Patents by Inventor Boris S. Elman

Boris S. Elman 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).

  • Chemical modification of solid, fully crystalline polydiacetylenes
    Patent number: 4699953
    Abstract: Chemical modification of crystalline poly-1,6-di-(N-carbazolyl)-2,4-hexadiyne is disclosed. There is provided a chlorinated poly-1,6-di-(N-carbazolyl)-2,4-hexadiyne having at least 12 chlorine atoms per repeat unit. The chlorinated poly-1,6-di(N-carbazolyl)-2,4-hexadiyne of the invention is characterized by a Fourier transform infrared (FTIR) spectrum including peaks at about 745.+-.5, 798.+-.5, and 851.+-.5 cm.sup.-1. There is also provided a nitrated poly-1,6-di-(N-carbazolyl)-2,4-hexadiyne having at least 2 nitro groups per repeat unit. The nitrated poly-1,6-di-(N-carbazolyl)-2,4-hexadiyne of the invention is characterized by an FTIR spectrum including absorption at about 1511.+-.5, 1342.+-.5, 794.+-.5, 751.+-.5, and 718.+-.5 cm.sup.-1.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: October 13, 1987
    Assignee: GTE Laboratories Incorporated
    Inventors: Daniel J. Sandman, Boris S. Elman, Christopher S. Velazquez
  • Chemical modification of polydiacetylene crystals
    Patent number: 4681920
    Abstract: Crystalline brominated poly-1,6-di-(N-carbazolyl)-2,4-hexadiyne having at least two bromine atoms per repeat unit is disclosed. The crystalline brominated poly-1,6-di-(N-carbazolyl)-2,4-hexadiyne of the invention is characterized by a Fourier transform infrared spectrum which includes absorption at 795.+-.5, 835.+-.5, and 865.+-.5 cm.sup.-1. A method for preparing the crystalline brominated poly-1,6-di-(N-carbazolyl)-2,4-hexadiyne of the invention is also disclosed.
    Type: Grant
    Filed: July 3, 1985
    Date of Patent: July 21, 1987
    Assignee: GTE Laboratories Incorporated
    Inventors: Daniel J. Sandman, Boris S. Elman
  • Chemical modification of solid, fully crystalline polydiacetylenes
    Patent number: 4665133
    Abstract: Chemical modification of crystalline poly-1,6-di-(N-carbazolyl)-2,4-hexadiyne is disclosed. There is provided a chlorinated poly-1,6-di-(N-carbazolyl)-2,4-hexadiyne having at least 12 chlorine atoms per repeat unit. The chlorinated poly-1,6-di-(N-carbazolyl)-2,4-hexadiyne of the invention is characterized by a Fourier transform infrared (FTIR) spectrum including peaks at about 745.+-.5, 798.+-.5, and 851.+-.5 cm.sup.-1. There is also provided a nitrated poly-1,6-di-(N-carbazolyl)-2,4-hexadiyne having at least 2 nitro groups per repeat unit. The nitrated poly-1,6-di-(N-carbazolyl)-2,4-hexadiyne of the invention is characterized by an FTIR spectrum including absorption at about 1511.+-.5, 1342.+-.5, 794.+-.5, 751.+-.5, and 718.+-.5 cm.sup.-1.
    Type: Grant
    Filed: July 3, 1985
    Date of Patent: May 12, 1987
    Assignee: GTE Laboratories Incorporated
    Inventors: Daniel J. Sandman, Boris S. Elman, Christopher S. Velazquez
  • Ion implanted polydiacetylenes
    Patent number: 4647403
    Abstract: Ion implanted polydiacetylenes prepared by implanting ions into substituted polydiacetylenes at fluence levels from about 1.times.10.sup.13 ions/cm.sup.2 to about 1.times.10.sup.17 ions/cm.sup.2 are disclosed. Ion implanted polydiacetylenes exhibit electrical and/or optical properties which are different from those of untreated polydiacetylenes.
    Type: Grant
    Filed: July 13, 1984
    Date of Patent: March 3, 1987
    Assignee: GTE Laboratories Incorporated
    Inventors: Boris S. Elman, Daniel J. Sandman, Sukant K. Tripathy, Mrinal K. Thakur