Patents by Inventor Jacob M. Blass

Jacob M. Blass 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).

  • Dental floss and method of making it
    Patent number: 5220932
    Abstract: A dental floss comprises a monofilament ribbon of oriented non-porous PTFE having a tensile strength of at least 200 MPa, preferably 200-600 MPa, and a coating of wax. Optionally, the wax contains an additive. The wax is applied to the ribbon from a bath of molten wax to a lick roller, whose surface moves relatively to the ribbon at the contact region.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: June 22, 1993
    Assignee: Westone Products Limited
    Inventor: Jacob M. Blass
  • Treatment of cords, threads and filaments
    Patent number: 5021267
    Abstract: A cord, thread or filament is treated by applying to it a dilute solution of a polysiloxane prepolymer which is then cured, such that either (a) the outer envelope of the cord, thread or filament is enrobed, or (b) in the case of a cord or thread, the filaments thereof are substantially individually encapsulated by, a coating of cured polysiloxane polymer. The treated cords, threads and filaments have inter alia improved abrasion and fray resistance, water repellance and slip qualities.
    Type: Grant
    Filed: March 6, 1990
    Date of Patent: June 4, 1991
    Assignee: Cogent Limited
    Inventors: John A. G. Gent, Jacob M. Blass
  • Coating method for forming smooth-ended bristles on a brush
    Patent number: 5015504
    Abstract: The ends of bristles of a brush, e.g. a toothbrush, are treated with a polysiloxane prepolymer which is then cured. The treated bristles are smooth and round-ended.
    Type: Grant
    Filed: March 5, 1990
    Date of Patent: May 14, 1991
    Assignee: Cogent Limited
    Inventors: John A. G. Gent, Jacob M. Blass
  • Dental floss and tape
    Patent number: 4996056
    Abstract: Fluorocarbon polymer powder particles, e.g. particulate PTFE, are included, as a solid lubricant, in the binder applied to dental floss or tape.
    Type: Grant
    Filed: August 14, 1989
    Date of Patent: February 26, 1991
    Assignee: Westone Products Limited
    Inventor: Jacob M. Blass