Patents Assigned to I
  • Process and apparatus for electrophoretic determination of primary structure of nucleic acids
    Patent number: 4959134
    Abstract: An apparatus and process is provided for an electrophoretic determination the primary structure of nucleic acids. The apparatus comprises a cuvette shaped as a sleeve having a gel shaped as a hollow cylinder positioned on one of the side surfaces of the sleeve and having samples of the nucleic acid in recesses on its end face located in a circle. The sleeve is provided with a rotation drive and its side wall and the bottom together with the side wall and the bottom of the second sleeve mounted coaxially with the first sleeve form chambers for placing electrode solutions therein. Between the electrode solutions in the region between the side walls of the sleeves there is located a non-polar liquid, its density is higher than that of the electrode solution located above it and lower than the density of the electrode solution located thereunder.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: September 25, 1990
    Assignee: Institut Molekulyarnoy Biologii I Biokhimii Akademii Nauk KazSSR
    Inventors: Valery N. Gross, Evgeny V. Kozhanov, Murat A. Aitkhozhin, deceased, David R. Beritashvili, Evgeny N. Tverdokhlebov, Georgy P. Georgiev
  • Herbicidal O-carbomethoxysulfonylurea
    Patent number: 4959095
    Abstract: The compound methyl 2-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]amino]sulfonyl ]benzoate has high herbicidal activity and is particularly useful for weed control in plantation crops.
    Type: Grant
    Filed: October 19, 1988
    Date of Patent: September 25, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Siew H. Chang
  • Polyhydroxybenzyloxypropanolamines
    Patent number: 4959390
    Abstract: Compounds of the present invention, are represented by the general formula ##STR1## wherein R.sub.1 group which may be alkyl of from 1 to about 6 carbon atoms, alkenyl of from 2 to about 6 carbon atoms, alkynyl of from 2 to about 10 carbon atoms, alkoxy wherein the alkyl group contains from 1 to about 6 carbon atoms, halogen, acetamido, amino, nitro, alkylamino of from 1 to about 6 carbon atoms, hydroxy, hydroxyalkyl of from 1 to about 6 carbon atoms, cyano or arylalkoxy wherein the alkyl group contains from 1 to about 6 carbon atoms R.sub.2, R.sub.3 and R.sub.4 are hydrogen or hydroxyl groups or the combination of either hydrogen or hydroxyl groups; W represents alkylene of from 1 to about 10 carbon atoms; and B represents --NHCOR.sub.5, --NHCONR.sub.5 R.sub.6, or --NHCOOR.sub.5 wherein R.sub.5 and R.sub.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: September 25, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ghanshyam Patil, William L. Matier, Khuong H. X. Mai
  • Crystallizable glass and thick film compositions thereof
    Patent number: 4959330
    Abstract: A dielectric glass composition consisting essentially on a molar basis of 15-27% ZNO, 8-16% BaO, 40-60% SiO.sub.2, 3-14% Al.sub.2 O.sub.3, 0-5% PbO and 0.5-5% of a metal oxide selected from ZrO.sub.2, up to 2.5% P.sub.2 O.sub.5 and mixtures thereof, the composition being crystallizable and non-reducing when fired at 850.degree.-900.degree. C.
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: September 25, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Paul C. Donohue, Kenneth W. Hang, Michael J. Haun
  • Organotitanium compositions useful for cross-linking
    Patent number: 4958038
    Abstract: A process which comprises (A) combining (i) glycerol, erythritol, arabitol, xylitol, sorbitol, dulcitol, mannitol, inositol, a monosaccharide, or a disaccharide, (ii) water and (iii) lactic acid, glycolic acid, malic acid, citric acid, tartaric acid, saccharic acid, gluconic acid, glyceric acid or mandelic acid to provide an aqueous solution of the polyol and the .alpha.-hydroxy carboxylic acid, and (B) then at an alkaline pH of 10 or less reacting the solution with a tetravalent titanium compound of an inorganic acid at an .alpha.-hydroxy carboxylic acid:titanium mol ratio between about 0.5:1 and about 4:1 and a polyol:titanium mol ratio between about 0.25:1 and about 2:1.
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: September 18, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Kenneth C. Smeltz
  • Uncatalyzed process for preparing "living" polymers
    Patent number: 4957973
    Abstract: "Living" polymers and their preparation in the absence of a co-catalyst at a pressure greater than about 50 MPa, from polar acrylic or maleimide monomers and organosilicon, -tin or -germanium initiators.
    Type: Grant
    Filed: September 22, 1987
    Date of Patent: September 18, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Dotsevi Y. Sogah
  • Apparatus and process for forming a wad of yarn
    Patent number: 4956901
    Abstract: A layered yarn package is formed of continuous filament yarn wads wherein the yarn alternates between compacted an extended lengths by axially compacting the yarn into a length, segmenting the length into alternating extended and compacted lengths then arranging the compacted lengths in a common axial direction one next to the other to form a layer. The layer may be compressed. One or more layers may form the package.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: September 18, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Joseph E. Koskol, Robert J. Santucci, Louis G. Rosanio, Jr.
  • Flame-proof electric device
    Patent number: 4958256
    Abstract: The flame-proof electric device includes a flame-proof partition separating a flame-proof lead-in chamber for the current conductors and power supply cable and a flame-proof component chamber. The flame-proof partition has mounted thereon an interlocking disconnecting switch, a flame-proof casing and at least one first, at least one second and at least one third lead-through current-conducting terminals. The first lead-through current-conducting terminal is connected with the power supply cable and the interlocking disconnecting switch which is also connected through a serial connection of the third and second lead-through current-conducting terminals with the components of the electric circuitry within the flame-proof component chamber.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: September 18, 1990
    Assignee: Vsesojuzny Nauchno-Issledovatelsky Proektno-Konstruktorsky i Tekhnologichesky, Institut Vzryvozaschischennogo i Rudnichnogo Elektrooborudovaniya
    Inventors: Alexandr I. Parkhomenko, Vitaly S. Dzjuban, Eduard P. Moskalev
  • Modified fluorocarbonylimino biurets
    Patent number: 4958039
    Abstract: Fluorocarbonylimino biurets derived from a tris(isocyanotoalkane)biuret, a fluoroaliphatic alcohol and a modifier group imports oil/water repellency, soil-release properties.
    Type: Grant
    Filed: August 24, 1984
    Date of Patent: September 18, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Engelbert Pechhold
  • Partially fluorinated polyesters from ketene acetals and fluorine monomers
    Patent number: 4957986
    Abstract: Partially fluorinated polyesters are disclosed having increased biodegradability and water repellency. The incorporation of an ester group into the backbone of the partially fluorinated compound permits modification of the compound's physical properties.
    Type: Grant
    Filed: December 15, 1989
    Date of Patent: September 18, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harry N. Cripps
  • Fungicidal oxazolidinones
    Patent number: 4957933
    Abstract: A method of controlling plant disease using thioxooxazolidinones, oxazolidinediones and related heterocycles, and agriculturally suitable compositions containing them.
    Type: Grant
    Filed: April 21, 1989
    Date of Patent: September 18, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Detlef Geffken, Rayner Dennis R.
  • Aramid fluff
    Patent number: 4957794
    Abstract: A composition is disclosed which comprises a fluff of aramid fibers wherein some of the aramid fibers are in the form of balls of the fluff. The composition is particularly useful for insulation, absorption, cushioning, and the like.
    Type: Grant
    Filed: January 2, 1990
    Date of Patent: September 18, 1990
    Assignee: E. I. DuPont de Nemours and Company
    Inventor: Thomas I. Bair
  • Process for producing kefir
    Patent number: 4957752
    Abstract: A process for producing kefir is provided which involves normalization of purified cow milk with respect to the content of dry solids by ultrafiltration of the milk at a temperature of 50.degree.-55.degree. C. till the content of dry solids is increased in the normalized milk by 0.5-4.0% by mass, further heat treatment at the temperature of 140.degree. C., introduction into the normalized milk of a leaven prepared using kefir fungi, leavening of the resulting mixture to a pH of 5.0-4.7, residence of the leavened mixture at a temperature of 18.degree.-20.degree. C. to a pH of 4.7-4.5, followed by packing.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: September 18, 1990
    Assignee: Vsesojuzny Nauchno-Issledovatelsky I Konstruktorsky Institut Molochnoi Promyshlennosti
    Inventors: Lilia N. Ivanova, Irina V. Rozhkova, Vera F. Semenikhina, Tatyana N. Knyazeva, Alexandr P. Chagarovsky
  • Conveyor belt for turn conveyors
    Patent number: 4957597
    Abstract: A fixed radius conveyor belt for turn conveyors has a radially positioned plurality of rods which are wrapped with helically wound filaments bridging spaces between the rods to prevent conveyed objects from falling through the spaces between the rods. The filaments are maintained in the radial space between links which are attached to the rods at their ends close to an inside edge, and retainers attached at the ends of the rods close to an outside edge of the belt. The links engage one sprocket wheel of a conveyor, and the second wheel of the conveyor engages rods in an area adjacent to the retainers. Such an arrangement results in a belt which is structurally strong and can withstand conveyor jams and other irregularities in the conveying action without disintegration of the belt structure. The relatively simple construction of the belt permits easy assembly and allows production at a relatively low cost.
    Type: Grant
    Filed: September 20, 1989
    Date of Patent: September 18, 1990
    Assignee: I. J. White Co.
    Inventor: Guy L. Irwin
  • Alkaline extraction, peroxide bleaching of nonwoody lignocellulosic substrates
    Patent number: 4957599
    Abstract: An improved process for delignifying and bleaching nonwoody, lignocellulosic material into products digestible by ruminants and ingestible by humans. The process comprises treating the substrate in an alkaline solution for a period of time, separating the wetted substrate from the slurry and then treating the wetted substrate with an alkaline peroxide solution at an initial pH of 8.5 to 11.0 for a period of time, and separating, washing and drying the product.
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: September 18, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Yu-Chia T. Chou, David F. Garrison, William I. Lewis
  • Pin alignment method
    Patent number: 4956913
    Abstract: An apparatus and method for assembling electrical connector components, including headers, connectors, and terminals, to circuit bearing substrates functions to align the terminal pins of a connector or header into a preferred position and install an annular solder preform onto each terminal pin. The pin alignment apparatus includes movable jaw plates the define a variable size aperture for encompassing each of a plurality of terminal pins, including terminal pins that are bent or skewed relative to an intended position. A carrier plate overlies the jaw plates and includes a plurality of cavities for receiving solder preforms to be installed over each of the terminal pins. The jaw plates are positioned over the terminal pins and moved to a closed position to align all the terminal pins, including any bent or skewed terminal pins, to an intended alignment.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: September 18, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Michael P. Eck
  • Fluoroelastomer composition with low tendency to foul molds
    Patent number: 4957975
    Abstract: A composition that exhibits low tendency to foul mold cavities comprising a fluoroelastomer of vinylidene fluoride units and units of at least one other fluorine-containing monomer copolymerizable with vinylidene fluoride; a bisphenol or a polyhydroxy phenol crosslinking agent of the formula ##STR1## where R is H, alkyl or aryl and R' is alkyl or aryl; a divalent metal oxide or hydroxide; and 0.2-4 parts by weight per 100 parts by weight fluoroelastomer of a crosslinking accelerator which is a quaternary ammonium salt of the formula R".sub.4 N.sup.+ X.sup.- wherein each R" is independently an alkyl group of 2-10 carbon atoms or an aralkyl group of 7-10 carbon atoms and X.sup.- is selected from the group consisting of fluoride, dihydrogen phosphate, periodate, acetate, hydrogen sulfate, methane sulfonate, toluene sulfonate, or an anion of a bisphenol or a polyhydroxy phenol.
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: September 18, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Dana P. Carlson, Walter W. Schmiegel
  • Hollow fibers having curved members projecting therefor
    Patent number: 4956237
    Abstract: A hollow fiber with a plurality of members projecting from its outer surface in an arc turned back on itself is formed from a spinneret having a segmented orifice wherein each segment comprises a first portion in the form of an arc curved about the center of the orifice, a second portion extending from the first and connected to a third portion which is in the form of a reverse curve with respect to the first.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: September 11, 1990
    Assignee: E. I. duPont de Nemours and Company
    Inventor: Harry V. Samuelson
  • Unoriented monofilament with multilobed core
    Patent number: 4956236
    Abstract: Coextruded, substantially unoriented monofilament having a multi-lobed core and a round sheath.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: September 11, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Teh-Chaun Wang
  • Aqueous processible photosensitive compositions containing core shell microgels
    Patent number: 4956252
    Abstract: The present invention concerns an aqueous processible solid photosensitive composition for making relief plates comprising(a) an addition photopolymerizable ethylenically unsaturated monomer;(b) a photoinitiator or photoinitiating system activated by actinic light; and(c) a core shell microgel binder; wherein the core shell microgel binder has two domains, a core having less than 10% crosslinking and an aqueous processible non-crosslinked outer shell consisting of an acid-modified copolymer, and further wherein the monomer partitions in the shell of the microgel. The invention also concerns a photosensitive element containing this composition.
    Type: Grant
    Filed: August 30, 1988
    Date of Patent: September 11, 1990
    Assignee: E. I. duPont de Nemours and Company
    Inventors: Michael Fryd, Ernst Leberzammer, S. Andries R. Sebastian