Patents by Inventor Graham Andrews
Graham Andrews 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).
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Publication number: 20020034481Abstract: Anhydrous antiperspirant formulations in which a particulate antiperspirant active is suspended in a carrier fluid can result in significant visible deposits when applied to skin or when transferred onto clothing.Type: ApplicationFiled: August 2, 2001Publication date: March 21, 2002Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: James Michael Bianchi, Kevin Ronald Franklin, Bruce Howard Glickman, Graham Andrew Turner
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Patent number: 6359491Abstract: A voltage level shifter comprises complementary transistors T1, T2 connected between a supply line vdd and an inverting input !IN. The gates of the transistors T1 and T2 receive a shifted version of the direct input signal IN from a source-follower comprising the transistors T3 and T4.Type: GrantFiled: May 10, 2000Date of Patent: March 19, 2002Assignee: Sharp Kabushiki KaishaInventors: Graham Andrew Cairns, Michael James Brownlow, Yasushi Kubota, Hajime Washio
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Publication number: 20020030653Abstract: An active matrix display comprises an active matrix 1 and a digital data driver 30 formed on a common substrate 100 by a common integration process. The driver 30 comprises a serial to parallel converter 20 having m registers forming at least one set for storing display data for m picture elements, where m is less than the number M of data lines of the matrix 1. The outputs of the registers are connected to m digital/analogue converters 21 whose outputs are connected to m bus lines 50 of an m phase analogue driver 22 in the form of a switching network. The switching network connects in turn groups of m physically adjacent data lines of the matrix 1 to the m bus line, respectively.Type: ApplicationFiled: September 4, 2001Publication date: March 14, 2002Inventors: Graham Andrew Cairns, Michael James Brownlow
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Publication number: 20020030620Abstract: Multi-format sampling registers, digital to analogue converters, data drivers and active matrix displays are provided which provide power saving in lower resolution formats by disabling circuitry which is not required in those formats.Type: ApplicationFiled: August 30, 2001Publication date: March 14, 2002Inventors: Graham Andrew Cairns, Michael James Brownlow
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Publication number: 20020027541Abstract: A driving arrangement for an active matrix liquid crystal display comprises: (a) a multi-format digital data driver arranged to operate in a plurality of different display modes, to receive digital input data in a plurality of different formats, and to drive data lines of the liquid crystal display so as to cause an image to be displayed in the display corresponding to said input data; and (b) data analysis means arranged to receive said digital input data, to determine the format of the input data, and to control the data driver to operate in the display mode corresponding to the format of the input data. There is provided a method of reducing power required to display a sequence of images on a liquid crystal display, in which images are analysed and if consecutive Images are substantially the same, then the liquid crystal display is not updated with the subsequent image.Type: ApplicationFiled: August 30, 2001Publication date: March 7, 2002Inventors: Graham Andrew Cairns, Michael James Brownlow, Andrew Kay, Harry Garth Walton
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Publication number: 20020022010Abstract: The sensory attributes and/or visibility of deposits of wax-structured antiperspirant or deodorant sticks in the form of emulsions can vary significantly depending on the formulation employed.Type: ApplicationFiled: May 4, 2001Publication date: February 21, 2002Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Bruce Steven Emslie, Graham Andrew Turner
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Publication number: 20010043496Abstract: A static clock pulse generator comprises a plurality of stages 1,2, each of which comprises a D-type flip-flop 3 and a gating circuit 4. The flip-flop 3 supplies output signals Q of the stage which are also used as gating signals for the gating circuit 4 of the following stage. The gating circuit 4 supplies a signal to the data input D of the flip-flop 3 when its gating input G is active and a clock pulse is present on the clock input CK or !CK. An asynchronous reset signal R is supplied to the flip-flop 3 from the following stage.Type: ApplicationFiled: March 28, 2001Publication date: November 22, 2001Inventors: Graham Andrew Cairns, Michael James Brownlow
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Patent number: 6313320Abstract: The present invention concerns compounds of the formula wherein R1, R2, R3, R4 and R6 each represent H or an organic group of up to 20 C atoms, or any pair of R2 and R3 or R2 and R6 or R4 and R6 forms a cyclic group, and R5SO2 is a cleavable protecting group in which R5 is an organic group of up to 20 C atoms. These compounds are useful as intermediates in the synthesis of calanolide A and related antiviral compounds.Type: GrantFiled: April 25, 2000Date of Patent: November 6, 2001Assignee: Chirotech Technology, Inc.Inventors: Martin Edward Fox, Graham Andrew Meek
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Publication number: 20010018045Abstract: Soft solid antiperspirant formulations in which a particulate antiperspirant active material is suspended in a continuous phase containing a water-immiscible liquid which is structured by specified proportions of an organic polymeric thickener and a second structurant selected from fibre-forming structurants and waxes (often other than fatty alcohols) or a mixture of both.Type: ApplicationFiled: January 12, 2001Publication date: August 30, 2001Inventors: Beng Sim Chuah, Sarah Jane Clare, Kevin Ronald Franklin, Gordon Charles Hough, Graham Andrew Turner
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Patent number: 6271783Abstract: The present invention relates to a digital-to-analog converter for converting a parallel digital input signal to a corresponding analogue output voltage, the digital-to-analogue comprising: an input arranged to receive said digital input signal; an output for outputting said corresponding analogue output voltage; and conversion means, operatively coupled to said input and said output, for moving said output voltage from a reference value to a first value and then subsequently back to said reference value, wherein the magnitude of said first value corresponds with the value of the said digital input signal, said output voltage is moved from said reference value to said first value in at least two steps via one or more intermediate values, and said output voltage is moved from said first value back to said reference value in at least two steps via one or more intermediate values.Type: GrantFiled: March 9, 1999Date of Patent: August 7, 2001Assignee: Sharp Kabushiki KaishaInventors: Graham Andrew Cairns, Michael James Brownlow
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Patent number: 6268841Abstract: A data line driver is provided for driving M data lines of a matrix display such as a liquid crystal display. The driver comprises x data line circuits whose inputs are connected to a common input for receiving a serial image signal, where x is less than M. Each of the data line circuits comprises a store for storing one picture element of image data at a time, a multiplexer for storing in the store in sequence image data for m picture elements from at least part of a line of image data, where m is greater than one, and a demultiplexer for directing a line signal corresponding to the image data stored in the store to each of m of the M data lines in sequence.Type: GrantFiled: January 7, 1999Date of Patent: July 31, 2001Assignee: Sharp Kabushiki KaishaInventors: Graham Andrew Cairns, Michael James Brownlow, Andrew Kay
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Patent number: 6266041Abstract: An active matrix drive circuit includes a clock element arranged so as to generate a clock signal CK; a shift register including a chain of control shift elements having respective outputs; and a series of driver stages coupled to said outputs and controllable by control signals for sampling an input signal and for supplying the sampled signals to a corresponding series of lines. Each of the driver stages is associated with a respective one of the control shift elements and is locally controlled by a plurality of different control signals derived from signals generated by said one control shift element and/or at least one local control shift element in the vicinity of said one control shift element in the shift register in response to clocking of the shift register by the clock signal CK.Type: GrantFiled: April 3, 1998Date of Patent: July 24, 2001Assignee: Sharp Kabushiki KaishaInventors: Graham Andrew Cairns, Michael James Brownlow
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Patent number: 6262598Abstract: A voltage level shifter comprises complementary transistors T1, T2 connected between a supply line vdd and an inverting input !IN. The gate of the transistor T1 is connected to a direct signal input IN whereas the gate of the transistor T2 receives a shifted version of the direct input signal from a source-follower comprising the transistors T3 and T4. The level shifter may also be embodied as a differential cross-coupled sense amplifier with the sources of the drain load transistors being crossed coupled to the differential inputs.Type: GrantFiled: March 3, 2000Date of Patent: July 17, 2001Assignee: Sharp Kabushiki KaishaInventors: Graham Andrew Cairns, Michael James Brownlow, Yasushi Kubota, Hajime Washio
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Patent number: 6261543Abstract: Antiperspirant emulsions which exhibit excellent phase stability even in the presence of an effective concentration of antiperspirant salts in solution and which are thickened are obtainable by dispersing a hydratable polymer and particularly an amphoteric or cationic modified starch in an aqueous emulsion forming a viscous emulsion, often at an elevated temperature, subjecting the emulsion to high shear, thereby reducing the droplet size of the dispersed oil phase, bringing the emulsion to below 40° C. and introducing the antiperspirant, preferably in aqueous solution. The viscous emulsion subjected to high shear mixing desirably has a Sheer Stress of 10 to 500 Pa. The resultant emulsions show good phase stability even when they contain aluminium/ zirconium antiperspirant salts that promote instability and even at elevated storage temperatures such as at 50° C.Type: GrantFiled: October 12, 1999Date of Patent: July 17, 2001Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventors: Neil Robert Fletcher, Miyuki Kanda, Howard Allen Ketelson, Graham Andrew Turner
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Patent number: 6236256Abstract: A voltage level converter for converting an input signal at a first voltage level to an output signal at a second voltage level, the converter comprises: an input for receiving said input signal; an output for outputting said output signal; a circuit node; precharge means for charging or discharging said circuit node to a third voltage level during a first time period by connection of said circuit node to a first voltage supply; isolation means for isolating said circuit node from said first voltage supply during a second time period; input means for changing the voltage at said circuit node in dependence on the voltage at said input during a third time period; and output means arranged so that the voltage at said output depends on the voltage at said circuit node.Type: GrantFiled: March 19, 1999Date of Patent: May 22, 2001Assignee: Sharp Kabushiki KaishaInventors: Michael James Brownlow, Graham Andrew Cairns
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Patent number: 6232946Abstract: A data line driver circuit for an active matrix liquid crystal display comprises a distributed controller in the form of a control shift register comprising a chain of control DFF's and associated detection logic. Furthermore the drive circuit includes a respective driver stage under the control of each control DFF for sampling the n-bit digital input signal and for supplying a drive signal to a corresponding data line. Each of the driver stages incorporates an n-bit vertically connected sample shift register composed of DFF's and associated 2:1 multiplexers which are used to provide an input either from the relevant bit line of the n-bit input data bus or from the output of the preceding DFF. In operation the n-bits of the input signal are supplied in parallel to the n inputs of the DFF's in a sampling mode, and the n-bits are shifted along the sample shift register towards the output of the shift register in a shifting mode.Type: GrantFiled: April 3, 1998Date of Patent: May 15, 2001Assignee: Sharp Kabushiki KaishaInventors: Michael James Brownlow, Graham Andrew Cairns, Andrew Kay
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Patent number: 6211219Abstract: A class of substituted aminocyclohexane derivatives are selective agonists of 5-HT1-like receptors, being potent agonists of the human 5-HT1D&agr; receptor subtype while possessing at least a 10-fold selective affinity for the 5-HT1D&agr; receptor subtype relative to the 5-HT1D&bgr; subtype; they are therefore useful in the treatment and/or prevention of clinical conditions, in particular migraine and associated disorders, for which a subtype-selective agonist of 5-HT1D receptors is indicated, while eliciting fewer side-effects, notably adverse cardiovascular events, than those associated with non-subtype-selective 5-HT1D receptor agonists.Type: GrantFiled: January 4, 1999Date of Patent: April 3, 2001Assignee: Merck Sharp & Dohme Ltd.Inventors: Angus Murray MacLeod, Graham Andrew Showell, Leslie Joseph Street
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Patent number: 6154121Abstract: A non-linear digital-to-analog converter includes: a k bit parallel input; a decoding circuit having M inputs connected to M most significant bits of the parallel input, the decoding circuit being arranged to connect first and second consecutive reference inputs among 2.sup.m +1 reference inputs to first and second outputs, respectively, where M>m; and a variable resolution linear digital-to-analog converter having first and second reference inputs connected to the first and second outputs of the decoding circuit, respectively, and further having N digital inputs connected to N least significant bits of the parallel input, where (M+N)>k.Type: GrantFiled: January 12, 1999Date of Patent: November 28, 2000Assignee: Sharp Kabushiki KaishaInventors: Graham Andrew Cairns, Michael James Brownlow
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Patent number: 6140347Abstract: A class of compounds of formula (I) wherein Z, E, Q, T, U, V, W, M, R.sup.1, R.sup.7 and R.sup.8 are as defined herein; are selective agonists of 5-HT.sub.1 -like receptors, being potent agonists of the human 5-HT.sub.1D.alpha. receptor subtype whilst possessing at least a 10-fold selective affinity for the 5-HT.sub.1D.alpha. receptor subtype relative to the 5-HT.sub.1D.beta. subtype; they are therefore useful in the treatment and/or prevention of clinical conditions, in particular migraine and associated disorders, for which a subtype-selective agonist of 5-HT.sub.1D receptors is indicated, whilst eliciting fewer side-effects, notably adverse cardiovascular events, than those associated with non-subtype-selective 5-HT.sub.1D receptor agonists.Type: GrantFiled: October 14, 1998Date of Patent: October 31, 2000Assignee: Merck Sharp & Dohme Ltd.Inventors: Jose Luis Castro Pineiro, Andrew Madin, Joseph George Neduvelil, Graham Andrew Showell, Leslie Joseph Street, Monique Bodil Van Niel
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Patent number: 6127388Abstract: A class of substituted azetidine, pyrrolidine and piperidine derivatives of Formula I are selective agonists of 5-HT.sub.1 -like receptors, being potent agonists of the human 5-HT.sub.1D.alpha. receptor subtype whilst possessing at least a 10-fold selective affinity for the 5-HT.sub.1D.alpha. receptor subtype relative to the 5-HT.sub.1D.beta. subtype; they are therefore useful in the treatment and/or prevention of clinical conditions, in particular migraine and associated disorders, for which a subtype-selective agonist of 5-HT.sub.1D receptors is indicated, whilst eliciting fewer side-effects, notably adverse cardiovascular events, than those associated with non-subtype-selective 5-HT.sub.1D receptor agonists.Type: GrantFiled: October 26, 1998Date of Patent: October 3, 2000Assignee: Merck Sharp & Dohme Ltd.Inventors: Sylvie Bourrain, Angus Murray MacLeod, Graham Andrew Showell, Leslie Joseph Street