Patents Assigned to Nova
  • MITIGATION OF WAX LEVELS IN THE HIGH PRESSURE LOW DENSITY POLYETHYLENE PROCESS
    Publication number: 20170152329
    Abstract: In the high pressure polymerization of ethylene homopolymers or copolymers, conditions in the high pressure recycle system may lead to the build-up of low molecular weight oligomers and waxes. Sequentially draining knock-out pots, located downstream of a high pressure separator, at regular intervals can reduce the build-up of low molecular weight oligomers and waxes during the high pressure polymerization of alpha olefins.
    Type: Application
    Filed: May 19, 2015
    Publication date: June 1, 2017
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: James A. Auger, Craig Allan Hulet, Ross Donald Moreton, Benjamin Milton Shaw, Amanda Dolores Murphy
  • Reduction of fouling in high pressure reactors
    Patent number: 9663591
    Abstract: The Application of equations of state to experimental and literature data permits the formation of a model and phase diagram(s) that show under what conditions polyethylene is likely to precipitate out of a high pressure solution of polyethylene in supercritical ethylene. This then permits a better definition to run a high pressure reactor to reduce the likelihood of phase separation, loss of cooling and potentially decomposition of the reactor contents.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: May 30, 2017
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: William Joseph Tchir, Eric Cheluget
  • PHENOL FREE STABILIZATION OF POLYETHYLENE
    Publication number: 20170145171
    Abstract: This invention provides a process for the stabilization of thermoplastic polyolefins during melt processing operations. The stabilizer package of this invention is “phenol free” and comprises at least two selected phosphite stabilizers. In some embodiments, the process is suitable for the manufacture of polyethylene film.
    Type: Application
    Filed: November 16, 2016
    Publication date: May 25, 2017
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: Fraser D. Cole Waldie, Owen C. Lightbody, Tony Tikuisis, P. Scott Chisholm
  • TEST STRUCTURE DESIGN FOR METROLOGY MEASUREMENTS IN PATTERNED SAMPLES
    Publication number: 20170146465
    Abstract: A test structure is presented for use in metrology measurements of a sample pattern formed by periodicity of unit cells, each formed of pattern features arranged in a spaced-apart relationship along a pattern axis. The test structure comprises a test pattern, which is formed by a main pattern which includes main pattern features of one or more of the unit cells and has a symmetry plane, and a predetermined auxiliary pattern including at least two spaced apart auxiliary features located within at least some features of the main pattern, parameters of which are to be controlled during metrology measurements.
    Type: Application
    Filed: June 18, 2015
    Publication date: May 25, 2017
    Applicant: NOVA MEASURING INSTRUMENTS LTD.
    Inventors: Gilad BARAK, Oded COHEN, Igor TUROVETS
  • CONTROLLING LOCAL FLUID AGE IN A STIRRED REACTOR
    Publication number: 20170136436
    Abstract: In a stirred tank chemical reactor the mean age of the reactor contents affects a number of properties of the product, including for example the homogeneity of the product. The mean average age of the reactor contents can be determined by constructing a transparent model of the reactor and filling it with a fluid containing a fluorescent dye and having flow properties comparable to those of the reactor in use. A light is shone on the fluid as it is stirred under reaction conditions and a clear fluid flow into the model. Pictures are taken of the reactor contents and the mean fluid age of the contents of the model are determined relative to the exit age of the contents. This approach can be applied to determine for example which reactor ports to use, what agitator to use, what flow rates to use to improve reactor function.
    Type: Application
    Filed: June 4, 2015
    Publication date: May 18, 2017
    Applicant: NOVA Chemicals (International) S.A.
    Inventor: Andrew Hawryluk
  • FURNACE TUBE RADIANTS
    Publication number: 20170137722
    Abstract: A substantially linear ceramic or metallic radiant of ellipsoidal or polygonal cross section is placed proximate furnace tubes or coils in the radiant section of a fired heater to increase the radiant heat directed to the surface of the tubes or coils.
    Type: Application
    Filed: November 16, 2016
    Publication date: May 18, 2017
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: Grazyna Petela, Leslie Wilfred Benum, Jeffrey Stephen Crowe, Seyed Majid Hoseini
  • Neutron detection
    Patent number: 9651688
    Abstract: A method for detecting a neutron includes providing a first voltage to an input electrode of a microchannel plate, providing a second voltage to an output electrode of the microchannel plate, the second voltage being more positive than the first voltage, measuring a signal on the output electrode, and detecting a neutron based on a comparison of the signal at the output electrode with a baseline value.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: May 16, 2017
    Assignee: Nova Scientific, Inc.
    Inventors: Jon H. Chappell, W. Bruce Feller
  • Optical method and system for detecting defects in three-dimensional structures
    Patent number: 9651498
    Abstract: A method and system are presented for use in inspection of via containing structures. According to this technique, measured data indicative of a spectral response of a via-containing region of a structure under measurements is processed, and, upon identifying a change in at least one parameter of the spectral response with respect to a spectral signature of the via-containing region, output data is generated indicative of a possible defect at an inner surface of the via.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: May 16, 2017
    Assignee: NOVA MEASURING INSTRUMENTS LTD.
    Inventors: Gilad Barak, Elad Dotan, Alon Belleli
  • BARRIER FILM FOR FOOD PACKAGING
    Publication number: 20170130040
    Abstract: Barrier films are prepared from a blend of two high density polyethylene blend components and a high performance organic nucleating agent. The two high density polyethylene blend components have substantially different melt indices. Large reductions in the moisture vapor transmission rate of the film are observed in the presence of the nucleating agent when the melt indices of the two blend components have a ratio of greater than 10/1. The resulting barrier films are suitable for the preparation of packaging for dry foods such as crackers and breakfast cereals.
    Type: Application
    Filed: January 19, 2017
    Publication date: May 11, 2017
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: Norman Dorien Joseph Aubee, Douglas Checknita, P Scott Chisholm, Patrick Lam, Sarah Marshall, Denny Paul Sauvageau, Tony Tikuisis, Tingting Yu Chuang
  • Barrier film for food packaging
    Patent number: 9644087
    Abstract: Barrier films are prepared from a blend of two high density polyethylene blend components and a high performance organic nucleating agent. The two high density polyethylene blend components have substantially different melt indices. Large reductions in the moisture vapor transmission rate of the film are observed in the presence of the nucleating agent when the melt indices of the two blend components have a ratio of greater than 10/1. The resulting barrier films are suitable for the preparation of packaging for dry foods such as crackers and breakfast cereals.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: May 9, 2017
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Norman Dorien Joseph Aubee, Douglas Checknita, P Scott Chisholm, Patrick Lam, Sarah Marshall, Denny Paul Sauvageau, Tony Tikuisis, Tingting Yu Chuang
  • Osteogenic regenerative scaffold matrix composition
    Patent number: 9642942
    Abstract: The implantable scaffold matrix composition for osteogenic regeneration has a biodegradable polymer material selected from the group consisting of one or more of polylactic acid, polyglycolic acid, or polycaprolactone, or any combination thereof to provide a time release delivery of an osteogenic effect and further has a pharmaceutical composition selected from the group consisting of one or more of ibuprofen, non-steroidal anti-inflammatory drugs (NSAIDS), acetaminophen, or naproxen sodium or any combination thereof and wherein the implantable composition has a primary and a secondary time release. The primary time release being one of the polymer compositions; each time release extending occurring between 0 days and 19 days, both not being at 0 days.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: May 9, 2017
    Assignee: Nova Southeastern University
    Inventors: Mohamad Elazizi, Peter Murray, H. Thomas Temple
  • EXTRUSION PROCESS FOR POLYETHYLENE POLYMERS
    Publication number: 20170120499
    Abstract: A method for the improved extrusion of polyethylene polymers comprising passing polyethylene through a single stage, twin screw extruder comprising a solid polymer conveying zone, a polymer melting zone, a dispersive mixing zone, and a distributive mixing/pumping zone, in which the throughput and screw speed are optimized to reduce the number of gels present, ensure complete polymer melting within the polymer melting zone, and to minimize polymer degradation.
    Type: Application
    Filed: February 2, 2015
    Publication date: May 4, 2017
    Applicant: NOVA Chemicals (International) S.A.
    Inventor: Tieqi Li
  • Polyethylene compositions and closures made from them
    Patent number: 9637628
    Abstract: A dual reactor solution process gives high density polyethylene compositions containing a first ethylene copolymer and a second ethylene copolymer and which have good processability, stiffness, and environmental stress crack resistance. The polyethylene compositions are suitable for compression molding or injection molding applications and are particularly useful in the manufacture of caps and closures for bottles.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: May 2, 2017
    Assignee: NOVA Chemicals (International S.A.
    Inventor: XiaoChuan Wang
  • Analyte system and method for determining hemoglobin parameters in whole blood
    Patent number: 9638686
    Abstract: A method of measuring whole-blood hemoglobin parameters includes providing a LED light source, guiding light having the spectral range from the LED light source along an optical path, providing a cuvette module with a sample receiving chamber, providing a pair of first and second optical diffusers disposed in the optical path where the cuvette module is disposed between the pair of first and second optical diffusers, guiding light from the cuvette module into an optical spectrometer, and processing an electrical signal from the spectrometer into an output signal useable for displaying and reporting hemoglobin parameter values and/or total bilirubin parameter values of the sample of whole blood.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: May 2, 2017
    Assignee: Nova Biomedical Corporation
    Inventors: Michael S. Cafferty, Scott P. Cionek
  • Inherently safe ODH operation
    Patent number: 9630893
    Abstract: In the operation of an oxidative dehydrogenation (ODH) process, it is desirable to remove oxygen in the product stream for a number of reasons, including to reduce oxidation of the product. This may be achieved by having several pre-reactors upstream of the main reactor having a catalyst system containing labile oxygen. The feed passes through one or more reactors saturated with labile oxygen. When the labile oxygen is consumed through a valve system, the pre-reactor accepts product from the main reactor and complexes reactive oxygen in the product stream until the catalyst system is saturated with labile oxygen. Then the reactor becomes a pre-reactor and another pre-reactor becomes a scavenger.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: April 25, 2017
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Vasily Simanzhenkov, Xiaoliang Gao, Edward Christopher Foy, Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina
  • COMPLEX COMPRISING OXIDATIVE DEHYDROGENATION UNIT
    Publication number: 20170106346
    Abstract: Oxidative dehydrogenation of paraffins to olefins provides a lower energy route to produce olefins. Oxidative dehydrogenation processes may be integrated with a number of processes in a chemical plant such as polymerization processes, manufacture of glycols, and carboxylic acids and esters. Additionally, oxidative dehydrogenation processes can be integrated with the back end separation process of a conventional steam cracker to increase capacity at reduced cost.
    Type: Application
    Filed: December 1, 2016
    Publication date: April 20, 2017
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: Vasily Simanzhenkov, Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina, Xiaoliang Gao, Edward Christopher Foy, Claire Jeannine Ennis
  • RADIATION CROSSLINKED POLYETHYLENE HINGE
    Publication number: 20170107365
    Abstract: Polyethylene living hinges used in “snap top” lids for condiments and the like may be electron bean irradiated to partially crosslink the polyethylene to produce a hinge having an improvement in the number of opening and closing cycles until failure of not less than 30%. The irradiated lids may be used in place of polypropylene lids for condiment containers.
    Type: Application
    Filed: January 29, 2015
    Publication date: April 20, 2017
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: Jason Rycroft, Gilbert Arnould, Matthew Botros, William McGrory
  • PINNED FURNACE TUBES
    Publication number: 20170107429
    Abstract: In an embodiment of the invention, furnace tubes for cracking hydrocarbons having a longitudinal array of pins having i) a maximum height from 0.5-1.3 cm; ii) a contact surface with the tube, having an area from 0.1%-10% of the tube external surface area iii) a uniform cross section along the length of the pin. (i.e. they are not tapered); and iv) a length to diameter ratio from 1.5:1 to 0.5:1 have an improved heat transfer over bare fins and reduced stress relative to a fined tube.
    Type: Application
    Filed: December 1, 2016
    Publication date: April 20, 2017
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: Jeffrey Stephen Crowe, Mark Andrew Taylor
  • Upsampling and downsampling of motion maps and other auxiliary maps in a tiered signal quality hierarchy
    Patent number: 9628817
    Abstract: Certain configurations herein include changing the resolution of an auxiliary map (e.g., a motion map, a z-map, etc.) at a first level of quality to obtain an auxiliary map at a second level of quality. For example, changing the resolution can include receiving a respective auxiliary map of one or more vectors at one or more lower levels of quality and progressively refining, via novel operations, the auxiliary map to higher or lower levels of quality in a hierarchy.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: April 18, 2017
    Assignee: V-Nova International Limited
    Inventors: Luca Rossato, Guido Meardi
  • Strawberry plant named ‘Melissa’
    Patent number: PP28081
    Abstract: A new and distinct short-day strawberry plant is provided. Attractive early-ripening substantially uniform medium red primarily conical to slightly rhomboid fruit having a firm flesh is formed in good yield that is longer than broad in configuration. White inflorescence is formed on an early basis that tends to be disposed above the foliage. A calyx commonly is displayed that extends slightly beyond the corolla when open. A semi-dense semi-upright growth habit is displayed.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: June 6, 2017
    Assignee: NOVA SIRI GENETICS S. R. L.
    Inventor: Nicola Tufaro