Patents by Inventor Christopher S. John

Christopher S. John 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).

  • Production of dichlorohydrin
    Patent number: 5292972
    Abstract: The invention relates to a process for the production of dichlorohydrin which comprises reacting allylchloride, water and chlorine in a reaction zone to form an aqueous solution comprising dichlorohydrin and chlorinated organic byproducts, and contacting the aqueous solution with 1,2,3-trichloropropane to obtain an aqueous layer comprising the dichlorohydrin and an organic layer comprising the trichloropropane and chlorinated organic byproducts, separating both layers and recovering the dichlorohydrin.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: March 8, 1994
    Assignee: Shell Oil Company
    Inventors: Christopher S. John, Wilfridus P. M. Maas
  • Process for removing hydrogen from the presence of organic compounds
    Patent number: 5124500
    Abstract: A process for the removal of hydrogen from a mixture of hydrogen and one or more organic compounds, which comprises contacting the mixture with a molecular sieve containing a reducible metal cation, said molecular sieve being selectively permeable to hydrogen.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: June 23, 1992
    Assignee: Shell Oil Company
    Inventors: David M. Clark, Pierre E. Dejaifve, Christopher S. John, Jaydeep Biswas, Ian E. Maxwell
  • Process for the preparation of an aldehyde
    Patent number: 4605782
    Abstract: An aldehyde is prepared by passing an aromatic carboxylic compound or an aliphatic carboxylic compound having at most one .alpha.-hydrogen atom in the acyl group, in the presence of hydrogen at elevated temperature over a catalyst comprising at least 25% w of iron oxide expressed as Fe.sub.2 O.sub.3, calculated on the total catalyst.
    Type: Grant
    Filed: August 5, 1985
    Date of Patent: August 12, 1986
    Assignee: Shell Oil Company
    Inventor: Christopher S. John
  • Process for the co-production of ketones and mono-olefins
    Patent number: 4421933
    Abstract: Process for the co-production of ketones and mono-olefins from secondary alcohols and conjugated di-olefins in which dehydrogenation of the secondary alcohol and hydrogenation of the conjugated di-olefin are effected by contacting a mixture of the secondary alcohol and the conjugated di-olefin with a heterogeneous copper-containing catalytic system. The process is very useful for the co-production of methyl ethyl ketone and n-butenes from sec-butanol and butadiene at low temperatures (e.g. between 90.degree. C. and 130.degree. C.).
    Type: Grant
    Filed: July 2, 1982
    Date of Patent: December 20, 1983
    Assignee: Shell Oil Company
    Inventors: Johannes A. M. Van Broekhoven, Christopher S. John