Patents by Inventor Edel Wasserman

Edel Wasserman 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).

  • Patent number: 5354926
    Abstract: This invention provides a mixture of fluoroalkylated fullerene compounds, preferably perfluoroalkylated fullerene compounds, comprising the formula, (C.sub.60+2n)R.sup.1.sub.m R.sup.2.sub.b Z.sub.y, wherein R.sup.1 is a branched or straight chain hydrocarbon or aromatic hydrocarbon of from 1 to about 100 carbon atoms; R.sup.2 is a branched or straight chain fluoroalkyl group of from 1 to about 100 carbon atoms; Z is one or more selected from H, F and Cl; n is an integer from 0 to about 470; m is an integer from 0 to about 24+n; b is an integer from 1 to about 24+n; and y is an integer from 0 to about 35+n.
    Type: Grant
    Filed: February 23, 1993
    Date of Patent: October 11, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Paul J. Fagan, Paul J. Krusic, Edel Wasserman
  • Patent number: 4392978
    Abstract: A method and reagent for the selective nitration of aromatic hydrocarbons which comprises contacting a complex of at least a catalytic amount of a polyether with a nitronium containing substance, e.g., NO.sub.2 BF.sub.4 with an aromatic hydrocarbon, e.g., toluene with at least one replaceable hydrogen. Nitration of toluene with these complexes at ambient temperature resulted in a reduction in meta substitution. In competitive studies, soluble crown ether complexes of NO.sub.2 BF.sub.4 in CH.sub.2 Cl.sub.2 nitrated toluene 45-59 times faster than they nitrated benzene.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: July 12, 1983
    Assignee: Allied Corporation
    Inventors: Ronald L. Elsenbaumer, Edel Wasserman
  • Patent number: 4362851
    Abstract: Crystalline adducts of the polyamides: poly-e-caproamide, poly(hexamethylene adipamide), poly-p-benzamide, poly(p-benzanilidene terephthalamide), and mixtures thereof; with the perfluorinated diacids: perfluorosuccinic acid, perfluoroglutaric acid, perfluoroadipic acid, and mixtures thereof. The polyamide components of the adducts contain at least 25 about amide groups in the polymer chain, preferably at least 75 amide groups for aliphatic polyamides and at least 50 amide groups for aromatic polyamides. The adducts can be formed into shaped objects from which diacid can be leached to produce a porous object useful for example as a filtration device.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: December 7, 1982
    Assignee: Allied Corporation
    Inventors: Shaul M. Aharoni, Edel Wasserman