Patents by Inventor Fiona P. Wilcher

Fiona P. Wilcher 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).

  • Solid phosphoric acid catalyst
    Patent number: 5081086
    Abstract: A novel solid phosphoric acid catalyst composition is disclosed. The composite comprises solid phosphoric acid and a refractory oxide binder. The composite is characterized in that 25.0 volume percent or less of the total catalyst pore volume consists of pores having a diameter of 10,000 .ANG. or greater. An improvement in catalyst activity and stability is observed when such a catalyst is utilized in a hydrocarbon conversion process.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: January 14, 1992
    Assignee: UOP
    Inventors: Fiona P. Wilcher, Tai-Hsiang Chao
  • Catalytic condensation process
    Patent number: 5059737
    Abstract: A hydrocarbon conversion process which utilizes a solid phosphoric acid catalyst having a total X-ray intensity of at least 40 percent relative to alpha-alumina. The solid phosphoric acid catalyst is produced by crystallizing an amorphous mixture of an acid oxide of phosphorus and a siliceous material at a temperature of from 350.degree. to 450.degree. C. and in the presence of from 10 to 50 mole percent water vapor based upon the total vapor rate to the crystallizing means. Embodiments of the new hydrocarbon conversion process include alkylation, oligomerization, and hydration, of hydrocarbons and oxygenated hydrocarbons.
    Type: Grant
    Filed: July 2, 1990
    Date of Patent: October 22, 1991
    Assignee: UOP
    Inventors: Tai-Hsiang Chao, Fiona P. Wilcher, Mark R. Ford, Andrzej Z. Ringwelski
  • Solid phosphoric acid catalyst
    Patent number: 4946815
    Abstract: A solid phosphoric acid catalyst having a total X-ray intensity of at least 30 percent relative to alpha-alumina. The solid phosphoric acid catalyst is produced by crystallizing an amorphous mixture of an acid oxide of phosphorus and a siliceous material at a temperature of from 250.degree. to 450.degree. C. and in the presence of from 3 to 50 mole percent water vapor based upon the total vapor rate to the crystallizing means.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: August 7, 1990
    Assignee: UOP
    Inventors: Tai-Hsiang Chao, Fiona P. Wilcher, Mark R. Ford, Andrzej Z. Ringwelski
  • Solid phosphoric acid catalyst
    Patent number: 4912279
    Abstract: A novel solid phosphoric acid catalyst composition, and process for using the catalyst is disclosed. The composite comprises solid phosphoric acid and a refractory oxide binder. The composite is characterized in that 25.0 volume percent or less of the total catalyst pore volume consists of pores having a diameter of 10,000 .ANG. or greater. An improvement in catalyst stability is observed when such a catalyst is utilized in a hydrocarbon conversion process.
    Type: Grant
    Filed: December 29, 1988
    Date of Patent: March 27, 1990
    Assignee: UOP
    Inventors: Fiona P. Wilcher, Tai-Hsiang Chao