Patents by Inventor Peter W. D. Mitchell

Peter W. D. Mitchell 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).

  • Process for the separation of isomers of diastereomeric alcohols
    Patent number: 5095155
    Abstract: Closely boiling diastereomeric isomer alcohols are separated by converting them to esters having disparate boiling points, separating the ester isomers by distillation and saponifying the separate ester isomers to obtain the individual alcohol isomers.
    Type: Grant
    Filed: June 7, 1990
    Date of Patent: March 10, 1992
    Assignee: Union Camp Corporation
    Inventor: Peter W. D. Mitchell
  • Preparation of pseudoionones
    Patent number: 4874900
    Abstract: A process is provided for the preparation of pseudoionones by the condensation reaction of citral with a ketone in the presence of lithium hydroxide catalyst.
    Type: Grant
    Filed: June 16, 1987
    Date of Patent: October 17, 1989
    Assignee: Union Camp Corporation
    Inventor: Peter W. D. Mitchell
  • Improved method for the preparation of 1,4-cineole
    Patent number: 4831163
    Abstract: A method is provided for preparing cineole in an improved yield and with increased 1,4- isomer content, by reaction of terpin hydrate or terpineol with an acid, such as phosphoric acid, with distillation of the cineole from the reaction mixture as the cineole is formed.
    Type: Grant
    Filed: July 24, 1987
    Date of Patent: May 16, 1989
    Assignee: Union Camp Corporation
    Inventor: Peter W. D. Mitchell
  • Isomerization of linalyl halides with quaternary salts
    Patent number: 4761507
    Abstract: A method for the isomerization of linalyl halides is disclosed, improved by the presence of an organic quaternary salt. The improved method of the invention requires less energy for completion of the isomerization and shortens the isomerization times.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: August 2, 1988
    Assignee: Union Camp Corporation
    Inventors: Peter W. D. Mitchell, Lois T. McElligott, David E. Sasser
  • Hydrohalogenation of myrcene
    Patent number: 4704485
    Abstract: The disclosure is of an improved process for the hydrohalogenation of a conjugated diene in the presence of a catalyst, which comprises carrying out the hydrohalogenation in the presence of an organic quaternary salt.
    Type: Grant
    Filed: July 1, 1985
    Date of Patent: November 3, 1987
    Assignee: Union Camp Corporation
    Inventors: Peter W. D. Mitchell, Lois T. McElligott, David E. Sasser
  • Preparation of terpinen-4-ols and intermediates
    Patent number: 4638104
    Abstract: A method of preparing terpinen-4-ols and intermediates thereof, by reacting 1,4-cineole with an alkali metal aryl compound, resulting in an E2 elimination reaction of 1,4-cineole.
    Type: Grant
    Filed: October 1, 1985
    Date of Patent: January 20, 1987
    Assignee: Union Camp Corporation
    Inventor: Peter W. D. Mitchell
  • Preparation of delta-terpineol
    Patent number: 4638103
    Abstract: A method of preparing delta-terpineol by reacting 1,8-cineole with an alkali metal aryl compound resulting in an E2 elimination reaction of 1,8-cineole.
    Type: Grant
    Filed: October 1, 1985
    Date of Patent: January 20, 1987
    Assignee: Union Camp Corporation
    Inventor: Peter W. D. Mitchell
  • Preparation of terpinen-4-ols
    Patent number: 4570022
    Abstract: A method of preparing 1-terpinen-4-ol and 1(7)-terpinen-4-ol comprising an E2 elimination reaction of 1,4-cineole.
    Type: Grant
    Filed: May 9, 1985
    Date of Patent: February 11, 1986
    Assignee: Union Camp Corporation
    Inventor: Peter W. D. Mitchell
  • Separation of 1,8-cineole by forming a complex with hydroquinone
    Patent number: 4521608
    Abstract: Mixtures containing 1,8-cineole are treated with hydroquinone to complex with and precipitate the 1,8-cineole. The complex in a crystalline form is separated from the mixture and dissociated to give 1,8-cineole which may be isolated in high-purity form by filtration or distillation.
    Type: Grant
    Filed: May 12, 1983
    Date of Patent: June 4, 1985
    Assignee: Union Camp Corporation
    Inventor: Peter W. D. Mitchell
  • Method of preparing alkali metal salts of organic diamines
    Patent number: 4521627
    Abstract: The disclosure is of a method of preparing alkaline metal salts of organic diamines. The method comprises, in brief, reacting the alkaline metal with a molar excess of the diamine in the presence of a catalytic proportion of a transition metal compound, at a temperature of from about 20.degree. C. to reflux temperature for the reaction mixture.
    Type: Grant
    Filed: February 6, 1984
    Date of Patent: June 4, 1985
    Assignee: Union Camp Corporation
    Inventor: Peter W. D. Mitchell
  • Dispensing fragrances
    Patent number: 4454987
    Abstract: Disclosed is a method and apparatus for dispensing fragrances of odorant, alcohols over prolonged periods of time.
    Type: Grant
    Filed: July 29, 1982
    Date of Patent: June 19, 1984
    Assignee: Union Camp Corporation
    Inventor: Peter W. D. Mitchell