Patents by Inventor P. Alexander

P. Alexander 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: 5633257
    Abstract: Compounds of general formula (1) ##STR1## are described wherein Y is a halogen atom or a group --OR.sup.1, wherein R.sup.1 is an optionally substituted alkyl group; X is --O--, --S--, or --N(R.sup.6), wherein R.sup.6 is a hydrogen atom or an optionally substituted alkyl group; R.sup.2 is an optionally substituted cycloalkyl or cycloalkenyl group; R.sup.3 and R.sup.4, which may be the same or different, is each a hydrogen atom or an optionally substituted alkyl, --CO.sub.2 R.sup.7 (wherein R.sup.7 is a hydrogen atom, am optionally substituted alkyl, aralkyl, aryl, aryloxyalkyl, alkanoyloxyalkyl or aroyloxyalkyl group), --CONR.sup.8 R.sup.9 (where R.sup.8 and R.sup.9, which may be the same or different, is as defined for R.sup.7), --CSNR.sup.8 R.sup.9, --CN or --CH.sub.2 CN group; Z is --(CH.sub.2).sub.n -- where n is zero or an integer 1, 2 or 3; R.sup.
    Type: Grant
    Filed: March 9, 1994
    Date of Patent: May 27, 1997
    Assignee: Celltech Therapeutics Limited
    Inventors: Graham J. Warrellow, Valerie A. Cole, Rikki P. Alexander
  • Patent number: 5622977
    Abstract: Compounds of the general formula (1) ##STR1## are described wherein Y is halogen or --OR.sup.1, where R.sup.1 is a substituted or unsubstituted alkyl; X is --O--, --S-- or --N(R.sup.8)--, where R.sup.8 is hydrogen or alkyl; R.sup.2 is substituted or unsubstituted alkyl, alkenyl, cycloalkyl or cycloalkenyl; R.sup.3 is hydrogen, halogen or --OR.sup.9, where R.sup.9 is hydrogen or substituted or unsubstituted alkyl, alkenyl, alkoxyalkyl, or alkanoyl, or formyl, carboxamido or thiocarboxamido; R.sup.4 and R.sup.5, which may be the same or different, are each --(CH.sub.2).sub.n Ar, where Ar is a monocyclic or bicyclic aryl group or monocyclic or bicyclic heteroaryl and n is integer of 0 to 3; R.sup.6 is hydrogen or substituted or unsubstituted alkyl; R.sup.7 is hydrogen or substituted or unsubstituted alkyl; and the salts, solvates, hydrates and N-oxides thereof.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 22, 1997
    Assignee: Celltech Therapeutics Limited
    Inventors: Graham J. Warrellow, Ewan C. Boyd, Rikki P. Alexander, John C. Head
  • Patent number: 5608070
    Abstract: An enantioselective multi-stage process is described which uses as a starting material an .alpha.,.beta.-unsaturated olefin of formula (1):Ar--CH.dbd.C(R.sup.4)COAux (1)where Ar and R.sup.4, which may be the same or different, is each a monocyclic or bicyclic aryl group optionally containing one or more heteroatoms selected from oxygen, sulphur or nitrogen atoms; and Aux is the residue of a chiral (R- or S-) auxiliary.In the process, the olefin is converted to a chiral triarylethane which is of use in medicine.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: March 4, 1997
    Assignee: Celltech Therapeutics Limited
    Inventors: Rikki P. Alexander, Graham J. Warrellow, John C. Head, Ewan C. Boyd, John R. Porter
  • Patent number: 5580888
    Abstract: Compounds of general formula (1) ##STR1## are described wherein Y is a halogen atom or a group --OR.sup.1, wherein R.sup.1 is an optionally substituted alkyl group; X is --O--, --S-- or --N(R.sup.6)--, where R.sup.6 is a hydrogen atom or an alkyl group; R.sup.2 is an optionally substituted alkyl, alkenyl, cycloalkyl or cycloalkenyl group; R.sup.3 and R.sup.4, which may be the same or different, is each a group --(CH.sup.2).sub.n Ar, where Ar is a monocyclic or bicyclic aryl group optionally containing one or more heteroatoms selected from oxygen, sulphur or nitrogen atoms and n is zero or an integer 1, 2 or 3; R.sup.5 is a hydrogen atom or an optionally substituted alkyl group; and the salts, solvates, hydrates and N-oxides. Compounds according to the invention are potent, selective and orally active PDE IV inhibitors and are useful in the prophylaxis and treatment of asthma.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 3, 1996
    Assignee: Celltech Therapeutics Limited
    Inventors: Graham J. Warrellow, Ewan C. Boyd, Rikki P. Alexander
  • Patent number: 5456516
    Abstract: An automotive side window system provides a mechanism for retracting and extending a side window into and away from an adjacent portion of a roof structure.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: October 10, 1995
    Assignee: ASC Incorporated
    Inventors: Michael P. Alexander, Stephen P. Tokarz
  • Patent number: 5186516
    Abstract: A power latching mechanism for use on automobile closures is disclosed, comprising a pin member, a keeper member having a hollow cylindrical body which receives the pin member, a motor for urging engagement between the pin member and the keeper member, and a spring and associated hardware for selectively retaining the pin member in the keeper member. In one embodiment, the keeper member retentively engages the pin member when the pin member is manually inserted thereinto and is also manually disengagable.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: February 16, 1993
    Assignee: ASC Incorporated
    Inventors: Michael P. Alexander, Allan J. Adams, Stephen P. Tokarz
  • Patent number: 5161852
    Abstract: A vehicle convertible top linkage assembly having improved means for controlling the articulation of the convertible top as it is raised and lowered. This linkage assembly includes a pair of pillar links that are pivotally coupled to the vehicle and a pair of balance links that control the articulation of the convertible top. The balance links are coupled to the linkage assembly by coupling means that simultaneously allow the balance links to be pivotally and longitudinally displaced. Longitudinal displacement of the balance links is accomplished by a variety of displacing means and serves the purpose of actuating the control links. These displacing means displace the balance link when the convertible top is being raised and lowered to provide various paths of movement.
    Type: Grant
    Filed: April 11, 1991
    Date of Patent: November 10, 1992
    Assignee: ASC Incorporated
    Inventors: Michael P. Alexander, William A. Sims, George A. Corder, Albert W. Harrison
  • Patent number: 5114647
    Abstract: A method for producing sanitizing compositions in compressed form which includes:a) admixing an alkali metal carbonate with a solid water soluble aliphatic carboxylic acid to form an acidic mixture,b) compressing the acidic mixture to produce a compressed form of the acidic mixture,c) crushing the compressed form to produce granules of the acidic mixture, and,d) admixing granules of the acidic mixture with an alkali metal chloroisocyanurate, and an alkali metal bicarbonate to produce a sanitizing composition.
    Type: Grant
    Filed: February 1, 1991
    Date of Patent: May 19, 1992
    Assignee: Olin Corporation
    Inventors: Kenneth J. Levesque, Roy P. Alexander
  • Patent number: 5079361
    Abstract: Cross-linking reagents which are highly specific for sulphydryl groups and react with thiols at an excellent rate. The essential feature of the reagents is at least one vinyl group conjugated with an armoatic nitrogen heterocycle. Particular examples include vinyl pyridines, vinyl pyrimidines and vinyl triazines.
    Type: Grant
    Filed: September 9, 1988
    Date of Patent: January 7, 1992
    Assignee: Celltech Limited
    Inventors: Rikki P. Alexander, Michael A. W. Eaton, Thomas A. Millican, Richard C. D. Titmas
  • Patent number: 5076016
    Abstract: The present invention is a powered sliding door system for a vehicle including a semi-rigid cable adapted to be affixed to the sliding door of a vehicle and a powered electromagnetic clutch for driving the cable longitudinally for opening and closing the sliding door.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: December 31, 1991
    Assignee: ASC Incorporated
    Inventors: Allan J. Adams, Michael P. Alexander
  • Patent number: 5045742
    Abstract: Motor for commercial and industrial applications such as golf carts and lift trucks. Features include a thin shell; stator; stator winding; and rotor. Rotor laminations have equally circumferentially spaced semi-closed slots having area for receiving conductors, and the ratio of the number of rotor lamination slots to the rotor outer diameter (measured in inches) is greater than 14.0. In one construction, this ratio is about 15.75; the ratio of the outer diameter to the rotor slot length is from about 9.04 to about 9.16; and the ratio of rotor slot depth or length to rotor slot opening width is from about 10.8 to about 12.5. Cylindrical stator lamination has a given outer diameter and a certain bore diameter determined by the distance between opposing poles. Through-bolt holes are located in the yoke, proximate the outer periphery thereof, and centered with respect to each pole. The ratio of stator pole neck minimum width to two times the yoke thickness or width is from about 0.809 to about 1.009.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: September 3, 1991
    Assignee: General Electric Company
    Inventors: Frederick J. Armstrong, Lynn E. Bradtmueller, Ronnie G. Smitley, James P. Alexander
  • Patent number: 4919377
    Abstract: A sheet dispenser and display is provided which includes a holder adapted to support a pad and a display car behind the pad, the holder being mountable on a support such as a price channel. The holder may be formed of a flat sheet of flexible material adapted for coupling to the price channel. A pair of spaced flexible prongs project from the mounting portion for receipt in apertures in the pad. A card support portion is coupled by a pair of laterally spaced legs to the mounting portion intermediate the prongs for supporting the display card. The display card may be provided with a portion which extends in a direction substantially perpendicular to the support for projecting into a store aisle.
    Type: Grant
    Filed: January 28, 1988
    Date of Patent: April 24, 1990
    Assignee: Sandy Alexander, Inc.
    Inventors: Herman P. Alexander, John D. Langwell
  • Patent number: 4917868
    Abstract: A pool chemical dispenser utilizing a flotation device to hold the dispenser on the surface of a body of water such as a swimming pool and a pool chemical-containing cartridge that fits within the flotation device is provided. The cartridge is intended to hold a fast dissolving pool chemical, such as calcium hypochlorite, and is equipped with a cartridge skirt and a cartridge skirt insert with a pool chemical tablet support grid to ensure partial immersion of the pool chemical tablet closest to the water.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: April 17, 1990
    Inventors: Roy P. Alexander, Alan H. Milford
  • Patent number: 4867196
    Abstract: An improved chemical feeder employing periodic partial immersion in a forced circulation system is provided having a soluble chemical chamber, a dissolving chamber into which the soluble chemical chamber extends and a discharge chamber in fluid flow communication with the dissolving chamber to selectively receive chemically treated water from the dissolving chamber and discharge it into a flow loop connected to the forced circulation system.
    Type: Grant
    Filed: August 31, 1988
    Date of Patent: September 19, 1989
    Assignee: Olin Corporation
    Inventors: Christopher M. Zetena, Roy P. Alexander
  • Patent number: 4819983
    Abstract: A powered latching mechanism includes a threaded pin which engages an opposed pair of rotating dogs maintained within a keeper assembly driven by an electric motor connected to the header of the windshield. The dogs are configured to have a ramped portion which permits the manual urging of the pin therepast in the event of failure of the electric motor and/or the hydraulics of the convertible top.
    Type: Grant
    Filed: September 24, 1987
    Date of Patent: April 11, 1989
    Assignee: ASC Incorporated
    Inventors: Michael P. Alexander, Allan J. Adams
  • Patent number: 4744044
    Abstract: The specification discloses a hand-held calculator particularly adapted for dimensional or measurement calculations. The calculator includes keys for indicating a different dimension system (e.g. feet, yards, meters) associated with each number inputted, enabling calculations to be performed on numbers from mixed dimension systems. All inputted measurements are converted to decimal feet internally to simplify calculations and simplify conversion structure and routines. Preferably, a dimension power (e.g. square or cubic) can also be associated with each input number as necessary; and the calculator calculates and displays the proper dimension power resulting from any calculation. Further preferably, the calculator includes a keyboard enabling lumber dimensions to be easily inputted for board feet calculations.
    Type: Grant
    Filed: June 20, 1986
    Date of Patent: May 10, 1988
    Assignee: Electronic Teacher's Aids, Inc.
    Inventors: Howard H. Stover, Kenneth E. Alexander, Fred P. Alexander
  • Patent number: 4720133
    Abstract: A manually operated convertible top structure for vehicles having a pivotal tonneau mounted rearward of the passenger compartment. The convertible top structure includes a pair of spaced rigid side rails which are interconnected by a plurality of spaced, transversely extending crossbows to form a frame work over which a flexible folding top is disposed. A pair of rear rails extending in a substantially upright orientation are pivotally mounted to the vehicle at one end and are connected by a control linkage to the side rails. The rearmost crossbow is pivotally connected to a mounting bracket attached to the vehicle. The side rails are pivotally connected to the frontmost crossbows for outward lateral movement as the top structure is lowered. An over-center lock formed of first and second links is pivotally connected between the rear rails and the rearmost crossbow for positively locking the rearmost crossbow on the tonneau when the convertible top structure is in its raised position.
    Type: Grant
    Filed: February 10, 1986
    Date of Patent: January 19, 1988
    Assignee: ASC Incorporated
    Inventors: Michael P. Alexander, William A. Sims
  • Patent number: 4702505
    Abstract: A latching mechanism for an automotive vehicle and, in particular, a convertible-type or a movable-type vehicle includes a three-dimensional, two-component positionally adjustable assembly which is mounted to the vehicle and includes a screw-type projection which is received in a keeper disposed proximate the windshield header of the vehicle. A handle is permanently affixed to the pin to facilitate rotation of the pin into and out of the keeper for latching and unlatching, as desired.
    Type: Grant
    Filed: September 6, 1984
    Date of Patent: October 27, 1987
    Assignee: ASC Incorporated
    Inventor: Michael P. Alexander
  • Patent number: D297857
    Type: Grant
    Filed: July 2, 1986
    Date of Patent: September 27, 1988
    Assignee: Olin Corporation
    Inventors: Roy P. Alexander, Richard Seager
  • Patent number: RE33861
    Abstract: An improved chemical feeder employing periodic partial immersion in a forced circulation system is provided having a soluble chemical chamber, a dissolving chamber into which the soluble chemical chamber extends and a discharge chamber in fluid flow communication with the dissolving chamber to selectively receive chemically treated water from the dissolving chamber and discharge it into a flow loop connected to the forced circulation system.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: March 31, 1992
    Assignee: Olin Corporation
    Inventors: Christopher M. Zetena, Roy P. Alexander