Patents by Inventor by Ester H. Mark, representative

by Ester H. Mark, representative 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).

  • Polyestercarbonate containing divalent residue of polymerized alkadiene monomer
    Patent number: 4871830
    Abstract: An aromatic ester carbonate resin comprised of:(i) at least one recurring structural unit represented by the formula ##STR1## (ii) at least one recurring structural unit selected from structural units represented by the formulae ##STR2## or mixtures thereof; and (iii) at least one recurring structural unit represented by the formula ##STR3## (iv) at least one recurring structural unit selected from structural units represented by the formulae ##STR4## or mixtures thereof; wherein R is independently selected from halogen, monovalent hydrocarbon radicals, or monovalent hydrocarbonoxy radicals,W is selected from divalent hydrocarbon radicals, ##STR5## A is the divalent residue of at least one polymerized conjugated alkadiene and has a weight average molecular weight of at least about 600,m is independently selected from integers having a value of from 0 to 4, andb is either zero or one, andwherein B is the divalent residue of an ester precursor.
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: October 3, 1989
    Inventors: Victor Mark, deceased, by Carol M. Mark, representative, by Ester H. Mark, representative, Edward N. Peters