Patents by Inventor John Hobes

John Hobes has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Graft polymer based on ultrahigh molecular weight polyethylene
    Patent number: 5356998
    Abstract: A graft polymer based on an ultrahigh molecular weight polyethylene having a molecular weight of at least 1,000,000 g/mol and an alkenecarboxylic acid or alkenecarboxylic anhydride as the graft monomer; the polymer has modified and improved properties compared with ultrahigh molecular weight polyethylene. The preparation and use thereof are also described.
    Type: Grant
    Filed: August 9, 1993
    Date of Patent: October 18, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventor: John Hobes
  • Terpolymers of ethylene, their preparation, and their use as additives for mineral oil distillates
    Patent number: 5254652
    Abstract: Terpolymers which are copolymers of ethylene, vinyl acetate, and vinyl neononanoate or vinyl neodecanoate, a process for their preparation, and a method of their use as additives for mineral oil distillates.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: October 19, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Werner Reimann, Michael Feustel, John Hobes
  • Graft copolymer based on an ultrahigh-molecular-weight polyethylene and an ethylene copolymer
    Patent number: 5183855
    Abstract: A graft copolymer based on ultrahigh-molecular-weight polyethylene having a molecular weight .gtoreq. 1,000,000 g/mol, an ethylene copolymer and a graft monomer; and the preparation and use thereof. The ethylene copolymer contains ethylene and vinyl acetate or ethylene and an alkenecarboxylic acid ester. The graft monomer is an alkenecarboxylic acid or an alkenecarboxylic anhydride. The resultant graft polymers posses improved properties compared with the materials from which they are derived.
    Type: Grant
    Filed: September 19, 1991
    Date of Patent: February 2, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: John Hobes, Christiane Barth
  • Copolymers of ethylene and 2,4,4-trimethylpentene-1
    Patent number: 4883853
    Abstract: Novel copolymers of ethylene containing per 100 parts by weight ethylene 0.2 to 5.0 parts by weight of 2,4,4-trimethylpentene-(1) and optionally 2.0 to 20 parts by weight of vinyl ester or vinyl ether or ester of acrylic acid or methacrylic acid with alcohols of 1 to 8 carbon atoms having a melt index MFI (190/2.16) of 0.4 to 20 g/10 min. a density of 0.915 to 0.960 g/ml and an impact tensile strength of 850 to 2,600 mJ/mm.sup.2 and a process for their preparation useful for making transparent films.
    Type: Grant
    Filed: May 29, 1987
    Date of Patent: November 28, 1989
    Assignee: Ruhrchemie Aktiengesellachaft
    Inventors: John Hobes, Wolfgang Payer, Ludger Bexten
  • Ethylene copolymers
    Patent number: 4772673
    Abstract: Waxy highly branched copolymers having a molecular weight of 500 to 20,000 comprised of at least 60% by weight of ethylene, 1 to 39% by weight of an alkene carboxylic acid ester and/or a vinyl ester and 1-30% by weight of a vinyl ketone produced by polymerization at 100 to 350.degree. C. and a pressure of about 1,000 to 8,000 bar in the presence of a radical forming initiator and in the absence of a solvent useful as oil additives to improve flow characteristics of crude oils and middle distillates derived from crude oil.
    Type: Grant
    Filed: April 15, 1987
    Date of Patent: September 20, 1988
    Assignee: Ruhrchemie Aktiengesellschaft
    Inventors: John Hobes, Karl H. Heier
  • Process for the homo- and copolymerization of ethylene
    Patent number: 4663301
    Abstract: The homo- or copolymerization of ethylene at temperatures of 150.degree. C. to 350.degree. C. and pressures of 300 to 3500 bar is carried out in the presence of catalysts having an organometallic compound of a metal of Group III of the Periodic Table of the Elements and a titanium compound. The titanium compound is the reaction product of (a) a titanic acid ester and (b) the product of the reaction of a magnesium alcoholate and a halogen-containing aluminum alkyl compound.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: May 5, 1987
    Assignee: Ruhrchemie Aktiengesellschaft
    Inventors: Hermann Morguet, John Hobes, Walter Spaleck, Wolfgang Payer
  • Process for the homo- and copolymerization of ethylene
    Patent number: 4590247
    Abstract: The homo- or copolymerization of ethylene at temperatures of 150.degree. C. to 350.degree. C. and pressures of 300 to 3500 bar is carried out in the presence of catalysts having an organometallic compound of a metal of Group III of the Periodic Table of the Elements and a titanium compound. The titanium compound is the reaction product of (a) a titanic acid ester and (b) the product of the reaction of a magnesium alcoholate and a halogen-containing aluminum alkyl compound.
    Type: Grant
    Filed: October 1, 1984
    Date of Patent: May 20, 1986
    Assignee: Ruhrchemie Aktiengesellschaft
    Inventors: Hermann Morguet, John Hobes, Walter Spaleck, Wolfgang Payer
  • Process for preparing free-flowing ethylene homopolymers or copolymer waxes
    Patent number: 4529132
    Abstract: The invention relates to the preparation of free-flowing homopolymer and copolymer waxes by heating the solid or molten waxes in aqueous ammonia solution.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: July 16, 1985
    Assignee: Ruhrchemie Aktiengesellschaft
    Inventors: John Hobes, Detlef Deymann
  • Coal/diesel fuel suspensions containing wax-like polymers
    Patent number: 4474578
    Abstract: The present invention relates to the stabilization of a carbonaceous combustible solid-diesel fuel suspension by inclusion therein of wax-like polymers in an amount of at least 0.2% by weight of the stabilized suspension. The polymers preferred are homopolymers of .alpha. -olefins, and copolymers of ethylene and at least one other monomer copolymerizable therewith wherein the ethylene portion constitutes at least 60% by weight of the copolymer.
    Type: Grant
    Filed: April 7, 1982
    Date of Patent: October 2, 1984
    Assignee: Ruhrchemie Aktiengesellschaft
    Inventors: Boy Cornils, Mufit Bahadir, John Hobes, Winfried Materne
  • Process for preparing pulverulent ethylene polymers
    Patent number: 4446311
    Abstract: A process for preparing pulverulent ethylene homopolymers or copolymers with a grain size of less than 200 .mu.m which comprises contacting coarse-particled ethylene homopolymers or copolymers in the form of a suspension with an aliphatic ketone containing 3 to 10 carbon atoms, heating the same with a mixture of said ketone up to a temperature above the softening point of the polymer and thereafter cooling the same.
    Type: Grant
    Filed: June 14, 1982
    Date of Patent: May 1, 1984
    Assignee: Ruhrchemie Aktiengesellschaft
    Inventors: John Hobes, Wolfgang Payer, Detlef Deymann
  • Composition and use of ethylene copolymerizates as fusible adhesive
    Patent number: 4129472
    Abstract: A fusion adhesive comprising an olefin copolymer comprising 70 to 95 percent by weight ethylene, 0.5 to 10 percent by weight of an amide of an unsaturated carboxylic acid and 0.5 to 15 percent by weight of an unsaturated carboxylic acid, the use of such fusion adhesive to secure two objects together, especially a polymeric plastic composition to a metal composition.
    Type: Grant
    Filed: May 13, 1977
    Date of Patent: December 12, 1978
    Assignee: Ruhrchemie Aktiengesellschaft
    Inventors: John Hobes, Wolfgang Payer