Patents Assigned to E
  • Preparation of cyclododecene
    Patent number: 5177278
    Abstract: Partial hydrogenation of 1,5,9-cyclododecatriene to form cyclododecene using ruthenium catalyst and a solvent selected from the group consisting of esters and ethers having a boiling point higher than 245 degrees C.
    Type: Grant
    Filed: October 23, 1991
    Date of Patent: January 5, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Kathryn M. Sanchez
  • Apparatus for preventing the use of an electrical device
    Patent number: 5176527
    Abstract: A lockout apparatus for preventing the use of an electrical device is characterized by a body having at least a first channel sized to receive a projecting portion of the electrical apparatus. A bore intersects the first channel and has a locking pin threadably displaceable therein. The locking pin is engagable in securing contact with the projecting portion of the electrical device receiveable within the channel. The body further includes a second bore intersecting the first bore, the second bore being sized for receipt of a member that prevents access to the locking pin disposed in the first bore.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: January 5, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Gilles J. Herbert
  • Stimulative earring for the stimulation of acupuncture points
    Patent number: 5176009
    Abstract: An earring for the stimulation of acupuncture points or lines present in the human outer ear consists of a hooplike open ended jewelry piece having opposite end portions, one being adapted to be received in the outer ear cavity and the other abutting the rear wall of the outer ear, wherein the earring consists of electrically conductive cast bronze material with an iron end piece cast into one end portion of the open-ended bronze hoop so as to provide at the opposite end portions for opposite face areas of materials which, in accordance with the electrochemical voltage series, provide for a potential therebetween when in contact with an ear which potential causes a current a flow through the ear for stimulation of the adjacent acupuncture points or lines in the outer ear.
    Type: Grant
    Filed: January 29, 1992
    Date of Patent: January 5, 1993
    Assignee: Fritz E. W. Hieber
    Inventor: Dieter Lang
  • Investment casting method and pattern material comprising thermally-collapsible expanded microspheres
    Patent number: 5176188
    Abstract: A method and composition for forming investment casting patterns wherein thermally-collapsible microspheres are incorporated into the pattern composition. The patterns can be made either by conventional pattern forming techniques or by solid imaging techniques. After investing the microsphere containing pattern in the ceramic shell, the pattern and shell are heated, causing a collapse of the microspheres and thereby preventing cracking of the shell. The shell is then heated to burn-out the remaining pattern material and fire the shell, thereby creating a mold.
    Type: Grant
    Filed: February 14, 1991
    Date of Patent: January 5, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John A. Quinn, Roxy N. Fan, John A. Lawton
  • Net game pole support
    Patent number: 5176344
    Abstract: A net game comprising of a pair of poles that are tightened across using a rope or cable in support of a net for net games. Said pole members are tubular in shape and are joined with ground anchor members that are of similar shape so as to slip-fit one over the other. Ground anchor members are rigidly placed partially within the earth for attachment and support of pole members. This standard is self-supporting and is suitable for a variety of net game sports.
    Type: Grant
    Filed: March 4, 1991
    Date of Patent: January 5, 1993
    Assignee: Stephen E. Eberhard
    Inventor: Stephen Eberhard
  • Spinnerets for producing trilobal and tetralobal filaments exhibiting low glitter and high bulk
    Patent number: 5176926
    Abstract: The present invention relates to spinnerets for forming synthetic filaments having a trilobal or tetralobal cross-sectional shape with substantial convex curves, connected by cusps, along the contour of each lobe. The filaments are especially suitable for making carpets which exhibit low glitter, high bulk, and resistance to fibrillation. The spinnerets have a central circular orifice with three or four radial slots radiating from the orifice. Peripheral orifices are located on the longitudinal axis of each radial slot.
    Type: Grant
    Filed: January 17, 1992
    Date of Patent: January 5, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Wae-Hai Tung
  • Method for preparing a phosphonic acid ester
    Patent number: 5177239
    Abstract: A method is provided for preparing a phosphonic acid ester having the structure ##STR1## wherein R.sup.1 is farnesyl or a derivative or analog thereof, and R.sup.2 is lower alkyl, by treating a farnesyl halide R.sup.1 Hal(Hal.dbd.Cl,Br,I) with an alkoxide of the structure ##STR2## wherein M is an alkali metal and R.sup.2c is lower alkyl. The resulting phosphonic acid ester is an intermediate in preparing a squalene synthetase inhibitor which is used for inhibiting cholesterol biosynthesis.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: January 5, 1993
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Janak Singh, Richard H. Mueller
  • Process for the preparation of halogenated 2,2-bis(trifluoromethyl)-1,3-dioxolanes
    Patent number: 5177224
    Abstract: A process for the production of a halogenated 2,2-bis(trihaloalkyl)-1,3-dioxolane of the formula ##STR1## wherein R.sub.f is perhaloalkyl comprising a 2,2-bis(trihaloalkyl)-1,3-dioxolane in the presence of at least one of La, Ni, Sn, Zn, Fe, Co or Cu is disclosed.A process for the production of a halogenated 2,2-bis(trihaloalkyl)-1,3-dioxolane of the formula ##STR2## wherein X is Cl and each Y is independently Cl or F and wherein at least one Y is F, comprising fluorinating a halogenated 2,2-bis(trifluoromethyl)-4,4,5,5-tetrachloro-1,3-dioxolane in the presence of a catalyst which is preferably Cr.sub.2 O.sub.3 is disclosed.A process for the production of a 2,2-bis(trihaloalkyl)-1,3-dioxole of the formula ##STR3## comprising dehalogenating substantially only a corresponding trans-2,2-bis(perhaloalkyl)-4,5-difluoro-4,5-dichloro-1,3-dioxolane is disclosed.
    Type: Grant
    Filed: September 6, 1991
    Date of Patent: January 5, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Leo E. Manzer, Paul R. Resnick
  • Chiral phospholane transistor metal catalysts
    Patent number: 5177230
    Abstract: Chiral 2,5-disubstituted phospholanes useful as transition metal ligands in asymmetric catalysis and processes for their preparation are disclosed.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: January 5, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mark J. Burk
  • Perfluoroalkylated diaminomesitylene and polyimides therefrom
    Patent number: 5177179
    Abstract: Perfluoroalkylated diaminoesitylene and polymers, preferably polyimides, made therefrom. The necessarily obtainable meta-substitution position of the perfluoroalkyl group with respect to both amino-groups provides an improved diamine and compositions of matter resulting therefrom.
    Type: Grant
    Filed: April 4, 1991
    Date of Patent: January 5, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Brian C. Auman, David P. Higley, Bruce B. Johnson
  • Soluble pseudo rod-like polyimides having low coefficient of thermal expansion
    Patent number: 5177176
    Abstract: Polyimide compositions, films, and electronic devices using polyimides, based on 9-aryl-9(perfluoroalkyl)-xanthene-2,3,6,7-dianhydride and one or more diamines from a selected group, which offers to the polyimides a combination of desirable properties including solubility, pseudo rod-like structure, low linear coefficient of thermal expansion, high glass transition temperature, low dielectric constant, and high modulus.
    Type: Grant
    Filed: October 29, 1991
    Date of Patent: January 5, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Brian C. Auman
  • Process for the manufacture of halogen-substituted propanes containing hydrogen and at least five fluorine substituents
    Patent number: 5177273
    Abstract: A vapor phase process is disclosed for producing HCFC-225s, HCFC-235s, HCFC-226s, HFC-236s, and HFC-227s by reacting certain three-carbon reactants containing at least one less fluorine than, and at least as many hydrogen substituents as the desired product (e.g. propane propylene, allene or methylacetylene) with Cl.sub.2 and HF in the presence of a catalyst consisting essentially of chromium oxide or of chromium oxide which is combined with a refractory oxide, fluorinated and/or modified with manganese, iron, cobalt, nickel, copper and/or zinc. The temperature and contact time for the reaction are chosen to provide a product having the desired fluorine and hydrogen content.
    Type: Grant
    Filed: February 1, 1991
    Date of Patent: January 5, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Douglas W. Bruhnke, Jan J. Lerou, V. N. Mallikarjuna Rao, William C. Seidel, Frank J. Weigert
  • Enzymatic resolution process
    Patent number: 5177006
    Abstract: A novel enzymatic resolution process for preparing resolved compounds of the formula ##STR1## with improved yields and high optical purity is disclosed. Compounds of formula I' are useful, for example, as intermediates for the preparation of physiologically active compounds, e.g. captopril, zofenopril and endopeptidase inhibitor.
    Type: Grant
    Filed: July 2, 1991
    Date of Patent: January 5, 1993
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Jeffrey M. Howell, Ramesh N. Patel, Laszlo J. Szarka
  • 1,1,2,2,3,3-hexafluorocyclopentane and use thereof in compositions and processes for cleaning
    Patent number: 5176757
    Abstract: The compound 1,1,2,2,3,3-hexafluorocyclopentane and mixtures thereof with alcohols, ethers, esters, ketones, nitromethane, and halogenated hydrocarbons are disclosed; as is a process for cleaning a solid surface which comprises treating the surface with said compound or said mixtures. Binary mixtures of 1,1,2,2,3,3-hexafluorocyclopentane either with about 27 to 35 weight percent methanol, or with about 21 to 29 weight percent ethanol are disclosed as azeotrope or azeotrope-like compositions and are particularly suited for use where solvent recovery and reuse is practiced.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: January 5, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Douglas R. Anton
  • Optical fiber feedthrough
    Patent number: 5177806
    Abstract: An optical fiber feedthrough comprising a glass seal for sealing the optical fiber within a metal sleeve. The fiber is held in a fixed position with respect to the sleeve while a glass solder, preferably an annular preform, is heated to its glass transition temperature and then cooled to form a glass to metal seal.
    Type: Grant
    Filed: December 24, 1991
    Date of Patent: January 5, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Kathleen S. Abbott, Michael J. Hodgson, Brian M. Macdonald, David R. Smith
  • Pipeline secondary containment system and method
    Patent number: 5176025
    Abstract: A pipeline system with a localized environment for preventing, detecting, and containing leakage from a subterranean pipeline transporting hydrocarbon liquids and gases is disclosed. A steel pipe is enclosed in a sleeve of high density polyethylene and overlaid with a layer of geotextile material. Positioned in the interstitial space between the pipe and sleeve is a layer of geotextile material impregnated with hydrated lime which dissolves in the presence of water to create a highly alkaline solution to protect the pipe. Also positioned adjacent the inner layer are leak sensors/monitors for detection of leaks of hydrocarbon fluids and aqueous solutions.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: January 5, 1993
    Assignee: E. O. Butts Consultants Ltd.
    Inventor: Nicholas E. Butts
  • Monoclonal antibody recognizing anthracycline glycoside specific epitope and hybridoma secerning the antibody
    Patent number: 5177016
    Abstract: A monoclonal antibody against Doxorubicin and other anthracycline derivatives, being the monoclonal antibody able to selectively recognize epitopes located in correspondence or in proximity of the aromatic D ring of the anthracycline molecule, is described.
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: January 5, 1993
    Assignee: Istituto Nazionale per lo Studio e la Cura dei Tumori
    Inventors: Andrea Balsari, Maria I. Colnaghi, Mario Ghione
  • Microwave energy susceptible conformable laminate packaging materials
    Patent number: 5177332
    Abstract: A laminated wrap for packaging articles of food requiring browning and crispening and a degree of shielding during microwave cooking is disclosed. The wrap comprises a layer of flexible, heat resistant, microwave transparent plastic film, a layer of flexible, heat resistant, heat stable, microwave transparent film, and a layer of substantially continuous microwave susceptor material located on an interior surface of a film of the laminate.
    Type: Grant
    Filed: October 29, 1990
    Date of Patent: January 5, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Dan S. C. Fong
  • Acyl amidine and acyl, guanidine substituted biphenyl derivatives
    Patent number: 5177097
    Abstract: Novel compounds are disclosed having the formula ##STR1## and wherein R.sub.1, R.sub.2 and R.sub.3 are as defined herein. These compounds inhibit the action of angiotensin II and are useful, therefore, for example, as antihypertensive agents.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: January 5, 1993
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Michael A. Poss
  • Process for manufacture of 1,1,1,2-tetrafluoroethane
    Patent number: H1129
    Abstract: An improved process is disclosed for the manufacture of 1,1,1,2-tetrafluoroethane by the vapor-phase reaction of 2-chloro-1,1,1-trifluoroethane with hydrogen fluoride in the presence of an inorganic chromium (III) catalyst which includes co-feeding molecular chlorine to extend catalyst activity.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: January 5, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William H. Gumprecht