Patents by Inventor Rosauro V. Holgado

Rosauro V. Holgado 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).

  • Fire-resistant hydraulic fluid compositions
    Patent number: 6521142
    Abstract: The present invention relates to fire-resistant hydraulic fluids. More particularly, the invention relates to fire-resistant hydraulic fluid compositions comprising the combination of a trialkoxyalkyl-phosphate, a diluent selected from the group consisting of a natural triglyceride, a synthetic ester, and a polypropylene glycol, and a high molecular weight polymer.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: February 18, 2003
    Assignee: Houghton Technical Corp.
    Inventors: Rosauro V. Holgado, Richard Adams, Chan Talaty
  • Trialkoxyalkylphosphate-based fire resistant fluid containing triglyceride
    Patent number: 6156228
    Abstract: The present invention relates to fire-resistant hydraulic fluids. More particularly, the invention relates to fire-resistant hydraulic fluid compositions comprising the combination of a trialkoxyalkyl-phosphate, a diluent selected from the group consisting of a natural triglyceride, a synthetic ester, and a polypropylene glycol, and a high molecular weight polymer.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: December 5, 2000
    Assignee: Houghton International, Inc.
    Inventors: Rosauro V. Holgado, Richard Adams, Chan Talaty
  • Water-based hydraulic fluid
    Patent number: 4481125
    Abstract: Water-based hydraulic fluid for use in industrial hydraulic systems comprising (1) a polyether-based thickener, (2) a lubricant modifier (3) a dispersant, (4) an EP additive, and (5) water. Preferably, the thickener is a polyether polyol capped with an alpha olefin oxide; the lubricant modifier is a combination of a hydrocarbon oil, a fatty alcohol and a glycol; the dispersant is the reaction product of an alkenyl succinic anhydride and a dialkyl alkanolamine, and the EP additive is a dialkyl dithiophosphate.
    Type: Grant
    Filed: June 29, 1983
    Date of Patent: November 6, 1984
    Assignee: E.F. Houghton & Co.
    Inventor: Rosauro V. Holgado
  • Dual-purpose hydraulic fluid
    Patent number: 4209414
    Abstract: A synthetic dual-purpose fluid for use as a hydraulic fluid and in metal cutting operations, particularly where hydraulic fluid leakage cannot be tolerated in hydraulically operated machines designed for metal cutting purposes. The fluid contains in combination 50-70% of an alkylene glycol, 10 to 25% of an alkanol amine, up to 10% boric acid, and 2 to 25% of a phosphate-modified condensation product of a fatty acid and a dialkanolamine.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: June 24, 1980
    Assignee: E. F. Houghton and Co.
    Inventors: Rosauro V. Holgado, Philip Rakoff
  • Oil-in-water emulsion hydraulic fluid
    Patent number: 4010105
    Abstract: A stable, fire resistant hydraulic fluid of the oil-in-water emulsion type having the property of relatively uniform viscosity over a broad range of water contents in which the non-polar (oil) and polar (water) components are coupled by means of a combination of an emulsifier, and a mixture of a relatively high molecular weight polyglycol or alkyl substituted polyglycol and a relatively low molecular weight glycol.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: March 1, 1977
    Assignee: E. F. Houghton and Company
    Inventor: Rosauro V. Holgado