Patents Examined by John Kight, III
  • Photochemically linkable polymers
    Patent number: 5409964
    Abstract: Photochemically linkable polymers corresponding to formula (I)P-(A).sub.n (I)in whichP is a polymer component,A is a photochemically reactive unit andn is the number 1 or 2,and their use for immunological purposes.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: April 25, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ludger Heiliger, Eberhard Kuckert
  • Method of preparing aliphatic-aromatic polycarbonates
    Patent number: 5410014
    Abstract: A method of preparing aliphatic-aromatic polycarbonate resin is disclosed. Accordingly, the method entails reacting an oligocarbonate of diphenol having chlorocarbonic acid ester terminal groups, with an aliphatic diol, in a non-aqueous solvent. The amount of solvent is such that the oligocarbonate is about 10-40% relative to the total weight of solvent, oligocarbonate and diol.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: April 25, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wilfried Haese, Ralf Pakull, Gerhard Fennhoff, Jurgen Kirsch
  • Method and apparatus for fine processing
    Patent number: 5409802
    Abstract: A method for fine processing includes a first step in which a first reaction gas is introduced into a reaction chamber which contains a material to be processed, followed by irradiation with light to form an active layer on the surface of the material through photochemical reaction between the material and the first reaction gas, a second step in which the active layer is selectively irradiated with energy in an atmosphere of a second reaction gas to cause a chemical change only in the irradiated portion to form a latent image layer, a third step in which either the latent image layer or active layer is removed and a fourth step in which, using the portion left unremoved in the third step as a shield mask, the portion other than the masked portion is etched.
    Type: Grant
    Filed: December 9, 1993
    Date of Patent: April 25, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasue Sato, Toshiyuki Komatsu, Shinichi Kawate
  • Continuous thermal polycondensation process for preparing polypeptide polymers
    Patent number: 5410017
    Abstract: A continuous process for preparing polymers is provided: The continuous process produces polymers from monoethylenically unsaturated acids or anhydrides, and a nitrogen-containing compound, optionally in the presence of a fluidizing agent. The polymers are useful as detergent additives, pigment and mineral dispersants, additives for fertilizers, and corrosion and scale inhibitors in boilers and cooling towers.
    Type: Grant
    Filed: May 21, 1993
    Date of Patent: April 25, 1995
    Assignee: Rohm and Haas Company
    Inventors: Newman M. Bortnick, Robert E. Jerman, James M. Lipovsky, Yi H. Paik, Ethan S. Simon, Graham Swift
  • Polyamides having a low water absorptivity
    Patent number: 5410015
    Abstract: Thermoplastic polyamide molding materials contain, as essential components,A) from 39 to 99% by weight of a polyamide or a mixture of different polyamides andB) from 1 to 30% by weight of a phenol of the general formula IR.sub.3 E Iand E is a trivalent, aliphatic, C.sub.1 -C.sub.10 -hydrocarbon radical, triazinetriyl or a trivalent C.sub.6 - or C.sub.10 -aryl radical, andc) from 0 to 60% by weight, based on the amount of polyamide, of fibrous or particulate fillers or a mixture thereof.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: April 25, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: James Hurley, Walter Goetz, Gerd Blinne
  • Polyurethaneurea elastomer
    Patent number: 5410009
    Abstract: A polyurethaneurea elastomer obtained by reacting a polyisocyanate component obtained by reacting 1,5-naphthalene diisocyanate with a polyol, with an amine component consisting essentially of an amine compound of the formula (1): ##STR1## wherein R is a bivalent polyalkylene polyether or polyalkylene polyester having an average molecular weight of at least 200, which may contain unsaturated bonds in the polyalkylene.
    Type: Grant
    Filed: June 28, 1993
    Date of Patent: April 25, 1995
    Assignee: Ihara Chemical Industry Co., Ltd.
    Inventors: Kaneyoshi Kato, Yoshijiro Oyaizu
  • Process for the production of aliphatic-aromatic polycarbonates
    Patent number: 5408027
    Abstract: A process for producing an aliphatic-aromatic polycarbonate is disclosed. The process comprise (A) reacting in an anhydrous neutral solvent (i) an oligocarbonate of diphenol with (ii) an aliphatic dicarboxylic acid, and (B) eliminating the hydrogen chloride and carbon dioxide by-products. The oligocarbonate of diphenol is characterized in that it is terminated by chlorocarbonic acid ester groups. The resins thus prepared are readily molded conventionally.
    Type: Grant
    Filed: February 24, 1994
    Date of Patent: April 18, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wilfried Haese, Ralf Pakull, Gerhard Fennhoff, Jurgen Kirsch
  • Polyether polyols, water-curable polyurethane prepolymers based thereon, and compositions containing the prepolymers
    Patent number: 5407968
    Abstract: The invention relates to a polyether polyol, a water-curable polyurethane prepolymer prepared by using the polyether polyol, and a composition containing the prepolymer. The above polyether polyol is obtainable by subjecting an active hydrogen compound to addition polymerization reaction with ethylene oxide and an alkylene oxide of 3 to 4 carbon atoms in a specified ratio. The above water-curable polyurethane prepolymer is obtainable by reacting the polyether polyol with a polyisocyanate compound. The above composition comprises a mixture of the water-curable polyurethane prepolymer and the polyisocyanate. The above water-curable polyurethane prepolymer and composition provide a foam of fine and uniform cell structure with improved strength on curing with water.
    Type: Grant
    Filed: January 4, 1993
    Date of Patent: April 18, 1995
    Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventor: Takashi Sano
  • Polymers having enhanced durable hydrophilicity and durable rewetting properties and process of producing the same
    Patent number: 5408012
    Abstract: This invention relates to polymers having enhanced durable hydrophilicity and rewetting properties. The polymer has bonded thereto a hydrophilic copolymer. The copolymer comprises the reaction product of a primary hydroxylate having rewetting properties and a silane. The aliphatic polyamide or polyester polymer has an affinity for the hydrophilic copolymer and has substantially no polymerization with the hydrophilic copolymer. The present invention also provides a process of treating polymers to impart hydrophilicity and rewetting properties.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: April 18, 1995
    Assignee: Comfort Technologies, Inc.
    Inventor: Lloyd F. Barringer, Jr.
  • Mask alignment mark system
    Patent number: 5407763
    Abstract: An alignment mark system and method of using the same wherein each mask of a sequence of masks includes a mask sequence indicium, a first alignment feature and a second alignment feature spaced from the first alignment feature. Each of the mask sequence indicium, the first alignment feature and the second alignment feature produce a corresponding structure as a result of the photolithographic process. The structure resulting from the second alignment feature is aligned with the first alignment feature of the immediately succeeding mask for proper alignment of the mask sequence.
    Type: Grant
    Filed: May 28, 1992
    Date of Patent: April 18, 1995
    Assignee: Ceridian Corporation
    Inventor: Deepak K. Pai
  • Polyester resin
    Patent number: 5407752
    Abstract: A polyester resin comprising units of a dicarboxylic acid component composed mainly of an aromatic dicarboxylic acid or its ester forming derivative and a diol component composed mainly of ethylene glycol and an ethylene oxide adduct of a bisphenol compound or its derivative.The resin may advantageously be used as a molding material for various moldings such as extrusion molding, blow molding, vacuum molding and injection molding.
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: April 18, 1995
    Assignee: Mitsubishi Rayon Company Ltd.
    Inventors: Tatsushi Fukuzumi, Noriyuki Tajiri, Miki Murata, Yasunori Terashima, Tomohiko Yoshida
  • Preparation of alternating olefin/carbon monoxide copolymers by means of a heterogeneous supported catalyst
    Patent number: 5408030
    Abstract: A catalyst active in the preparation of alternating olefin/carbon monoxide (CO) copolymers is constituted by:(a) Pd(O.sub.2 CNEt.sub.2).sub.2 (NHET.sub.2).sub.2 supported on a solid carrier preferably constituted by hydroxylated silica,(b) an either mono- or bidentate ligand containing one or two nitrogen or phosphorous atoms capable of linking to Pd atom by dative bonds,(c) a mineral or organic acid.Disclosed are the preparation of the catalyst and the use of said catalyst in alternated copolymerization of ethylene (C2) and/or other olefins with carbon monoxide (CO).
    Type: Grant
    Filed: February 18, 1994
    Date of Patent: April 18, 1995
    Assignee: Enichem S.p.A.
    Inventors: Anna Sommazzi, Gabriele Lugli, Fabio Garbassi, Fausto Calderazzo, Daniela Belli Dell'Amico
  • Amino acid copolymers of maleic acid
    Patent number: 5408029
    Abstract: Polymers of maleic, fumaric or malic acids or maleic, fumaric or malic acid and ammonia with amino acids are prepared by heating at 180.degree.-350.degree. C., preferably 200.degree.-300.degree. C. The polymer formed may be converted to a salt by hydrolysis with a metal hydroxide or ammonium hydroxide.
    Type: Grant
    Filed: October 6, 1993
    Date of Patent: April 18, 1995
    Assignee: SRCHEM, Inc.
    Inventors: Lousi L. Wood, Gary J. Calton
  • Copolymers of perhalo-2,2-di-loweralkyl-1,3-dioxole, and perfluoro-2-methylene-4-methyl-1,3-dioxolane
    Patent number: 5408020
    Abstract: The comonomers are perfluorocyclic unsaturated compounds, copolymerized to form amorphous copolymer. Such copolymer forms optically clear tough coating and films.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: April 18, 1995
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ming-Hong Hung, Keith W. Palmer, Paul R. Resnick
  • Shark repellant patch
    Patent number: 5407679
    Abstract: A shark repellant patch is provided which includes a highly flexible, impermeable membrane sealing a shark repelling substance to a highly flexible base. The membrane is provided with imperfections that cause the membrane to shear when it is subjected to a predetermined level of force. In one embodiment of the invention, a tab is provided proximate the imperfections to facilitate rupturing the membrane. An adhesive is applied to a portion of the base. An exemplary method of fabrication is also provided.
    Type: Grant
    Filed: January 5, 1994
    Date of Patent: April 18, 1995
    Inventor: Justin Hayes
  • Preparation of copolymers
    Patent number: 5408031
    Abstract: A process for the preparation of copolymers of carbon monoxide and one or more ethylenically unsaturated non-aromatic compounds by contacting the monomers, under polymerization conditions, with a catalyst system consisting essentially of palladium, a bisphosphine ligand and a source of anions, derived from the conjugated base of acids having a pKa of less than 4, in the additional presence of a 1-alkenyl substituted arylgroup containing compound.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: April 18, 1995
    Assignee: Shell Oil Company
    Inventors: Peter A. A. Klusener, Hans A. Stil
  • Solid state polymerization
    Patent number: 5408035
    Abstract: This invention is a process for solid state polymerization of polyester using multiple reactors in series to achieve molecular weight increases, as measured by intrinsic viscosity, in excess of 0.25 dl/g with low levels of undesirable by-products.
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: April 18, 1995
    Assignee: Shell Oil Company
    Inventor: Ben Duh
  • Copolymers having magnetic properties
    Patent number: 5408034
    Abstract: The invention provides copolymers having magnetic properties, said copolymers containing aminoaromatic groups, and being based on a structural unit comprising:a first group of aminoaromatic compounds chosen from aniline derivatives and the corresponding iminoquinone forms; anda second group of substituted aminoaromatic compounds chosen from substituted amino compounds containing at least two condensed benzene rings, substituted polycyclic compounds containing at least one aniline structural unit in their structure, compounds derived from aniline and carrying a substituent bonded to the ring by means of an ethynylidene or paraphenylene link, and the corresponding iminoquinone compounds.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: April 18, 1995
    Assignee: Alcatel Alsthom Compagnie Generale D'Electricite
    Inventors: Stanislas Galaj, Alain Le Mehaute
  • Process for preparing acryl modified polyester resin for use in a powder coating and a powder coating composition containing the same
    Patent number: 5405910
    Abstract: Acryl modified polyester resins are prepared by a process which comprises reacting an acid mixture with an alcohol mixture to form hydroxyl polyester prepolymers, solution polymerizing acryl monomers with acidic acryl monomers having carboxyl groups to form acryl resins, and reacting said hydroxyl polyester prepolymers with said acryl resins and polycarboxylic acids having at least two carboxyl groups.A powder coating composition is composed of inorganic pigment or organic pigment, a flowing agent, a curing agent, a curing accelerator, other stabilizers and the acryl modified polyester resins prepared according to the above process.
    Type: Grant
    Filed: December 12, 1990
    Date of Patent: April 11, 1995
    Assignee: Korea Chemical Co
    Inventors: Weon-seok Kim, Bong-jin Kim
  • Cyclic oligomers for production of linear polyketones, polyphthalazines and polyisoquinolines
    Patent number: 5405956
    Abstract: Low molecular weight cyclic oligomers of formula (I) ##STR1## in which n is an integer of 2 to 20, and each C in the oligomer is a radical of formula (II): ##STR2## and each X in the oligomer is --O--R--O-- or --S--R--S--, B and D are both carbonyl groups CO, or together represent a divalent radical of formula ##STR3## in which A.sub.1, A.sub.2, A.sub.3 A.sub.4, Ar.sub.1, Ar.sub.2 and Ar.sub.3 are selected from a variety of aromatic radicals, A.sub.1, A.sub.2, Ar.sub.3 and Ar.sub.4 also possibly being hydrogen, are useful in the production of high molecular weight, linear, polyketones, polyphthalazines and polyisoquinolines; the cyclic oligomers have low melt viscosities when heated above their softening temperatures and can be readily molded, whereafter they can be rings-open polymerized to form molded high molecular weight polymer products with excellent properties.
    Type: Grant
    Filed: March 1, 1994
    Date of Patent: April 11, 1995
    Inventors: Allan S. Hay, Kwok P. Chan