Patents by Inventor Peter Hänggi

Peter Hänggi 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).

  • Process for the preparation of substituted TRIS(2-hydroxyphenyl)methane
    Patent number: 9475743
    Abstract: Described is a novel process for the preparation of substituted tris(2-hydroxyphenyl)methane derivatives and the use of tris(2-hydroxyphenyl)methane derivatives for tertiary mineral oil production.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: October 25, 2016
    Assignee: Wintershall Holding GmbH
    Inventors: Fabien Jean Brand, Peter Hänggi, Michèle Gerster, Markus Hansch
  • Process For The Preparation Of Substituted TRIS(2-Hydroxyphenyl)Methane
    Publication number: 20160016871
    Abstract: Described is a novel process for the preparation of substituted tris(2-hydroxyphenyl)methane derivatives and the use of tris(2-hydroxyphenyl)methane derivatives for tertiary mineral oil production.
    Type: Application
    Filed: February 28, 2014
    Publication date: January 21, 2016
    Applicant: WINTERSHALL HOLDING GMBH
    Inventors: Fabien Jean Brand, Peter Hänggi, Michèle Gerster, Markus Hansch
  • Process for the Treatment of Metal Coated Particles
    Publication number: 20090280326
    Abstract: The present invention relates to a process for the thermal treatment of metal coated particles, to the particles obtainable by the process and to their use for the manufacture of printable electronics, or for EMI shielding.
    Type: Application
    Filed: April 2, 2007
    Publication date: November 12, 2009
    Inventors: Thomas Giesenberg, Peter Hänggi, Patrice Bujard
  • Polymers produced by atom transfer radical polymerisation technique with structurally modified terminal groups
    Patent number: 7615522
    Abstract: The present invention relates to a block copolymer prepared by ATRP, wherein the polymer chain terminal group is structurally modified with the functionally effective group of a lubricant or polymer additive selected from the group consisting of antioxidants, metal deactivators, antiwear and extreme pressure additives and corrosion inhibitors. The invention also relates to a composition comprising the structurally modified block copolymer and a composition of matter subject to oxidative, thermal or light induced degradation, such as lubricants or polymers.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: November 10, 2009
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Hugo Camenzind, Paul Dubs, Peter Hänggi, Roger Martin, Andreas Mühlebach, François Rime
  • Heterocyclic thioethers as additives for lubricants
    Patent number: 6362138
    Abstract: This invention relates to compounds which are suitable as ash-free antiwear additives and antioxidants, to lubricant compositions comprising said compounds as well as to their use. are particularly preferred. In the preferred compounds I′, R2 is isooctyloxycarbonylmethyl, R3 is isooctyloxycarbonylmethylthiomethyl and R4 is hydrogen; or R2 is tert-nonyl and R3 is tert-nonylthiomethyl and R4 is hydrogen; or R2 is isooctyloxycarbonylmethyl, R3 is hydrogen and R4 is isooctyloxycarbonylmethylthiomethyl; or R2 is tert-nonyl, R3 is hydrogen and R4 I is tert-nonylthiomethyl.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: March 26, 2002
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Hugo Camenzind, Samuel Evans, Alfred Dratva, Peter Hänggi
  • Phosphorus-free multifunctional additives for lubricants
    Patent number: 6255259
    Abstract: Suitable lubricant additives are the compounds of formulae wherein the substituents and groups have the following preferred meanings: R1=H; R2=methyl or tert-butyl; R3=tert-butyl; s=0, 1 or 2; R4=—A—[(C6H2)(methyl or tert-butyl)(OH)(tert-butyl)]; A=—CH2CH2O—(C═O)—CH2CH2— or —CH2CH(CH3)—O—(C═O)—CH2CH2—.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: July 3, 2001
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Hugo Camenzind, Alfred Dratva, Peter Hänggi