid.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: December 2, 1997
    Assignee: Eastman Chemical Company
    Inventors: Ronald H. Birkhahn, Robert J. Clemens, Charles A. McCombs
  • Nutritive glycerol esters of .beta.-acyloxy butyrates
    Patent number: 5519161
    Abstract: Novel compositions that are useful as nutrients are disclosed. These compounds are preferably water soluble parenteral nutrients and are glycerol esters of .beta.-acyloxybutyrates of the formula ##STR1## wherein each R is the same or different and is hydrogen, or --COCH.sub.2 CHOR'CH.sub.3), provided that at least one R is not hydrogen and wherein R' is a linear acid ester of even carbon number from 2 to 20 carbons. These compositions are useful as a substitute for glucose in feeding.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: May 21, 1996
    Inventors: Ronald H. Birkhahn, Robert J. Clemens, Charles A. McCombs, John C. Hubbs
  • Parenteral nutrients based on watersoluble glycerol bisacetoacetates
    Patent number: 5420335
    Abstract: Novel parenteral nutrient compositions are disclosed. These compositions are sterile aqueous solutions containing an effective amount of at least one glycerol bisacetoacetate of the formula: ##STR1## wherein one R group is hydrogen, and two R groups are --COCH.sub.2 COCH.sub.3). These compositions are useful as a substitute for glucose in intravenous feeding.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: May 30, 1995
    Inventors: Ronald H. Birkhahn, Robert J. Clemens, John C. Hubbs
  • 1-acetoacetamido-2,3-propane diol monomer and polyesters prerpared therefrom
    Patent number: 5321118
    Abstract: Disclosed is a novel monomer composition and its preparation that is useful in the production of polyesters. This novel monomer composition is 1-acetoacetamido-2,3-propane diol and can be used in the preparation of polyesters in combination with a dicarboxylic acid.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: June 14, 1994
    Assignee: Eastman Chemical Company
    Inventors: John C. Hubbs, Robert J. Clemens
  • Thermosetting coating compositions
    Patent number: 5254637
    Abstract: Disclosed are certain novel 2,2'-bisacetoacetates useful as crosslinking agents and a process for the preparation therefor. Also provided are novel enamel compositions containing the crosslinkers and coatings and articles coated with thermosetting coating compositions crosslinked with these novel crosslinkers.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: October 19, 1993
    Assignee: Eastman Kodak Company
    Inventors: J. Stewart Witzeman, Allen L. Crain, Robert J. Clemens
  • Thermosetting coating compositions
    Patent number: 5247122
    Abstract: Disclosed are certain novel 2,2'-bisacetoacetates useful as crosslinking agents and a process for the preparation therefor. Also provided are novel enamel compositions containing the crosslinkers and coatings and articles coated with thermosetting coating compositions crosslinked with these novel crosslinkers.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: September 21, 1993
    Assignee: Eastman Kodak Company
    Inventors: J. Stewart Witzeman, Allen L. Crain, Robert J. Clemens
  • Low temperature Michael addition reactions
    Patent number: 5017649
    Abstract: The condensation of .beta.-dicarbonyl compounds with .alpha.,.beta.-unsaturated compounds is promoted by amidine and guanidine compounds.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: May 21, 1991
    Assignee: Eastman Kodak Company
    Inventor: Robert J. Clemens
  • Process for the preparation of .beta.-ketocarboximides of .alpha.,.beta.-unsaturated amides
    Patent number: 4992584
    Abstract: A process is disclosed for the preparation of .beta.-ketocarboximides of .alpha.,.beta.-unsaturated amides from 1,3-dioxin-4-ones and .alpha.,.beta.-unsaturated amides using an inert solvent system capable of maintaining both reactants substantially in homogeneous solution throughout the reaction. This process provides greatly improved yields of .alpha.,.beta.-ketocarboximides of .alpha.,.beta.-unsaturated amides as well as a simple method of recovering same since such products can readily be precipitated from the reaction mixture.
    Type: Grant
    Filed: August 12, 1988
    Date of Patent: February 12, 1991
    Assignee: Eastman Kodak Company
    Inventor: Robert J. Clemens
  • Preparation of .alpha.-haloacetoacetic esters
    Patent number: 4633013
    Abstract: Disclosed is a process for the preparation of .alpha.-haloacetoacetic esters by the reaction of an alkali metal alkoxide with a 5-halo-4H-1,3-dioxin-4-one compound, the desired product being obtained as an alkali metal salt which may be converted to the corresponding free ester by treating with acid.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: December 30, 1986
    Assignee: Eastman Kodak Company
    Inventor: Robert J. Clemens
  • 5-halo-4H-1,3-dioxin-4-one compounds
    Patent number: 4582913
    Abstract: Disclosed are novel 5-halo-4H-1,3-dioxin-4-ones and their preparation by treating a compound having the formula ##STR1## with X.sub.2 or SO.sub.2 X.sub.2 wherein X is Cl or Br.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: April 15, 1986
    Assignee: Eastman Kodak Company
    Inventor: Robert J. Clemens
  • Process for the preparation of dehydroacetic acid
    Patent number: 4496747
    Abstract: A process for the preparation of dehydroacetic acid which comprises heating 2,2,6-trimethyl-4H-1,3-dioxin-4-one, preferably at a temperature of about 130.degree. C. to about 160.degree.C., the heating being carried out preferably in the presence of an inert solvent such as xylene and preferably dehydroacetic acid; the solvent being present in an amount of about 0.05 to about 2.0 moles per mole of the compound being heated, the process further comprising recovering dehydroacetic acid so produced.
    Type: Grant
    Filed: April 21, 1983
    Date of Patent: January 29, 1985
    Assignee: Eastman Kodak Company
    Inventor: Robert J. Clemens