Patents by Inventor Mario E. C. Polywka

Mario E. C. Polywka 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).

  • Organic compounds
    Patent number: 4981984
    Abstract: Langmuir Blodgett films are provided having second order molecular hyperpolarizability of at least 30.10.sup.-50 C.sup.3 m.sup.3 J.sup.-2. combined with chemical stability and a melting point of over 70.degree..They also have desirable pyroelectric properties shown by a static pyroelectric coefficient of at least 0.0039 nCcm.sup.2 k.sup.-1. The films comprise compounds of the following formula: ##STR1## wherein M is ruthenium, iron or cobalt; R.sup.1 is cyclopentadienyl, methylcyclopentadienyl, pentamethylcyclopentadienyl or indenyl;A.sup.1 is (R.sup.2).sub.3 Z or carbonyl;Q.sup.2 is (R.sup.2).sub.3 Z or carbonyl;Z is phosphorus or arsenic;R.sup.2 is an aryl of alkyl radical;A is ##STR2## Y is a straight chain alkyl or alkoxy radical comprising from 3 to 17 carbon atoms, or, when A is ##STR3## N(R.sup.3).sub.2 ; R.sup.3 is a lower alkyl radical comprising up to 5 carbon atoms; andX is PF.sub.6 or BF.sub.4.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: January 1, 1991
    Assignee: Thorn Emi plc
    Inventors: Stephen G. Davies, Timothy Richardson, Gareth G. Roberts, Mario E. C. Polywka