Patents Represented by Attorney A. P. Mentis

Find this attorney in the Justia Lawyer Directory

  • Hexaarylbiimidazole polymers
    Patent number: 4009040
    Abstract: Polymers containing hexaarylbiimidazole groups depolymerize upon being struck by radiation and are useful in producing positive images. Exemplary is poly[1,10-bis-4'-[5"(2-o-chlorophenyl-4"-phenyl)imidazolyl]phenoxydecane].
    Type: Grant
    Filed: May 21, 1975
    Date of Patent: February 22, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William John Nebe
  • N-cycloalkyl substituted-10,11-dihydro 5H-dibenzo[a,d] cyclohepten-5-imines
    Patent number: 3954865
    Abstract: 5H-dibenzo[a,d]cyclohepten-5-imines having a cyclic alkyl group, such as cyclopropyl or cyclobutyl, and their 10,11-dihydro derivatives, are useful as plasticizers for polymers and also for their effect on the central nervous systems of mammals.
    Type: Grant
    Filed: October 23, 1974
    Date of Patent: May 4, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Engelbert Ciganek