Patents by Inventor Joseph Davis

Joseph Davis 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).

  • Conversion of compactin to pravastatin by actinomadura
    Patent number: 5942423
    Abstract: A method for converting compactin to pravastatin is described. Compactin is provided and contacted with an agent derived from Actinomadura under conditions in which the agent converts compactin to pravastatin. Also described are an Actinomadura strain, an Actinomadura cell free extract, an Actinomadura hydroxylase, and a method for lowering cholesterol levels in mammals.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 24, 1999
    Assignee: Massachusetts Institute of Technology
    Inventors: Arnold L. Demain, Yulin Peng, Jacob Yashphe, Joseph Davis
  • Lubrication system
    Patent number: 4527911
    Abstract: An oil transfer tube for a gas turbine engine lubrication system is fabricated with radial and axial passageways so that it permits oil to feed the bearing's fluid damper and distributes oil to the bearing itself. The transfer tube is easily removable without disrupting the adjacent assemblies.
    Type: Grant
    Filed: April 22, 1983
    Date of Patent: July 9, 1985
    Assignee: United Technologies Corporation
    Inventor: Joseph Davis
  • Bearing support structure
    Patent number: 4453783
    Abstract: A bearing support structure in which the outer bearing race is in a support ring surrounded by an outer damper ring to form an oil damper space therebetween. At one end of the support ring is a projecting flange to which one end of each of a ring of rods is secured. This ring of rods surrounds the outer damper ring and is secured at the other end of the rods to the remote end of the outer damper ring. The inner end of the damper ring is supported from a mounting flange by a frusto-conical member having holes therethrough for the rods.
    Type: Grant
    Filed: December 28, 1981
    Date of Patent: June 12, 1984
    Assignee: United Technologies Corporation
    Inventors: Joseph Davis, Richard T. White
  • Oil weepage return for carbon seal plates
    Patent number: 4406459
    Abstract: A carbon seal for the bearing compartment for a gas turbine engine has radially extending passages in the rotating seal plate so arranged as to pump oil by centrifugal force from the space between the seal plate and the shaft into the bearing compartment surrounding the seal. With this seal plate no detrimental oil accumulation is permitted in this space.
    Type: Grant
    Filed: June 18, 1982
    Date of Patent: September 27, 1983
    Assignee: United Technologies Corporation
    Inventors: Joseph Davis, Donald D. Sidat
  • Recovery of metals
    Patent number: 4033764
    Abstract: Metal ions may be scavenged from solution by means of a complexing agent comprising an inorganic substrate, such as a clay mineral, with covalent organic molecules, such as onium compounds, chemically bonded to the substrate, the covalent organic molecules containing free coordinating groups. The complexing agents are particularly useful in scavenging environmentally harmful metal ions such as mercury from industrial effluents.
    Type: Grant
    Filed: May 20, 1975
    Date of Patent: July 5, 1977
    Assignee: Laporte Industries Limited
    Inventors: Terence Dudley Colegate, Christopher Robert Farnworth, Eric Joseph Davis