Patents by Inventor Catherine S. Hsia Chen

Catherine S. Hsia Chen 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: 5095165
    Abstract: The invention discloses that hydrocarbon lubricants containing olefinic unsaturation participate in an olefin metathesis reaction with alkenes containing polar functional groups to provide an equilibrium mixture containing hydrocarbon lubricants containing the polar groups of the alkenes. The discovery is particularly applicable to the functionalization of near linear lubricants prepared from the oligomerization of propylene using surface deactivated zeolite or lubricants prepared by the oligomerization of C.sub.6 -C.sub.20 alpha olefins using coordination catalyst. Functionalized groups can be incorporated that impart a wide range of properties to the lubricant such as anti-wear or anti-corrosion resistance, or improve the compatibility of the lubricant with other additives.
    Type: Grant
    Filed: March 21, 1990
    Date of Patent: March 10, 1992
    Assignee: Mobil Oil Corporation
    Inventor: Catherine S. Hsia Chen
  • Patent number: 4568786
    Abstract: Olefin upgrading in plural reactors can achieve conversion of lower olefinic feedstock, such as propene, butene, etc., to valuable heavy hydrocarbons containing a lubricant fraction of high viscosity index. Other fuel products, such as (C.sub.10 -C.sub.20) distillate, gasoline and LPG may also be recovered as products. In a preferred process for converting lower olefinic feed to heavier hydrocarbons by contacting the feed with a shape selective medium pore acidic zeolite catalyst at elevated temperature and pressure the catalyst surface is rendered relatively inactive by adding to the olefinic feed an inactivating amount of a sterically-hindered organic base, whereby the catalyst is selectively surface-deactivated, to produce substantially linear heavier hydrocarbons rich in C.sub.10.sup.+ olefins. In the preferred multi-stage process the olefinic feed comprises C.sub.2 -C.sub.
    Type: Grant
    Filed: March 7, 1985
    Date of Patent: February 4, 1986
    Assignee: Mobil Oil Corporation
    Inventors: Catherine S. Hsia Chen, Samuel A. Tabak
  • Patent number: 4520221
    Abstract: High VI lubes in high yields are obtained when lower or light olefins are polymerized over a ZSM-5 type catalyst the surface acidity of which has been inactivated by treatment with a suitable base material.
    Type: Grant
    Filed: April 9, 1984
    Date of Patent: May 28, 1985
    Assignee: Mobil Oil Corporation
    Inventor: Catherine S. Hsia Chen