Patents by Inventor Zvi Pelah

Zvi Pelah 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).

  • Salts of polyalkyl vinyl ether maleic anhydride and dental prosthesis adhesive produced therefrom
    Patent number: 5204414
    Abstract: Salts of lower alkyl vinyl ether/maleic anhydride are described as active components in dental adhesives. A process for the preparation of these salts is described.The salts are partially neutralized mixed salts of lower alkyl vinyl ether/maleic anhydride copolymers. The neutralization of the copolymer is effected with aluminum, and calcium and/or sodium.
    Type: Grant
    Filed: July 5, 1990
    Date of Patent: April 20, 1993
    Assignee: Giulini Chemie GmbH
    Inventors: Zvi Pelah, Ernst Urmann, Werner Kopp
  • Process for the production of low viscosity copolymers from maleic acid monoalkyl esters and vinyl alkyl ethers
    Patent number: 5187308
    Abstract: The present invention relates to a novel process for the production of low viscosity copolymers of maleic acid monoalkyl ester and vinyl alkyl ethers characterized in that the copolymerization of alkyl vinyl ether is performed with a mixture composed of maleic acid anhydride and maleic acid monoalkyl ester. The specific viscosity is controlled by the setting of a certain maleic acid anhydride to maleic acid monoalkyl ester ratio.
    Type: Grant
    Filed: November 14, 1990
    Date of Patent: February 16, 1993
    Assignee: Giulini Chemie GmbH
    Inventors: Zvi Pelah, Istvan Potencsik, Werner Kopp, Ernst Urmann
  • Insecticidal composition comprising diazinon and process for the preparation thereof
    Patent number: 4851227
    Abstract: The invention provides an insecticidal composition comprising Diazinon ensulated in microcapsules, the microcapsules having an encapsulating wall formed essentially from the reaction product of toluene diisocyanate and a polyfunctional amine, and further provides a process for encapsulating Diazinon in a microcapsular formulation comprising providing an aqueous phase containing a non-basic emulsifier, providing an organic phase containing toluene diisocyanate and Diazinon, combining the aqueous and organic phase to form an oil in water emulsion, and adding an aqueous solution of a polyfunctional amine with agitation to the emulsion, whereby the amine reacts with the toluene diisocyanate to form microcapsular envelopes about the Diazinon material.
    Type: Grant
    Filed: July 29, 1987
    Date of Patent: July 25, 1989
    Assignee: Ben-Gurion University of the Negev Research & Development Authority
    Inventors: Arie Markus, Zvi Pelah