Patents by Inventor Aziz E. Sayed

Aziz E. Sayed 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).

  • Polyamide compounds containing diepoxide and having high viscosity
    Patent number: 5605945
    Abstract: The invention relates to polyamide molding compounds with increased viscosity, high thermal stability and favorable mechanical properties, to a process for their production and to their use.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: February 25, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventors: Aziz E. Sayed, Edgar Ostlinning, Karsten-Josef Idel, Hubert Goldbach, Dieter L ohr, Ralf Lange
  • Method for the identification of plastics
    Patent number: 5329127
    Abstract: A method of identifying different plastics, wherein each plastic is provided with a plurality of fluorescent dyes which differ in terms of their emission frequencies and/or in terms of the duration of their fluorescence, so that a fluorescence pattern, which is distinguished by the duration of the fluorescence and/or by the frequencies occurring, can unambiguously be assigned to each plastic.
    Type: Grant
    Filed: April 12, 1993
    Date of Patent: July 12, 1994
    Assignee: Bayer AG
    Inventors: Arno Becker, Klaus Luttermann, Uwe Claussen, Peter Orth, Ludger Heiliger, Aziz E. Sayed
  • Free-flowing polyamide molding compounds
    Patent number: 5143956
    Abstract: The invention relates to free-flowing polyamide molding compounds which are characterized by a content of new liquid-crystalline compounds corresponding to general formulae (I) and/or (II) and to the new liquid-crystalline compounds corresponding to general formulae (I) and/or (II).
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: September 1, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Harald Pielartzik, Hans-Detlef Heinz, Rolf Dhein, Aziz E. Sayed
  • Polyamide molding compounds containing bisphenols of high glass temperature
    Patent number: 5128400
    Abstract: The invention relates to thermoplastic molding compounds based on polyamides and bisphenols having glass temperatures equal to or above those of the polyamides used, the bisphenols corresponding to the following formula ##STR1## The invention also relates to a process for their production and to their use for the production of moldings, films, fibers and other articles.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: July 7, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Detlef Heinz, Aziz E. Sayed, Ralf Dujardin, Rolf Dhein
  • Special polyimides as thermoplasts
    Patent number: 4908429
    Abstract: This invention relates to thermoplastic polyimides of 2,2-bis-phtalic acid anhydro-(4)-propane and 2,2-bis-(4-aminophenoxyphenyl-propane.
    Type: Grant
    Filed: May 5, 1988
    Date of Patent: March 13, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wilfried Zecher, Dieter Arlt, Aziz E. Sayed
  • Thermotropic, fully aromatic polyesters with excellent figidity and toughness, a process for their preparation and their use for the production of shaped articles, filaments, fibres and films
    Patent number: 4780525
    Abstract: Thermotropic, fully aromatic polyesters of p-hydroxybenzoic acid, 3,4'-benzophenone-dicarboxylic acid and certain bisphenols have a previously unknown combination of very high rigidity and high toughness.
    Type: Grant
    Filed: September 15, 1986
    Date of Patent: October 25, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Volker Eckhardt, Hans-Rudolf Dicke, Ludwig Bottenbruch, Aziz E. Sayed
  • Thermotropic aromatic polyesters with good rigidity and toughness, process for the production thereof and the use thereof for the production of mouldings, filaments fibres and films
    Patent number: 4600764
    Abstract: Thermotropic fully-aromatic polyesters which contain radicals of 3,4'- and/or 4,4'-dihydroxybenzophenone in addition to radicals of p-hydroxybenzoic acid, iso- and optionally terephthalic acid, hydroquinone and/or 4,4'-dihydroxydiphenyl, have good rigidity and toughness and yet are easily processible.
    Type: Grant
    Filed: April 15, 1985
    Date of Patent: July 15, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Rudolf Dicke, Ludwig Bottenbruch, Dieter Freitag, Aziz E. Sayed
  • Thermotropic, aromatic polyester carbonates, process for the production thereof and mouldings, filaments, fibers and films thereof
    Patent number: 4579934
    Abstract: Thermotropic, wholly-aromatic polyester carbonates which contain condensed radicals of 4,4'-dihydroxydiphenyl have a reduced viscosity in the melt, without the mechanical properties of the product suffering therefrom.
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: April 1, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hermann Brinkmeyer, Manfred Schmidt, Hermann Perrey, Aziz E. Sayed