Patents by Inventor Martel Zeldin

Martel Zeldin 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).

  • Fluoride ion releasing dental materials
    Patent number: 5705581
    Abstract: Described are novel fluoride ion-releasing acrylic or methacrylic acid-based monomers, fluoride ion-releasing dental resin materials prepared from the monomers, and processes for preparing the monomers and dental resin materials. The monomers of the invention are prepared in good yield from readily available starting materials. Dental resin materials of the invention exhibit excellent sustained fluoride ion release.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 6, 1998
    Assignee: Indiana University Foundation
    Inventors: Wilmer K. Fife, Martel Zeldin, Slawomir Rubinsztajn
  • Methods and compositions for interfacially bonding mineral surfaces and the like
    Patent number: 5693172
    Abstract: Described are preferred methods for promoting interfacial bonding between surfaces containing oxide, hydrous oxide or hydroxyl groups. The methods involve attaching silane coupling agents to the opposed surfaces and, in turn, bonding the opposed silane coupling agents to each other to thereby promote interfacial bonding between the surfaces. Also described are preferred compositions for promoting such interfacial bonding.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 2, 1997
    Inventors: Martel Zeldin, Wilmer K. Fife
  • Fluoride ion releasing dental materials
    Patent number: 5639840
    Abstract: Described are novel fluoride ion-releasing acrylic or methacrylic acid-based monomers, fluoride ion-releasing dental resin materials prepared from the monomers, and processes for preparing the monomers and dental resin materials. The monomers of the invention are prepared in good yield from readily available starting materials. Dental resin materials of the invention exhibit excellent sustained fluoride ion release.
    Type: Grant
    Filed: January 26, 1995
    Date of Patent: June 17, 1997
    Assignee: Indiana University Foundation
    Inventors: Wilmer K. Fife, Martel Zeldin, Slawomir Rubinsztajn
  • Process for hydrolyzing esters using 4-aminopyridyl siloxane catalysts
    Patent number: 5442106
    Abstract: Described are preferred processes for hydrolyzing activated esters using, as catalysts, siloxanes having 4-dialkylaminopyridyl groups incorporated into their polymer backbones. The preferred siloxane catalyst materials demonstrate unexpected catalytic efficacy in the hydrolysis as well as enzyme-like selectivity for ester substrates.
    Type: Grant
    Filed: April 15, 1994
    Date of Patent: August 15, 1995
    Assignee: Indiana University Foundation
    Inventors: Martel Zeldin, Wilmer K. Fife, Slawomir Rubinsztajn
  • Methods and compositions for interfacially bonding mineral surfaces and the like
    Patent number: 5427860
    Abstract: Described are preferred methods for promoting interfacial bonding between surfaces containing oxide, hydrous oxide or hydroxyl groups. The methods involve attaching silane coupling agents to the opposed surfaces and, in turn, bonding the opposed silane coupling agents to each other to thereby promote interfacial bonding between the surfaces. Also described are preferred compositions for promoting such interfacial bonding.
    Type: Grant
    Filed: October 7, 1992
    Date of Patent: June 27, 1995
    Inventors: Martel Zeldin, Wilmer K. Fife
  • Aminopyridyl siloxanes
    Patent number: 5194555
    Abstract: Silanes and Siloxanes incorporating the 4-dialkylaminopyridine functionality are described. Preferred silanes are catalytically active and also serve as precursors to the siloxanes. Preferred polysiloxanes incorporating DAAP functionality exhibit excellent physical and dynamic-mechanical properties while maintaining a substantial percentage of the DAAP catalytic behavior.
    Type: Grant
    Filed: March 5, 1991
    Date of Patent: March 16, 1993
    Assignee: Indiana University Foundation
    Inventors: Martel Zeldin, Wilmer K. Fife, Slawomir Rubinsztajn
  • Aminopyridyl silanes
    Patent number: 4997944
    Abstract: Silanes and siloxanes incorporating the 4-dialkylaminopyridine functionality are described. Preferred silanes are catalytically active and also serve as precursors to the siloxanes. Preferred siloxanes incorporating DAAP functionality exhibit excellent physical and dynamic-mechanical properties while maintaining a substantial percentage of the DAAP catalytic behavior.
    Type: Grant
    Filed: January 18, 1990
    Date of Patent: March 5, 1991
    Assignee: Indiana University Foundation
    Inventors: Martel Zeldin, Wilmer K. Fife
  • Silanes
    Patent number: 4855433
    Abstract: Novel silylpyridine monomers and dimers and their N-oxide derivatives and poly(methylpyridinylsiloxane) polymers and copolymers and their N-oxide derivatives have utility as inverse phase transfer catalysts.
    Type: Grant
    Filed: March 29, 1988
    Date of Patent: August 8, 1989
    Assignee: Indiana University Foundation
    Inventor: Martel Zeldin