Patents by Inventor Hamid Hajiseyedjavadi

Hamid Hajiseyedjavadi 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).

  • Electromagnetic radiation absorbers and modulators comprising polyaniline
    Patent number: 5563182
    Abstract: A method of providing electronic shielding comprising providing a layer of a polyaniline composition on the object to be shielded, whereby the entrance and egress of electromagnetic radiation is prevented. Also presented herein is a method of changing the absorption by a polyaniline composition of electromagnetic radiation by modifying the chemical structure and crystallinographic order of the polyaniline composition, wherein said composition comprises a composition of the formula ##STR1## where y can be equal to or greater than zero, and R.sup.1 and R.sup.2 are independently selected from the group consisting of --H, --OCH.sub.3, --F, --Cl, --Br, --I, --NR.sup.3.sub.2, --NHCOR.sup.3, --OH, --O, --SR.sup.3, --OR.sup.3, --OCOR.sup.3, --NO.sub.2, --COOH, --COOR.sup.3, --R.sup.3 SO.sub.3 H, --COR.sup.3, --CHO, and --CN, where R.sup.3 is a C.sub.1 to C.sub.8 alkyl, aryl, or aralkyl group.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 8, 1996
    Assignee: The Ohio State University Research Foundation
    Inventors: Arthur J. Epstein, Mitchell G. Roe, John M. Ginder, Hamid Hajiseyedjavadi, Jinsoo Joo
  • Electromagnetic radiation absorbers and modulators comprising polyaniline
    Patent number: 5463014
    Abstract: A method of providing electronic shielding comprising providing a layer of a polyaniline composition on the object to be shielded, whereby the entrance and egress of electromagnetic radiation is prevented. Also presented herein is a method of changing the absorption by a polyaniline composition of electromagnetic radiation by modifying the chemical structure and crystallinographic order of the polyaniline composition, wherein said composition comprises a composition of the formula ##STR1## where y can be equal to or greater than zero, and R.sup.1 and R.sup.2 are independently selected from the group consisting of --H, --OCH.sub.3, --F, --Cl, --Br, --I, --NR.sup.3.sub.2, --NHCOR.sup.3, --OH, --O, --SR.sup.3, --OR.sup.3, --OCOR.sup.3, --NO.sub.2, --COOH, --COOR.sup.3, --R.sup.3 SO.sub.3 H, --COR.sup.3, --CHO, and --CN, where R.sup.3 is a C.sub.1 to C.sub.8 alkyl, aryl, or aralkyl group.
    Type: Grant
    Filed: February 8, 1994
    Date of Patent: October 31, 1995
    Assignee: The Ohio State University Research Foundation
    Inventors: Arthur J. Epstein, Mitchell G. Roe, John M. Ginder, Hamid Hajiseyedjavadi, Jinsoo Joo
  • Electromagnetic radiation absorbers and modulators comprising polyaniline
    Patent number: 5147968
    Abstract: A composition for absorbing electromagnetic radiation (such as microwave, infrared, visible light radiation ultraviolet radiation), wherein said electromagnetic radiation possesses a wavelength generally in the range of from about 1000 Angstroms to about 50 meters, wherein said composition comprises a polyaniline composition of the formula ##STR1## where y can be equal to or greater than zero and R' and R.sub.2 are independently selected from the group consisting of --H, --OCH.sub.3, --CH.sub.3, --F, --Cl, --Br, --I, --NR.sup.3.sub.2, --NHCOR.sub.3, --OH, --O, --SR.sup.3, --OR.sup.3, --OCOR.sup.3, --NO.sub.2, --COOH, --COOR.sup.3, --COR.sup.3, --CHO, and --CN, where R.sup.3 is a C.sub.1 to C.sub.a alkyl, aryl or aralkyl group.
    Type: Grant
    Filed: September 23, 1991
    Date of Patent: September 15, 1992
    Assignee: The Ohio State University Research Foundation
    Inventors: Arthur J. Epstein, John M. Ginder, Mitchell G. Roe, Hamid Hajiseyedjavadi
  • Electromagnetic radiation absorbers and modulators comprising polyaniline
    Patent number: 5079334
    Abstract: A composition for absorbing electromagnetic radiation, wherein said electromagnetic radiation possesses a wavelength generally in the range of from about 1000 Angstroms to about 50 meters, wherein said composition comprises a polyaniline composition of the formula ##STR1## where y can be equal to or greater than zero, and R.sup.1 and R.sup.2 are independently selected from the group containing of H, --OCH.sub.3, --CH.sub.3, --F, --Cl, --Br, --I, NR.sup.3 .sub.2, --NHCOR.sup.3, --OH, --O.sup.-, SR.sup.3, --OCOR.sup.3, --NO.sub.2, --COOH, --COOR.sup.3, --COR.sup.3, --CHO, and --CN, where R.sup.3 is a C.sub.1 to C.sub.8 alkyl, aryl or aralkyl group.
    Type: Grant
    Filed: May 13, 1988
    Date of Patent: January 7, 1992
    Assignee: The Ohio State University Research Foundation
    Inventors: Arthur J. Epstein, John M. Ginder, Mitchell G. Roe, Hamid Hajiseyedjavadi