Patents by Inventor Colin John Harrington

Colin John Harrington 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).

  • Hydraulic fluid compositions
    Patent number: 4093554
    Abstract: Novel compounds useful in hydraulic fluid compositions as additives, as base stock or as members of a blended base stock are glycol-substituted aryl silanes of the formula: ##STR1## wherein: (A) R is aryl;(b) X is selected from the group consisting of ##STR2## in which each R.sub.2 is defined above, R' is as hereinafter defined, each R.sup.2 is independently selected from the group consisting of hydrogen, methyl and ethyl, R.sup.3 is alkyl, R.sup.4 is selected from the group consisting of diol and polyol residues, R.sup.6 is selected from the group consisting of aryl and alkyl, and n is an integer; and(c) each R' is, independently selected from the group consisting of groups of formula (A) as defined above, alkyl, aryl, and groups of the formula:-- O -- R.sup.5wherein R.sup.5 is alkyl and if the glycol-substituted aryl silane contains more than one group R.sup.
    Type: Grant
    Filed: March 26, 1975
    Date of Patent: June 6, 1978
    Assignee: Castrol Limited
    Inventors: Gerald John Joseph Jayne, Herbert Frank Askew, Colin John Harrington
  • Hydraulic fluids comprising orthosilicate esters
    Patent number: 4051053
    Abstract: As novel compounds, orthosilicate esters having the general formula: ##STR1## wherein R.sup.1 is a propylene glycol monoalkyl ether residue containing from 1 to 8 carbon atoms in the terminal alkyl group or is a tertiary alkyl group; each of R.sup.2, R.sup.3 and R.sup.4 is the same or different and is an ethylene or propylene glycol monoalkyl ether residue containing from 1 to 8 carbon atoms in the terminal alkyl group or is a tertiary alkyl group, provided that when R.sup.1 is a propylene glycol monoalkyl ether residue each of R.sup.2, R.sup.3 and R.sup.4 are also propylene glycol monoalkyl ether residues; the total number of carbon atoms in R.sup.1, R.sup.2, R.sup.3 and R.sup.4 being at least 15 and at least one of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 being a glycol monoalkyl ether residue.Also disclosed are hydraulic fluids containing the novel compounds.
    Type: Grant
    Filed: April 22, 1976
    Date of Patent: September 27, 1977
    Assignee: Castrol Limited
    Inventors: John Scotchford Elliott, Gerald John Joseph Jayne, Herbert Frank Askew, Colin John Harrington
  • Hydraulic fluids
    Patent number: 4016088
    Abstract: Novel glycol-substituted alkyl silanes useful as components of hydraulic fluids have the general formula: ##STR1## wherein R, R.sup.1, R.sup.4 and R.sup.5 are specified substituents. Hydraulic fluids containing the glycol-substituted alkyl silanes are also described.
    Type: Grant
    Filed: July 22, 1975
    Date of Patent: April 5, 1977
    Assignee: Castrol Limited
    Inventors: Gerald John Joseph Jayne, Herbert Frank Askew, Colin John Harrington
  • Hydraulic fluids
    Patent number: 3994948
    Abstract: Novel glycol-substituted alkyl silanes useful as components of hydraulic fluids have the general formula: ##EQU1## wherein R, R.sup.1, R.sup.4 and R.sup.5 are specified substituents. Hydraulic fluids containing the glycol-substituted alkyl silanes are also described.
    Type: Grant
    Filed: September 24, 1974
    Date of Patent: November 30, 1976
    Assignee: Castrol Limited
    Inventors: Gerald John Joseph Jayne, Herbert Frank Askew, Colin John Harrington