Patents Assigned to E
  • Stripping method for removing resist from a printed circuit board
    Patent number: 5145717
    Abstract: A stripping method is provided to remove processed photoresist images from printed circuit substrates without damage to underlying high density circuitry. A solid particulate blast process is used to remove the resist images wherein the polymeric particles having a Mho hardness in the range from 2.0 to 4.0 are used as the blast media.
    Type: Grant
    Filed: June 20, 1990
    Date of Patent: September 8, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert F. Drury
  • Disproportionation of selected chlorofluoromethanes
    Patent number: 5146020
    Abstract: Trifluoromethane or monochlorodifluoromethane and carbon tetrachloride are converted to trichloromonofluoromethane, dichlorodifluoromethane and chloroform using a catalyst of activated aluminum and magnesium oxides.
    Type: Grant
    Filed: August 8, 1990
    Date of Patent: September 8, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Charles G. Rudershausen
  • Pyrimidinyl tetrahydrofurans
    Patent number: 5145960
    Abstract: Antiviral activity is exhibited by compounds having the formula ##STR1## and pharmaceutically acceptable salts thereof wherein R.sub.1 is a pyrimidine base or an analog thereof and R.sub.2 and R.sub.3 are independently hydrogen, --PO.sub.3 H.sub.2 or ##STR2## wherein X.sub.7 is hydrogen, alkyl, substituted alkyl or aryl.
    Type: Grant
    Filed: August 7, 1991
    Date of Patent: September 8, 1992
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Robert Zahler, Joseph A. Tino
  • Hydrogenolysis/dehydrohalogenation process
    Patent number: 5146018
    Abstract: A process for the hydrogenolysis and/or dehydrohalogenation of fluorohalocarbons and/or fluorohalohydrocarbons by reacting the fluorohalocarbons and/or fluorohalohydrocarbons with a source of hydrogen in the presence of a catalyst, the improvement comprising utilizing a rhenium-containing catalyst, which may, optionally, contain at least one Group VIII metal and may, optionally, be supported.
    Type: Grant
    Filed: June 26, 1991
    Date of Patent: September 8, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Carl S. Kellner, V. N. Mallikarjuna Rao, Frank J. Weigert
  • Process for the manufacture of 3-pentenoic acid
    Patent number: 5145995
    Abstract: Preparation of 3-pentenoic acid from butadiene, water and carbon monoxide in an organic acid solvent in the presence of a rhodium catalyst and a bromide or iodide promoter.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: September 8, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Patrick M. Burke
  • Cyanocarbon compounds as lubricants in refrigeration compositions
    Patent number: 5145594
    Abstract: A blend of refrigerant with at least one cyanocarbon, which has an SUS viscosity at 100.degree. F. of at least 50 and a pour point of less than about -10.degree. C., is disclosed for use in compression refrigeration.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: September 8, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Douglas R. Anton, Joe D. Druliner
  • Positive working resist compositions process of exposing, stripping developing
    Patent number: 5145764
    Abstract: This invention relates to positive working resist compositions having utility in dry film photoresists and to fully aqueous methods for developing and stripping them.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: September 8, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard D. Bauer, Gwendyline Y. Y. Chen, Walter R. Hertler, Robert C. Wheland
  • Shears unit
    Patent number: 5144829
    Abstract: Shears unit positioned immediately upstream of a bending assembly (13) comprising a bending disk (19) and support means (15) to change the reciprocal positions of a contrast roll (20) and a section or sections (11) in a bending-shaping machine, the shears unit including a stationary blade support (33) positioned astride and above a part of the bending disk (19), the blade support (33) bearing and positioning a laterally shearing stationary blade (34), which cooperates with a laterally displaceable blade holder (30).
    Type: Grant
    Filed: March 2, 1990
    Date of Patent: September 8, 1992
    Assignee: M. E. P. Macchine Elettroniche Piegatrici SpA
    Inventors: Giorgio D. Fabro, Marcello D. Fabro
  • Organic optical elements and nonlinear optical devices
    Patent number: 5145610
    Abstract: Optical elements comprising noncentrosymmetric crystalline organic compounds are provided, that are capable of second harmonic generation. The invention further provides for nonlinear optical devices and modulators incorporating the optical elements.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: September 8, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Dennis S. Donald, Gerald R. Meredith
  • Microwave resonant cavity applicator for heating articles of indefinite length
    Patent number: 5146058
    Abstract: A rectangular microwave resonant cavity applicator comprising two spaced-apart, cavity-containing sections is disclosed for heating a product web. Each section has a planar peripheral lip which faces the other and the sections are spaced apart by a distance "d". The lips have arrays of ferrite segments mounted on their surfaces which serve to limit radiation of microwave energy from the open space between the sections, through which the product web passes.
    Type: Grant
    Filed: December 27, 1990
    Date of Patent: September 8, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Dean R. Herfindahl, Hua-Feng Huang, Richard W. Lewis, Walter A. Wallace
  • Method of making double-sided magneto-optical disks having reduced birefringence
    Patent number: 5146438
    Abstract: The invention is directed to a two-sided magneto-optical recording disk having reduced birefringence comprising a pair of single-sided magneto-optical recording disks, the entire recording sides of which are adhered together by means of a continuous layer of polymeric adhesive. An external mechanical laminating pressure in a vacuum is applied to the non-information areas of the a magneto-optical disk.
    Type: Grant
    Filed: May 30, 1990
    Date of Patent: September 8, 1992
    Assignee: E. I. Du Pont de Nemours & Co.
    Inventor: Fred J. Harper
  • Method for preparing isoprenoid cyclopropane 1,1-dicarboxylates and derivatives thereof and novel intermediates
    Patent number: 5144080
    Abstract: A process is provided for preparing isoprenoid cyclopropane 1,1-dicarboxylates and derivatives thereof including the corresponding monocarboxylate, monocarboxylic acid and alcohol derivatives thereof, all of which are useful in preparing squalene synthetase inhibitors which inhibit cholesterol biosynthesis, and also useful in preparing pyrethrin insecticides.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: September 1, 1992
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Scott A. Biller, Cornelia Forster
  • Dihydropyrimidine macrocyclic lactones useful as calcium antagonists and agonists
    Patent number: 5143915
    Abstract: A compound of the formula ##STR1## (symbols defined in the specification), its 3,4-dihydropyrimidine tautomer form and pharmaceutically acceptable salts thereof have calcium entry blocking activity. A process of preparation, pharmaceutical composition and method of using the compound to reduce blood pressure are also provided.
    Type: Grant
    Filed: July 25, 1990
    Date of Patent: September 1, 1992
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: George C. Rovnyak, Spencer D. Kimball
  • Preparation of tertiary amine borane adducts
    Patent number: 5144032
    Abstract: An improved curing agent for use in coatings, laminates, moldings, castings and adhesives comprising the use of an amine-boron adduct component along with anhydride and epoxy component mixtures. Also provided is an improved process for the preparation of tertiary amine borane curing agents.
    Type: Grant
    Filed: April 19, 1991
    Date of Patent: September 1, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Anthony J. Arduengo
  • Process for activation or regeneration of nickel catalyst
    Patent number: 5143873
    Abstract: This invention concerns the use of M[BR.sub.3 H].sub.y reagents for activating or regenerating deactivated or degraded Ni catalyst used in Ni-catalyzed alkene hydrocyanation processes in the presence of an organic phosphorus compound, where M is an electropositive ion excluding nickel, such as, but not limited to, the Group 1A cations, the Group IIA cations, the lanthanide cations and the quaternary ammoniums and R is an organic radical of up to 18 carbon atoms, and where y is equal to the net charge of the cation. The invention also concerns a process for activation or regeneration of Ni-catalysts using MH and a catalytic amount of BR.sub.3.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: September 1, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Henry E. Bryndza, Albert L. Casalnuovo
  • [3S(Z)]-3-[[(2-amino-4- thiazolyl)[[2-(hydroxyamino)-2-oxoethoxy]imino]acetyl]amino]-2,2-dimethyl -4-oxo-1-azetidinyl sulfate
    Patent number: 5143913
    Abstract: The compound [3S(Z)]-3-[[(2-amino-4-thiazolyl)[[2-(hydroxyamino)-2-oxoethoxy]imino]acet yl]amino]-2,2-dimethyl-4-oxo-1-azetidinyl sulfate has gram-positive and gram-negative activity and good oral absorption.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: September 1, 1992
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Robert Zahler, Joseph E. Sundeen
  • Bag opening device for automatically opening plastic bags in supermarket check-out counters incorporating bag dispensing machines
    Patent number: 5142840
    Abstract: Bag opening device for supermarket check-out counters incorporating bag dispensing machines, comprising a pair of pliers mounted on a pair of guides capable of a reciprocating horizontal motion. The pliers grasp and pull apart the two opposite sides of a bag fed by feeding belts. Each pliers (1, 2) consists of a pair of jaws (9, 9' and 11, 11') meshing with each other by means of a pair of toothed wheels (13, 13' and 14, 14') and pushed towards each other by a compression spring (16, 17) placed between two of their ends. One of the ends of each pliers is provided with a roller (18, 19) which, by interacting with a suitable opening device, counteracts the force of the compression springs (16, 17) thereby opening the jaws (9, 9' and 11, 11') of each pliers (1, 2).
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: September 1, 1992
    Assignee: A.W.A.X. Progettazione e Ricerca S.r.l.
    Inventors: Angelo Cappi, Renato Rimondi
  • Digital sampling instrument
    Patent number: 5144676
    Abstract: A digital sampling instrument is disclosed. The instrument provides the capability of accessing and outputting stored digital data within a single clock cycle. The instrument also provides improved volume scaling for sound generation and further eliminates redundant loading of a particular sound into a sound memory.
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: September 1, 1992
    Assignee: E-mu Systems, Inc.
    Inventor: David P. Rossum
  • Combined thumb and finger grip for nail clippers
    Patent number: D329306
    Type: Grant
    Filed: August 25, 1989
    Date of Patent: September 8, 1992
    Assignee: The W. E. Bassett Company
    Inventor: Eric Rommerdale
  • Multilayer reverse osmosis membrane of polyamide-urea
    Patent number: RE34058
    Abstract: The present invention is directed to an improved reverse osmosis membrane that shows surprisingly improved solute rejection and permeation properties. The membrane includes a separating layer of a polyamideurea formed in situ by reaction of isocyanate-substituted acyl chloride and a diamine-treated microporous substrate.
    Type: Grant
    Filed: October 29, 1991
    Date of Patent: September 8, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Samuel D. Arthur