Patents by Inventor Keith Brown

Keith Brown 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: 5746779
    Abstract: Quaternized blue anthraquinone compounds of Formula I ##STR1## wherein R.sub.1 and R.sub.2 are methyl and R.sub.3 is propyl, or R.sub.1 and R.sub.2 are ethyl and R.sub.3 is methyl and A.sup.- is a cosmetically acceptable anion, when employed in an isatin/amine dye system for the dyeing of hair enable the hair colorist to develop a full range of shades for the isatin/amine dye system. The compound of Formula I wherein R1 and R2 are methyl and R3 is propyl is preferred. Compositions and a method of use employing same are disclosed.
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: May 5, 1998
    Assignee: Bristol-Myers Squibb Company
    Inventor: Keith Brown
  • Patent number: 5181386
    Abstract: Cryogenic cooling apparatus comprising an inlet path through which refrigerant gas is caused to flow, a Joule-Thomson expansion nozzle which communicates with the inlet path and in which, in use, a proportion of the refrigerant gas is caused to liquefy and an outlet path communicating with the outlet of the expansion nozzle, the inlet path being in heat exchange relationship with the outlet path. An elongate valve needle cooperates with the outlet side of the expansion nozzle and together with the latter constitutes a valve. A sensor is disposed in the space on the outlet side of the expansion nozzle and is arranged progressively to close the valve as the amount of liquid refrigerant in contact with it increases. The valve needle defines a bypass passage which extends along its entire length and remains open at all times. The apparatus is accommodated within a container, to the outer surface of a portion of the wall of which a thermal load is connected.
    Type: Grant
    Filed: August 7, 1991
    Date of Patent: January 26, 1993
    Assignee: The Hymatic Engineering Company Limited
    Inventor: Keith Brown
  • Patent number: 5173085
    Abstract: A hair dyeing process which comprises of steps of contacting the hair to be dyed with an aqueous solution of a metal salt that promotes melanogenses in air. Before or after the aforementioned step contacting the hair with a solution of 5,6-dihydroxyindole, rinsing the hair between the two contacting steps, maintaining the contact with the second-used solution until a desired darker color is obtained, rinsing or shampooing the hair, then contacting the hair with a solution of hydrogen peroxide until the desired color shade is obtained, and then again rinsing the hair.
    Type: Grant
    Filed: January 29, 1991
    Date of Patent: December 22, 1992
    Assignee: Clairol Incorporated
    Inventors: Keith Brown, Bryan P. Murphy, Leszek J. Wolfram
  • Patent number: 5042987
    Abstract: Hair on a live head is treated with metal ion in a pretreatment step then subjected to an oxidative or autooxidative dyeing step in which scalp staining occurs. Between the pretreatment step and the dyeing step the scalp of the live head is subjected to vigorous massage, rubbing, combing or brushing for a time sufficient to reduce scalp staining, or sufficient time is permitted to elapse between the pretreatment step of the dyeing step to reduce scalp staining, or a combination of these two procedures is employed.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: August 27, 1991
    Assignee: Clairol, Inc.
    Inventor: Keith Brown
  • Patent number: 5036859
    Abstract: An apparatus which detects urination by a user includes a urine sensing pad for placement over the pubic and/or perianal areas of a user. The sensing pad includes a pair of electrodes on a backing sheet, and an absorbent cover sheet which is glued or heat sealed to the backing sheet. An indicator box is carried by the user and coupled to the sensing pad for generating a digitally encoded signal when urine moistens the pad and completes a circuit which includes the electrodes. Either a local alarm or remote signal is triggered by the indicator.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: August 6, 1991
    Assignee: Travis International, Inc.
    Inventor: Keith A. Brown
  • Patent number: 5032138
    Abstract: The invention provides compositions and methods for oxidative hair dyeing utilizing a chlorite salt as the oxidizing agent.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: July 16, 1991
    Assignee: Clairol Incorporated
    Inventors: Leszek Wolfram, Thomas Schultz, Alice Mayer, Keith Brown
  • Patent number: 4822086
    Abstract: A door security guard device having adjustable telescoping elongated members permanently mounted on the door and being spring urged towards the surface of said door for storage when said device is not in use and for assuring a secure locking engagement when said device is in operation.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: April 18, 1989
    Inventor: N. Keith Brown
  • Patent number: 4738260
    Abstract: An apparatus for detecting unintentional urination by a user includes an elongated belt of a liquid impermeable flexible material to which a urine sensing pad is detachably mounted. An electrical circuit carried by the belt, which may include a transmitter for sending a encoded signal to a receiver at a remote location, is responsive to the detection of urine by the urine sensing pad to provide an indication of this condition. The electrical circuitry is shielded from corrosive urine by the belt assembly. In one form, the urine sensing pad is detachably mounted to the belt by a combination of hook and eye fabric and snap fittings. Also, the urine sensing pad may be enclosed by a sheath of soft liquid absorbent material. In another form, the urine sensing pad is contained within a paper envelope.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: April 19, 1988
    Assignee: Travis Industries, Inc.
    Inventor: Keith A. Brown
  • Patent number: 4559057
    Abstract: A process and composition for coloring human hair on the head with pigments that employ a dispersion of pigment or pigments in an aqueous alcoholic liquid medium that contains a cationic polymer that is compatible with the aqueous alcoholic medium.
    Type: Grant
    Filed: July 1, 1983
    Date of Patent: December 17, 1985
    Assignee: Clairol Incorporated
    Inventors: Herman Bogaty, Keith Brown, Norman P. Loveless, Leszek J. Wolfram
  • Patent number: 4341028
    Abstract: The present invention is directed to a visible information management system which includes a notebook having disposed therein a plurality of pivotal passive pressure clips. Each of the pressure clips are adapted to hold therein an index card having information printed thereon. Each of the pressure clips may also be labeled in order that the cards held therein may be identified. The index cards are held in the pressure clips by virtue of an overlapping flap which forms a clip for holding under pressure an index card inserted therein. One side of the index card easily slips into the clip portion of the pivotal passive pressure clip. Since there are a plurality of pressure clips disposed in the notebook, a plurality of index cards may be slipped into the respective pressure clips within the notebook.
    Type: Grant
    Filed: May 5, 1981
    Date of Patent: July 27, 1982
    Inventor: Keith Brown
  • Patent number: 4036592
    Abstract: In a catalytic method for selectively detecting carbon monoxide in the presence of hydrogen in an oxygen-containing atmosphere, such as may be used in monitoring exhaust gases from combustion processes, the catalyst is a platinum-rhodium alloy containing not less than about 10% rhodium. The catalyst is maintained at a temperature such that it will cause combustion of carbon monoxide but will not readily cause combustion of hydrogen, the thermal effect on the catalyst resulting when a test atmosphere is brought into contact with it being sensed to provide a measure of the carbon monoxide concentration in that atmosphere.
    Type: Grant
    Filed: May 28, 1975
    Date of Patent: July 19, 1977
    Assignee: National Research Development Corporation
    Inventors: David Keith Brown, David William Dabill, Jack Graham Firth, Alan Jones, Thomas Alwyn Jones
  • Patent number: 3943409
    Abstract: A monitor assembly comprising an indicator, such as a lamp, operable when a ground fault occurs in a protected circuit to show that the circuit has been interrupted. A separate power source is provided for the indicator circuit to keep the lamp lit throughout the time the protected circuit is interrupted, with electronic switching means in the indicator circuit to turn on the indicator lamp upon receipt of a voltage signal from the ground fault interruption circuit indicating interruption of the protected circuit. A test circuit is provided, also powered by the separate power source, to test operation of the ground fault interruption circuit. A manually operated switch is provided to energize the test circuit. For convenience, the indicator is described in this embodiment as a lamp but it may be any electrically operable indicating means, audible as well as visual.
    Type: Grant
    Filed: August 13, 1974
    Date of Patent: March 9, 1976
    Assignee: Square D Company
    Inventor: William Keith Brown
  • Patent number: RE34748
    Abstract: Cryogenic cooling apparatus comprising an inlet path through which refrigerant gas is caused to flow, a Joule-Thomson expansion nozzle which communicates with the inlet path and in which, in use, a proportion of the refrigerant gas is caused to liquefy and an outlet path communicating with the outlet of the expansion nozzle, the inlet path being in heat exchange relationship with the outlet path. An elongate valve needle cooperates with the outlet side of the expansion nozzle and together with the latter constitutes a valve. A sensor is disposed in the space on the outlet side of the expansion nozzle and is arranged progressively to close the valve as the amount of liquid refrigerant in contact with it increases. The valve needle defines a bypass passage which extends along its entire length and remains open at all times. The apparatus is accommodated within a container, to the outer surface of a portion of the wall of which a thermal load is connected.
    Type: Grant
    Filed: November 5, 1993
    Date of Patent: October 4, 1994
    Assignee: The Hymatic Engineering Company Limited
    Inventor: Keith Brown