Patents by Inventor John C. Mastrangelo

John C. Mastrangelo 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).

  • Highly conducting and transparent thin films formed from new fluorinated derivatives of 3,4-ethylenedioxythiophene
    Patent number: 6867281
    Abstract: A compound comprising the formula: wherein R1 is a fluorinated organic group and R2 and R3 are independently selected organic groups. A compound comprising the formula: wherein R1 is a fluorinated organic group and R2 and R3 are independently selected organic groups.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: March 15, 2005
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Brett D. Martin, Ranganathan Shashidhar, Nikolay Nikolov, John C. Mastrangelo
  • HIGHLY CONDUCTING AND TRANSPARENT THIN FILMS FORMED FROM NEW FLUORINATED DERIVATIVES OF 3,4-ETHYLENEDIOXYTHIOPHENE
    Publication number: 20040214985
    Abstract: A compound comprising the formula: 1
    Type: Application
    Filed: March 26, 2003
    Publication date: October 28, 2004
    Inventors: Brett D. Martin, R. Shashidhar, Nikolay Nikolov, John C. Mastrangelo
  • Thermotropic chiral nematic liquid crystalline copolymers
    Patent number: 5332522
    Abstract: A thermotropic chiral nematic liquid crystalline copolymer composition comprises ##STR1## wherein --NEM-- and --NEM'-- are each independently nematogenic units of formula ##STR2## wherein R is H or CH.sub.3, --Q-- is an alkylene radical having 1 to about 8 carbon atoms,--X-- is --O--, --S--, or --CH.sub.2 --, --Y-- is ##STR3## --Z is --CN, --NO.sub.2 or --N.dbd.C.dbd.S, q and r are each independently 0 or 1;wherein --CHI-- is a chiral unit of formula ##STR4## wherein R is H or CH.sub.3, --Q'-- is an alkylene radical having 1 to about 8 carbon atoms,--X'-- is --O--, --S--, or --CH.sub.2 --,--Z' is an alkoxy, aralkoxy, alkylamino, or aralkylamino radical having 4 to about 12 carbon atoms and containing at least one asymmetric carbon atom,q' and r' are each independently 0 or 1;and wherein x is the mole fraction of chiral units and (y+y') is the total mole fraction of nematogenic units in said copolymer composition, and the ratio of x to (y+y') is from about 1:50 to 1:1.
    Type: Grant
    Filed: April 29, 1993
    Date of Patent: July 26, 1994
    Assignee: The University of Rochester
    Inventors: Shaw H. Chen, John C. Mastrangelo, Hongqin Shi, Sushil Krishnamurthy