Patents by Inventor C. Allen

C. Allen 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: 4963685
    Abstract: Novel Tetrahydroisoquino[2,1-c][1,3]benzodiazepines are disclosed having the formula ##STR1## where X and Y are each independently hydrogen, halogen, loweralkyl, loweralkoxy or --CF.sub.3, and R is hydrogen or loweralkyl, and the pharmaceutically acceptable acid addition salts thereof and where applicable the geometric and optical isomers and racemic mixtures thereof. The compounds of this invention display utility in enhancing memory.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: October 16, 1990
    Assignee: Hoechst-Roussel Pharmaceuticals, Inc.
    Inventors: Lawrence L. Martin, Richard C. Allen
  • Patent number: 4960631
    Abstract: A laminated transparency includes a flexible epoxy moisture seal about the periphery of the transparency. The edge of the transparency may be cleaned and primed with a silane surface treatment.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: October 2, 1990
    Assignee: PPG Industries, Inc.
    Inventors: Patricia B. Walters, David C. Allen
  • Patent number: 4959378
    Abstract: There are described compounds of the formula ##STR1## where R is hydrogen, loweralkyl, arylloweralkyl or loweralkylcarbonyl;R.sub.1 is hydrogen, loweralkyl or loweralkylcarbonyl; andn is 0 or 1;which compounds are useful as topical antiinflammatory agents for the treatment of various dermatoses.
    Type: Grant
    Filed: October 24, 1989
    Date of Patent: September 25, 1990
    Assignee: Hoechst-Roussel Pharmaceuticals Inc.
    Inventors: Richard C. Allen, Joseph T. Klein, Richard C. Effland
  • Patent number: 4956650
    Abstract: An improved pattern generation system. The pattern generation system of the present invention discloses an improved optical system for correcting problems of astigmatism and ellipticity in a radiant energy beam used for generating patterns on a workpiece. The present invention further discloses improved control circuitry for controlling modulation of said beams. The control circuitry corrects for problems of isofocal bias caused by non-linearities in the turn-on/turn-off of the beams.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: September 11, 1990
    Assignee: ATEQ Corporation
    Inventors: Paul C. Allen, Robin Teitzel, Timothy Thomas
  • Patent number: 4929622
    Abstract: Novel 2,6-methanopyrrolo-3-benzazocines, intermediates, processes for the preparation thereof, and methods for alleviating pain utilizing compounds or compositions thereof are disclosed.
    Type: Grant
    Filed: November 16, 1988
    Date of Patent: May 29, 1990
    Assignee: Hoechst-Roussel Pharmaceuticals, Inc.
    Inventors: Richard C. Allen, David G. Wettlaufer
  • Patent number: 4925601
    Abstract: A process for making a melt-blown nonwoven polymeric web for use as a liquid filter medium includes increasing the air (fluid) flow and the forming distance to produce a filter medium that is more bulky and more permeable and therefore resists plugging. The melt-blown process parameters include a polymer through-put between 1.8 and 2.9 PIH, a polymer melt temperature between 530.degree. and 600.degree. F., and air flow rate between 200 and 265 SCFM per square inch, air temperature between 500.degree. and 600.degree. F., forming distance between 12 and 23 inches, and a collector vacuum between 0.5 and 1.0 inch of water.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: May 15, 1990
    Assignee: Kimberly-Clark Corporation
    Inventors: Clifford M. Vogt, Nancy D. Twyman, Roe C. Allen, Jr.
  • Patent number: 4923288
    Abstract: This invention relates to a device for electrooptic modulation of an optical beam. The device is a laminate comprising a coherent film of a conjugated polymer having semi-conducting properties as the active component laminated with two or more layers of electrically conducting, insulating or semi-conducting materials. At least the active component in the laminate is capable of interacting with the optical beam when under the influence of an electric signal and thereby result in a modulated beam. Means are provided for (i) establishing electrical contact with one or more layers of the laminate so as to enable an electrical signal to be applied across the active component and (ii) detection of the extent of modulation of the modulated beam emerging from the active component layer.
    Type: Grant
    Filed: May 20, 1988
    Date of Patent: May 8, 1990
    Assignee: The British Petroleum Company p.l.c.
    Inventors: Philip C. Allen, Jeremy H. Burroughes, Richard H. Friend, Alan J. Harrison
  • Patent number: 4908361
    Abstract: Novel Tetrahydroisoquino[2,1-c][1,3]benzodiazepines are disclosed having the formula ##STR1## where X and Y are each independently hydrogen, halogen, loweralkyl, loweralkoxy or --CF.sub.3, and R is hydrogen or loweralkyl, and the pharmaceutically acceptable acid addition salts thereof and where applicable the geometric and optical isomers and racemic mixtures thereof. The compounds of this invention display utility in enhancing memory.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: March 13, 1990
    Assignee: Hoechst-Roussel Incorporated
    Inventors: Lawrence L. Martin, Richard C. Allen
  • Patent number: 4893712
    Abstract: A can package comprising a plurality of cans, preferably twelve, including a flat carrier in the form of a sheet having openings stretched over the upper ends of the cans and a tubular banding strap of plastic material stretched about the periphery of the group of cans and bonded along one edge to the periphery of the carrier. The band includes an integral handle.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: January 16, 1990
    Assignee: Owens-Illinois Plastic Products Inc.
    Inventors: Fred C. Allen, Scott W. Steele
  • Patent number: 4876307
    Abstract: Plasticized compositions exhibiting enhanced thermal processability are produced by substantially saturating a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon with water at the melting point of the plasticized composition.
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: October 24, 1989
    Assignee: Shell Oil Company
    Inventor: Robert C. Allen
  • Patent number: 4868094
    Abstract: This invention relates to poly(acetylene) films having localized zones of a material other than poly(acetylene) with modified optical and electrical properties. The films are formed by selectively irradiating discrete areas of a film of a precursor polymer followed by heating of the irradiated precursor polymer to transform the non-irradiated areas into poly(acetylene). The resultant product has localized zones of modified electrical and optical properties which are useful in the semiconductor industries and in optical devices.
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: September 19, 1989
    Inventor: Philip C. Allen
  • Patent number: 4861225
    Abstract: An apparatus for stacking a plurality of articles in a side-to-side relation. The articles are conveyed in an upright end-to-end relation on a conveyor and a bin or article receiving member is positioned adjacent the downstream end of the conveyor and individually receives each article discharged from the conveyor. The bin includes a bottom wall and a rear wall and the bin is movable between a receiving position where the bottom wall extends downwardly and outwardly from the downstream end of the conveyor, to a discharge position where the bottom wall is disposed substantially horizontal. Each article being received within the bin is held in an upright position and is transferred laterally within the bin against a movable support plate, and each succeeding article received in the bin is transferred in a similar manner against the preceding article to form a stack.
    Type: Grant
    Filed: April 6, 1987
    Date of Patent: August 29, 1989
    Assignee: Dorner Mfg. Corp.
    Inventors: Wolfgang C. Dorner, Michael C. Allen, Mark C. Wedell, Michael A. Hosch
  • Patent number: 4859757
    Abstract: Novel, substantially amorphous copolymers of propylene and ethylene are disclosed. The polymers have properties which make them applicable for use, e.g., as hot melt adhesives and as blending components in roofing materials.
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: August 22, 1989
    Assignee: Rexene Products Company
    Inventors: Brian J. Pellon, George C. Allen, Michael P. Hughes
  • Patent number: 4847340
    Abstract: A novel highly efficient process is disclosed for the production of substantially amorphous ethylene-propylene copolymers. The polymers have properties which make them applicable for use, e.g., as hot melt adhesives, as blending components in roofing materials, and as cable and wire flooding agents.
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: July 11, 1989
    Assignee: Rexene Products Company
    Inventors: George C. Allen, Brian J. Pellon, Michael P. Hughes
  • Patent number: 4823560
    Abstract: An engine or heat pump for a refrigeration system employing a first elongated expansion-compression device defining a pair of chambers, each having a linearly movable piston therein which are axially interconnected by a hollow cylinder. A second expansion-compression device is mounted within the cylinder. Conduit means are provided, one extending into each end of the first device, through the associated piston and into the cylinder. The first device forces working fluid received through the device to provide fluid under relatively high pressure to the power and work loops of a refrigeration system, while the second device actuated by the first device draws relatively low pressure fluid from the system and returns it under pressure to a source.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: April 25, 1989
    Assignee: E Squared Inc.
    Inventors: C. Allen Rowley, Hector M. Gutierrez
  • Patent number: 4815589
    Abstract: A can package comprising a plurality of cans, preferably twelve, including a flat carrier in the form of a sheet having openings stretched over the upper ends of the cans and a tubular banding strap of plastic material stretched about the periphery of the group of cans and bonded along one edge to the periphery of the carrier. The band includes an integral handle.
    Type: Grant
    Filed: October 14, 1987
    Date of Patent: March 28, 1989
    Assignee: Owens-Illinois Plastic Products Inc.
    Inventors: Fred C. Allen, Scott W. Steele
  • Patent number: 4809860
    Abstract: This container assembly is closed by removable cover and includes a base formed by two transparent nested cup shaped inner and outer members spaced to define a closed thermal insulation chamber therebetween. The inner member has a diametral partition structure dividing this member into two compartments. The cover has two spaced nipples to which may be connected respectively to an aspiration tube and a needle assembly for discharging fluids or a wash from a follicle or another similar site, into the chambers when the cover is rotated to either one of two positions on the base. The cover may be replaced by a transparent, imperforate cover for reviewing the contents of the compartments by a microscope to detect the presence of an oocyte.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: March 7, 1989
    Assignee: Mark L. Anderson
    Inventor: Thomas C. Allen
  • Patent number: 4810244
    Abstract: This surgical trocar assembly has the needle of a stylet removably disposed inside a first cannula which is inside a second cannula in a concentric array. The needle has a sharp point to pierce a body part to be drained of fluids. A first fitting on the first cannula has a first nipple to engage an aspiration tube when the needle is removed. The fitting has a tenon to engage in a tubular member of a Y-shaped joint structure. The tubular member has a lateral second nipple to engage an end of a wash fluid feed tube. A second fitting on the second cannula engages on the tubular member so that wash water passes through the tubular member between the first and second cannulas. The first cannula has a tapered sharp open end to enter the body part for aspirating fluids therefrom. The second cannula has a tapered end to engage the outside of the first cannula near its tapered open end, and further has lateral openings to discharge wash fluid from the second cannula to the body part.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: March 7, 1989
    Assignee: Mark L. Anderson
    Inventor: Thomas C. Allen
  • Patent number: 4798782
    Abstract: This invention relates to poly(acetylene) films having localized zones of a material other than poly(acetylene) with modified optical and electrical properties. The films are formed by selectively irradiating discrete areas of a film of a precursor polymer followed by heating of the irradiated precursor polymer to transform the non-irradiated areas into poly(acetylene). The resultant product has localized zones of modified electrical and optical properties which are useful in the semiconductor industries and in optical devices.
    Type: Grant
    Filed: January 15, 1987
    Date of Patent: January 17, 1989
    Assignee: The British Petroleum Company p.l.c.
    Inventor: Philip C. Allen
  • Patent number: 4797696
    Abstract: An apparatus for splitting radiant energy beams produced by a laser or other light source. The apparatus comprises a plurality of mirrors, each aligned to reflect a beam or plurality of beams from one mirror to the next. Each mirror comprises a glass body with a layer of 50% reflective coating and a layer of anti-reflecting coating on one side of the body. A layer of 100% reflective coating is on the other side of the body. A beam is, thus, 50% reflected from the first reflective layer and allowed 50% to pass through the layer. The remainder of the beam is reflected from the 100% reflective layer.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: January 10, 1989
    Assignee: ATEQ Corporation
    Inventors: Paul C. Allen, Paul A. Warkentin