Patents Assigned to E
  • Patent number: 4311696
    Abstract: The substituted butanoic acid esters 2-(4-azidophenyl)-3-methylbutanoic acid, .alpha.-cyano-3-phenoxybenzyl ester and 2-(4-azidophenyl)-3-methylbutanoic acid, 3-phenoxybenzyl ester are useful as insecticides.
    Type: Grant
    Filed: February 12, 1981
    Date of Patent: January 19, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John B. Adams, Jr.
  • Patent number: 4310591
    Abstract: A security paper is provided in which identifying material is contained as an intercalary layer within the thickness of a bonded, nonwoven, polyethylene-film-fibril sheet having an opacity of at least 70% and a delamination resistance of at least 60 grams per centimeter. A process for making such paper includes forming an assembly of two unbonded, lightly consolidated, nonwoven, polyethylene film-fibril sheets containing identifying material between them, compressing the assembly in an unheated nip at 17 to 85 kilograms per centimeter of assembly width and then self-bonding the compressed assembly while under restraint by contact with a heated drum. Such security paper is useful for bank notes, stock certificates, paper currency and the like.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: January 12, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Chi C. Lee, Richard E. Ludwig
  • Patent number: 4310461
    Abstract: Imido, amido and amino derivatives of mercaptoacyl prolines and pipecolic acids are useful for the treatment of hypertension.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: January 12, 1982
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: John Krapcho, Peter C. Wade
  • Patent number: 4310690
    Abstract: This invention relates to a novel process for preparing the calcium salt of .alpha.-hydroxy-.gamma.-methylmercaptobutyric acid (MHBA).
    Type: Grant
    Filed: October 8, 1980
    Date of Patent: January 12, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Earl W. Cummins
  • Patent number: 4310426
    Abstract: Yellowing resistant, durable antistatic soil release agent: ##STR1## wherein X is an aminoplast resin moiety having amino nitrogen atoms and 4 to 6 methylene groups, each of which methylene groups is attached to an amino nitrogen atom;Y.sub.1 is O(C.sub.2 H.sub.4 O).sub.5-20 R.sub.1 ;R.sub.1 is C.sub.1-5 alkyl;Y.sub.2 is O(C.sub.2 H.sub.4 O).sub.5-88 R.sub.2 ;R.sub.2 is C.sub.6-20 alkyl;Y.sub.3 is ##STR2## R.sub.3 is C.sub.4-20 alkyl, C.sub.4-20 alkenyl or benzyl; R.sub.4 is C.sub.1-4 alkyl;A.sup..crclbar. is an organic or inorganic anion; each of a and b can be 0 to 2, provided that the sum of a and b is 1 to 2;c is 1 to 2;the sum of a, b and c is 2 to 4;each of m and n is at least 1 and the sum of m and n is 12 to 100;said agent having HLB of 14.5 to 18.0, Brookfield viscosity (20 weight % aqueous solution viscosity at 20.degree. C.) of 0.250 to 16.000 pascal seconds, electrical resistivity (Keithley Log R) on polyester fabric (20.+-.2% RH, 23.degree..+-.1.degree. C.) less than 13.00 initially and 14.
    Type: Grant
    Filed: September 5, 1980
    Date of Patent: January 12, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Kenneth C. Smeltz
  • Patent number: 4310295
    Abstract: A device for uniform pinning of molten web material onto a quench roll by means of at least two vacuum zones interacting through a baffle, one vacuum zone extending past the line of contact of the web on the quench roll to encompass a portion of the web edge laid onto the casting drum.
    Type: Grant
    Filed: January 28, 1981
    Date of Patent: January 12, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: David E. Heyer
  • Patent number: 4310346
    Abstract: This invention relates to N(Substituted Phenylsulfonyl) N'(Substituted Pyrimidinyl) urea compounds having the formulae I and IA ##STR1## to agricultural compositions containing them and to their methods of use as general as well as selective pre- and post-emergence herbicides and as plant growth regulants.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: January 12, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: George Levitt, Richard F. Sauers
  • Patent number: 4310596
    Abstract: Postformable solar selective coatings are disclosed for use on substrates such as aluminum. The coatings use a finely divided black inherently selective spinel pigment such as Co.sub.3 O.sub.4, CuCr.sub.2 O.sub.4 or Cu.sub.x Co.sub.3-x O.sub.4 where x is 0.03 to 0.3 and preferably 0.10 to 0.30. The binders are soluble copolymers of vinylidene fluoride or blends thereof or vinylidene fluoride with a copolymer of methyl methacrylate.
    Type: Grant
    Filed: March 20, 1980
    Date of Patent: January 12, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Oral R. Van Buskirk
  • Patent number: 4310830
    Abstract: To convert a sample of an amplitude-modulated voltage wave into binary pulses, the sample is simultaneously compared in two coders with two sets of threshold voltages of positive and negative polarity, respectively. Either one of the two coders yields in unbroken succession of pulses, having the same polarity as the sample, whereas the other coder produces a combination of both positive and negative pulses. Following inversion of the pulses issuing from one coder, and upon suppression of the pulses of one polarity (e.g. negative), the two pulse trains are combined into a series of bit groups each representing the absolute amplitude value of a respective sample. The final step in the processing of any sample is the generation of a sign bit in accordance with the polarity of the unipolar pulse train emitted by one of the coders; this sign bit is then transposed to the beginning of the corresponding group of amplitude bits.
    Type: Grant
    Filed: September 11, 1979
    Date of Patent: January 12, 1982
    Assignee: CSELT - Centro Studi e Laboratori Telecomunicazioni S.p.A.
    Inventors: Giancarlo Babini, Bruno Fabbri, Paolo Lucchini
  • Patent number: 4310470
    Abstract: An improved process for preparing a dialkyl propanediimidate dihydrohalide by reacting malononitrile, an alkyl alcohol, and hydrogen halide, wherein the improvement comprises conducting the reaction in an alkyl acetate as a solvent.
    Type: Grant
    Filed: April 24, 1980
    Date of Patent: January 12, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Charles D. Adams
  • Patent number: 4310628
    Abstract: Fructose productivity and isomerase activity in immobilized beds or column operations employing isomerases obtained from Bacillus organisms are significantly improved by isomerizing a high solids feed syrup at pH 7.0-7.5 and 55.degree. C. to 60.degree. C. Without adding cobalt to the feed streams, continuous column operation in excess of 4,000 hours and yielding greater than 3,500 pounds of a 42% fructose syrup for each pound of isomerase can be achieved.
    Type: Grant
    Filed: March 14, 1980
    Date of Patent: January 12, 1982
    Assignee: A. E. Staley Manufacturing Company
    Inventor: Roger S. Leiser
  • Patent number: 4308710
    Abstract: A process and apparatus for packaging products such as dusty powders are provided. The apparatus is an enclosed housing (e.g., a glove box) with an open lower end and having two glove openings with gloves attached, an opening for attaching a waste disposal bag thereto, and an optional opening for attaching a bag for product samples. The glove box has means for securing a bag in a filling position around the lower end and has the discharge end of a product fill pipe extending into the open lower end. There are vacuum means for applying a vacuum to the inside of the glove box and for applying a vacuum from the inside through apertures circumferentially arranged around the lower edge of the glove box. The described process involves attaching a bag, e.g., polyethylene bag, around the open lower end of an enclosed filling chamber (e.g.
    Type: Grant
    Filed: June 6, 1979
    Date of Patent: January 5, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harry W. Sandberg
  • Patent number: 4309358
    Abstract: N,N-diaryl stannanamines such as 1,1,1-tributyl-N-[2-chloro-5-(trifluoromethyl)phenyl]-N-[2,4-dinitro-6-(tr ifluoromethyl)phenyl] stannanamine are useful as miticides, insecticides, fungicides, ovicides and herbicides.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: January 5, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Caleb W. Holyoke, Jr.
  • Patent number: 4309425
    Abstract: Sulfonamides, such as N-[N-(2-chloro-5-(trifluoromethyl)phenyl]-N-[2,4-dinitro-6-(trifluoromethy l)phenyl]aminothio]-N,4-dimethylbenzenesulfonamide, are useful for control of arthropod pests of plants and animals and fungus disease of plants.
    Type: Grant
    Filed: April 11, 1980
    Date of Patent: January 5, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jiin-Duey Cheng
  • Patent number: 4309030
    Abstract: Disclosed is a presently preferred embodiment of an electronic competitive player response game apparatus having at least three and preferably four player stations. Each of the disclosed stations is provided with a lamp for designating which one of the stations is "active," and with a set of push button switches for permitting a player, when his station is active, to select the next active station by the timely actuation of the proper switch. The disclosed apparatus is also provided with a game start switch for causing the commencement of a game round, and with electronic circuitry for controlling the game's progress.
    Type: Grant
    Filed: February 14, 1980
    Date of Patent: January 5, 1982
    Assignee: Adolph E. Goldfarb
    Inventors: Adolph E. Goldfarb, Stephen C. Beck
  • Patent number: 4309331
    Abstract: Thermally coalescible acrylic resin dispersions comprising particles of single-phase, surfactant-free, random acrylic polymers or copolymers, containing at least 80% by weight of acrylic units, dispersed in a surfactant-free medium that comprises a compatible liquid plasticizer that is nonvolatile at room temperature and is not a monomer of any of the polymeric components. Incorporation of a photopolymerizable, ethylenically unsaturated compound provides photosensitive dispersions useful for making relief and planographic printing plates, photoresists, and the like.
    Type: Grant
    Filed: October 18, 1978
    Date of Patent: January 5, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Boynton Graham
  • Patent number: 4309475
    Abstract: Self-crimping bicomponent acrylic fibers comprising a nonhydrophilic component and a hydrophilic component in eccentric side-by-side relationship which in combination provide an equilibrium crimp reversibility (ECR) of at least about 20% have as the hydrophilic component a copolymer of acrylonitrile containing 0.7 to 1.2 mol percent 2-acrylamido-2-methylpropanesulfonic acid or salts thereof having a total ionizable group content of 180 to 270 milliequivalents per kilogram of copolymer.
    Type: Grant
    Filed: February 14, 1980
    Date of Patent: January 5, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Henry A. Hoffman, Jr.
  • Patent number: 4308777
    Abstract: A scoring blade operating in advance of the main blade of a tilting arbor saw is mounted to tilt with the main saw blade. Provision is made for adjusting the scoring blade laterally and vertically.
    Type: Grant
    Filed: May 21, 1980
    Date of Patent: January 5, 1982
    Assignee: Rockwell do Brasil Ind. e Com. Ltda.
    Inventor: Peter Lawson
  • Patent number: 4308338
    Abstract: A photopolymerizable element, preferably a lithographic plate, is provided. This element comprises a substrate bearing a photopolymerizable layer having a weight of about 1 to about 90 mg/dm.sup.2, said layer comprising:(1) at least one ethylenically unsaturated diester polyhydroxy polyether of the formula ##STR1## wherein R is H or CH.sub.3 ; R.sup.4 is H or an alkyl of 1-4 carbon atoms; n is 1-15; p is 0 or 1; and, when p is 1, R.sup.5 is H or CH.sub.3, and R.sup.6 is H, CH.sub.3 or C.sub.2 H.sub.5 ;(2) an organic, radiation-sensitive, free-radical generating system comprising 2,4,5-triarylimidazolyl dimer and p-aminophenyl ketone; and(3) a macromolecular, organic, polymeric binder.A polymeric image is formed by imagewise exposing the layer to actinic radiation and then developing the resulting image such as by removing unexposed portions of the layer with a solvent.
    Type: Grant
    Filed: December 4, 1980
    Date of Patent: December 29, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William J. Chambers, Christina N. Lazaridis
  • Patent number: D262638
    Type: Grant
    Filed: November 14, 1979
    Date of Patent: January 12, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Lawrence B. Eichelberger