Patents Assigned to E
  • Ion exchange membranes
    Patent number: 4454247
    Abstract: Vinyl ether monomers derived from diesters of the formula: ##STR1## wherein R is CH.sub.3 or C.sub.2 H.sub.5 and n is 0 to 10; copolymers of the vinyl ether monomers with one or more selected perfluorinated monoolefins; articles of manufacture made from the copolymers; process for making the diesters; process for using copolymer membranes in a chlor-alkali cell.
    Type: Grant
    Filed: September 1, 1982
    Date of Patent: June 12, 1984
    Assignee: E. I. Du Pont de Nemours & Company
    Inventor: Paul R. Resnick
  • Substituted benzene sulfonyl isocyanates as intermediates to herbicidal sulfonamides
    Patent number: 4454335
    Abstract: Novel o-aminosulfonylphenyl acetic acid derivatives are useful as plant growth regulants and herbicides.
    Type: Grant
    Filed: June 14, 1982
    Date of Patent: June 12, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Organotin insecticidal sulfonamides
    Patent number: 4454135
    Abstract: Novel tetraorganotin benzenesulfonamide compounds are described which possess insecticidal and arachnicidal activity. In addition, novel trifluoroacetate organotin benzenesulfonamide intermediates useful in the synthesis of these tetraorganotin benzenesulfonamide compounds are described.
    Type: Grant
    Filed: January 4, 1983
    Date of Patent: June 12, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Gerald E. Lepone
  • Rack structure
    Patent number: 4453472
    Abstract: A rack structure is disclosed having a clip adapted for connecting a supported member, preferably forming part of a shelf, from an adjacent upright which is of a type having two opposite side walls and a wall extending transversely therebetween and joining the side walls at corners of the upright which contain openings. The clip extends along an inner side of the transverse wall and has opposite end portions projecting into the openings in the corners of the upright, with at least one end of the clip engaging a member supported thereby at a location laterally beyond the upright.
    Type: Grant
    Filed: February 22, 1982
    Date of Patent: June 12, 1984
    Assignee: M. E. Canfield Company
    Inventor: Leonard H. Ward
  • Herbicidal sulfonamides
    Patent number: 4453971
    Abstract: N-(heterocyclicaminocarbonyl)arylsulfonamides, such as 3-isocyanato-N-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)aminocarbonyl]benze nesulfonamide or methyl [3-[[(4-methoxy-6-methylpyrimidin-2-yl)aminocarbonyl]aminosulfonyl]phenyl] carbamate, are useful for the regulation of plant growth and as herbicides.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: June 12, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Magnetic developing unit with improved toner decorator for magnetic printing
    Patent number: 4453492
    Abstract: Disclosed is a magnetic developing unit having a decorator for applying magnetic toner to a latent magnetic image in a downwardly moving magnetic imaging member. Preferably the imaging member is in the surface of a cylinder and the decorator is at the 3 o'clock or 9 o'clock position. The decorator comprises a housing containing a lower toner supply and background cleaner roll, an intermediate toner transfer roll and an upper toner decorator roll. Each of the rolls comprises a rotating non-magnetic sleeve and a plurality of elongated internal magnets which alternate in polarity adjacent the rotating sleeve and their relative positions are adjustable.
    Type: Grant
    Filed: August 12, 1982
    Date of Patent: June 12, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Emery J. Gorondy
  • Preparation of para-nitrobenzotrichloride
    Patent number: 4454360
    Abstract: Para-nitrobenzotrichloride is prepared by chlorinating nitrotoluene using an activated carbon catalyst. The process can use various cocatalysts such as bromine, iodine, PCl.sub.3, S.sub.2 Cl.sub.2, bromide salts, chloranil, air bubbles and phthalimide. The reaction is carried out at from 20.degree. C., to 220.degree. C., with from 150.degree. to 200.degree. C. being the preferred range and a pressure of 1 to 5 Atm.
    Type: Grant
    Filed: December 1, 1982
    Date of Patent: June 12, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William B. McCormack
  • Connector for joining structural components
    Patent number: 4453488
    Abstract: A connector for joining structural components which may be subjected to bending, shear, tensional and/or torsional forces at the joint is comprised of a fixture member spanning the joint between the structural components for coupling the same along a longitudinal connector axis generally normal to the joint, socket members disposed within each of the components to be joined and through which the fixture member passes, the sockets defining a shear pocket configured to receive a resilient shear cushion. The fixture member is preferably a compressive fixture member and includes resilient compression cushion members disposed intermediate the length thereof outwardly proximate the shear pocket and inwardly proximate adjustable compression members for establishing a compressive force across the joint. A bending cushion may be disposed at the joint between the structural components.
    Type: Grant
    Filed: February 8, 1982
    Date of Patent: June 12, 1984
    Assignee: E. W. Watchorn & Associates, Inc.
    Inventor: Ernest W. Watchorn
  • Printed circuits prepared from metallized photoadhesive layers
    Patent number: 4454168
    Abstract: Process for preparation of printed circuits by applying particulate metal to tacky image areas, optionally removing excess particulate metal, and contacting the metallized image areas with an aqueous solution comprising cations of a plating metal to accomplish a metal-metal ion displacement reaction, the solution being substantially free of any chemical reducing agent for said cations. Preferably the conductive circuit is electroplated or soldered.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: June 12, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Herbert L. Fritz
  • Benzylsulfonyl isocyanates
    Patent number: 4454334
    Abstract: This invention relates to benzylsulfonylureas which are active pre- and post-emergence herbicides.
    Type: Grant
    Filed: September 21, 1983
    Date of Patent: June 12, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Richard F. Sauers
  • Temperature stabilized microwave cavities
    Patent number: 4454489
    Abstract: The description covers temperature stabilized resonant microwave cavities not requiring hermetic sealing and easy to be frequency adjusted. Essentially, they consist of a pure quartz body with a metallized surface, except for small superficial areas used for the couplings.
    Type: Grant
    Filed: July 2, 1981
    Date of Patent: June 12, 1984
    Assignee: TELETTRA - Telefonia Elettronica e Radio S.p.A.
    Inventors: Amedeo Donazzan, Enzo Pome
  • Process for making articles coated with a liquid composition of perfluorinated ion exchange resin
    Patent number: 4453991
    Abstract: A process is provided for making a liquid composition of a perfluorinated polymer having sulfonic acid or sulfonate groups in a liquid medium by contacting the polymer with a mixture of 25 to 100% by weight of water and 0 to 75% by weight of a second liquid component such as a lower alcohol, e.g., propanol or methanol, at a temperature of at least 180.degree. C. (at least 240.degree. C. when about 90% to 100% water is used), in a closed system. The liquid composition made by this process, or modified liquid products prepared therefrom, are used in coating various substrates, in casting films, and in repairing perfluorinated ion exchange films and membranes. The process is also useful in recovering perfluorinated polymer having sulfonic acid or sulfonate groups from scraps and used articles made of such polymer or containing such polymer as a component part thereof.
    Type: Grant
    Filed: September 16, 1982
    Date of Patent: June 12, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Walther G. Grot
  • N-Alkylindolylidene and N-alkylbenzo-thiazolylidene alkanones as sensitizers for photopolymer compositions
    Patent number: 4454218
    Abstract: Photopolymerizable compositions comprising (a) at least one ethylenically unsaturated compound, (b) at least one photoinitiator or photoinitiator system, (c) sensitizing amount of an N-alkylindolylidene or N-alkylbenzothiazolylidene alkanone as defined, and optionally (d) at least one organic polymeric binder. The compositions, in layer form are useful in printing plates, litho films, photoresists, solder mask and for making image proofs. The products show sensitization to visible light.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: June 12, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Thomas E. Dueber, William J. Link, deceased
  • Granular starch ethers having reduced pasting temperatures
    Patent number: 4452978
    Abstract: Hydroxypropylation of granular starch in a liquid medium comprising a lower alkanol under alkaline conditions in a confined zone at high temperature provides a novel improved hydroxypropyl substituted granular starch having a pasting temperature reduced from that of the granular starch before hydroxypropyl substitution by at least 6.5.degree. C. for each 1% by weight of hydroxypropyl substitution.
    Type: Grant
    Filed: November 19, 1982
    Date of Patent: June 5, 1984
    Assignee: A. E. Staley Manufacturing Company
    Inventor: James E. Eastman
  • Agricultural ureas and isoureas
    Patent number: 4452627
    Abstract: Condensed ring aromatic ureas and isoureas are useful as plant growth regulants and as pre- and/or post-emergence herbicides.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: June 5, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Phosphonyl hydroxyacyl amino acid derivatives as antihypertensives
    Patent number: 4452790
    Abstract: Phosphonyl hydroxyacyl amino acids of the formula ##STR1## wherein X is a substituted or unsubstituted imino or amino acid or ester. These compounds possess angiotensin converting enzyme activity and are thus useful as hypotensive agents.
    Type: Grant
    Filed: June 23, 1982
    Date of Patent: June 5, 1984
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Donald S. Karanewsky, Edward W. Petrillo, Jr.
  • Process for coating crystalline silica polymorphs
    Patent number: 4452909
    Abstract: Process for coating crystalline silica polymorphs such as silicalites and zeolites with amorphous silica using alkali metal silicates as the source of silica.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: June 5, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Duck J. Yang
  • Preparation of ozone resistant printing plates
    Patent number: 4452879
    Abstract: Process for improving ozone resistance of photosensitive flexographic relief printing plates prepared from at least 30% by weight of a block copolymer as defined, at least 1% by weight of at least one addition polymerizable ethylenically unsaturated compound, and a polymerization initiator wherein there is applied to the dry relief surface of said plates a solvent solution containing at least 1% by weight of a nickel or zinc dialkyldithiocarbamate compound where alkyl is from 1 to 4 carbon atoms. The treated plates which possess improved ozone resistance are useful for flexographic printing.
    Type: Grant
    Filed: September 13, 1983
    Date of Patent: June 5, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Michael G. Fickes, Peter F. Warfield
  • Herbicidal sulfonamides
    Patent number: 4452628
    Abstract: This invention pertains to benzenesulfonamides and their use as agricultural chemicals.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: June 5, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John B. Adams, Jr.
  • Respiratory protection apparatus
    Patent number: 4452240
    Abstract: A respiratory protection apparatus includes a nose engaging means for urging the outer walls of the nose toward the inner wall, which includes spaced-apart urging members, and a mouthpiece, said nose engaging means being rigidly secured to said mouthpiece. The apparatus further comprises a conduit arrangement for supplying air to said mouthpiece, said mouthpiece secured to a portion of the conduit arrangement, said conduit arrangement being sufficiently rigid so that said conduit arrangement can be used to direct said nose engaging means onto said nose and then direct the mouthpiece into the mouth of the worker. The apparatus further includes a valve for communicating with the conduit arrangement for allowing for the inhalation and exhalation of air.
    Type: Grant
    Filed: October 5, 1981
    Date of Patent: June 5, 1984
    Assignee: E. D. Bullard Company
    Inventor: Anthony L. Moretti