Patents by Inventor Raef M. Tadros

Raef M. Tadros 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).

  • Smoke producing mortar cartridge
    Patent number: 7404358
    Abstract: A mortar cartridge generates effective white or colored smoke obscuration with reduced adverse environmental impact and collateral damage and provides an improved drag assembly that reduces drift during projectile descent and improves targeting.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: July 29, 2008
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Raef M. Tadros, Efthimios Papayianis, Allen A. Dehaghani, Anthony Martuccio, Raymond S. Trohanowsky, James Marlin Pennington
  • Smoke producing mortar cartridge
    Patent number: 7124690
    Abstract: A mortar cartridge generates effective white or colored smoke obscuration with reduced adverse environmental impact and collateral damage, and provides an improved drag assembly that reduces drift during projectile descent and improves targeting.
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: October 24, 2006
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Raef M. Tadros, Efthimios Papayianis, Allen A. Dehaghani, Anthony Martuccio, Raymond S. Trohanowsky, James Marlin Pennington
  • Smoke generating compositions and methods of making the same
    Patent number: 6558487
    Abstract: A smoke generating composition including at least one smoke generating material and an effective amount of a polymerized monosaccharide or disaccharide as a binder. The polymerized monosaccharide or disaccharide serves the dual purpose of being both a binder and a fuel to provide a more efficient and safer smoke generating composition.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: May 6, 2003
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Raef M. Tadros
  • Degradable polyesters, a mixed culture of microorganisms for degrading these polyesters, and methods for making these substances
    Patent number: 6191176
    Abstract: Degradable polyesters useful in packaging, packing, agricultural, biomedical, and other applications are made by reacting amine-protected glutamic acid with diols or epoxy compounds. The polyesters include a thermoplastic main chain aliphatic polyester, a thermoset heterochain polyester and a thermoset heterochain aromatic polyester. Each of these polyesters can be hydrolyzed into monomers using a biological catalyst such as the enzyme lipase. The thermoplastic main chain aliphatic polyester and the thermoset heterochain polyester can be degraded to respiratory gases and biomass with a mixed culture of Rhizopus chinesis, Rhizopus delemar, Penecillium pinophilum, Aspergillus niger and Pseudomonas aeruginosa microorganisms. This mixed culture of microorganisms can also be used to degrade other polyesters containing hydrolyzable backbone polyesters.
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: February 20, 2001
    Assignee: Board of Regents of University of Nebraska
    Inventors: Raef M. Tadros, Delmar C. Timm
  • Degradable polyesters, a mixed culture of microorganisms for degrading these polyesters, and methods for making these substances
    Patent number: 6121033
    Abstract: Degradable polyesters useful in packaging, packing, agricultural, biomedical, and other applications are made by reacting amine-protected glutamic acid with diols or epoxy compounds. The polyesters include a thermoplastic main chain aliphatic polyester, a thermoset heterochain polyester and a thermoset heterochain aromatic polyester. Each of these polyesters can be hydrolyzed into monomers using a biological catalyst such as the enzyme lipase. The thermoplastic main chain aliphatic polyester and the thermoset heterochain polyester can be degraded to respiratory gases and biomass with a mixed culture of Rhizopus chinesis, Rhizopus delemar, Penecillium pinophilum, Aspergillus niger and Pseudomonas aeruginosa microorganisms. This mixed culture of microorganisms can also be used to degrade other polyesters containing hydrolyzable backbone polyesters.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: September 19, 2000
    Assignee: The Board of Regents of the University of Nebraska
    Inventors: Raef M. Tadros, Delmar C. Timm
  • Degradable polyesters, a mixed culture of microorganisms for degrading these polyesters, and methods for making these substances
    Patent number: 5990266
    Abstract: Degradable polyesters useful in packaging, packing, agricultural, biomedical, and other applications are made by reacting amine-protected glutamic acid with diols or epoxy compounds. The polyesters include a thermoplastic main chain aliphatic polyester, a thermoset heterochain polyester and a thermoset heterochain aromatic polyester. Each of these polyesters can be hydrolyzed into monomers using a biological catalyst such as the enzyme lipase. The thermoplastic main chain aliphatic polyester and the thermoset heterochain polyester can be degraded to respiratory gases and biomass with a mixed culture of Rhizopus, chinesis, Rhizopus delemar, Penecillium pinophilum, Aspergillus niger and Pseudomonas aeruginosa microorganisms. This mixed culture of microorganisms can also be used to degrade other polyesters containing hydrolyzable backbone polyesters.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: November 23, 1999
    Assignee: University of Nebraska
    Inventors: Raef M. Tadros, Delmar C. Timm