Patents by Inventor Thomas J. Sheerin

Thomas J. Sheerin 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).

  • Non toxic, biodegradable well fluids
    Patent number: 5498596
    Abstract: Well fluids such as drilling muds, especially useful in offshore drilling, are formulated with a hydrocarbon oil blend of a low viscosity poly alpha-olefin (PAO) such as a low molecular weight oligomer of decene together with a C.sub.10 to C.sub.18 paraffinic hydrocarbon of petroleum origin and a C.sub.10 to C.sub.18 olefin such as dodecene-1 or tetradecene-1. The fluids exhibit good biodegradability and are non-toxic to marine organisms; they also meet viscosity and pour points specifications for formulation into oil based muds.
    Type: Grant
    Filed: September 29, 1993
    Date of Patent: March 12, 1996
    Assignee: Mobil Oil Corporation
    Inventors: Henry Ashjian, Larry C. Peel, Thomas J. Sheerin, Robert S. Williamson
  • Process of preparing naphthyl acetals
    Patent number: 3978139
    Abstract: Naphthyl acetals are made by reacting a naphthol with an alkyl vinyl ether under the influence of an aliphatic acid catalyst. For example n-butyl-1-naphthyl acetal is made by reacting 1-naphthol with n-butyl vinyl ether in the presence of up to about 5 mole percent, based on moles of naphthol, of a weak organic acid such as acetic acid or other aliphatic monocarboxylic acids.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: August 31, 1976
    Assignee: Mobil Oil Corporation
    Inventor: Thomas J. Sheerin