Patents by Inventor Manfred Akstinat

Manfred Akstinat 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).

  • Acrylic copolymers
    Patent number: 6043329
    Abstract: Copolymers which are obtainable by reacting acrylic monomers with monomers of the following formula:R.sub.4 --O--R.sub.5 --CO--NH--R.sub.6wherein R.sub.4 represents H or a group of the following formulae: ##STR1## R.sub.5 represents an oxyalkenyl group of the following formulae:--(CHR.sub.1 --CH.sub.2 --O).sub.m -- or --(CHR.sub.1 --CH.sub.2 --O).sub.m1 --(CH.sub.2 --CH.sub.2 --O).sub.n --R.sub.6 represents a C.sub.1 - to C.sub.8 -alkyl group, a C.sub.5 - to C.sub.7 -cycloalkyl group, or a phenyl group. The copolymers are very useful as additives or admixtures for improving the properties of construction materials and of dispersions.
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: March 28, 2000
    Assignee: Cement Intellectual Property Ltd. (CIP)
    Inventors: Agostino Lepori, Stefan Pieh, Manfred Akstinat, Fritz Burkhardt
  • Method for after treatment of surfaces of cured and non-cured binder suspensions with colloid solutions
    Patent number: 5925416
    Abstract: Colloids of non-metals or metals, their oxides, hydroxides, oxihydrates and/or polymers (such as, e.g., heteropolyacids) are used in a method for reducing the susceptibility to fissuring in the curing of non-cured binder suspensions (such as, e.g., unset concrete, ready-mix) and for aftertreating already cured binder suspensions (such as, e.g., concrete).
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: July 20, 1999
    Assignee: Holderchem Holding AG
    Inventors: Manfred Akstinat, Willi Suter