Patents by Inventor David Ernest Washburn

David Ernest Washburn 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).

  • Process for making security paper
    Patent number: 6139065
    Abstract: Security paper, security documents made from the security paper, and processes for making the security paper, are provided. A filament is bonded and embedded into paper which has previously been manufactured. The filament is bonded to the paper by an adhesive, or by heat and pressure. The filament is embedded into the paper by pressure applied by rolls. The filament may be imprinted with printed matter for visual confirmation of document authenticity. The filament may include any combination of security features, such as reflective filaments, fluorescent filaments, and high tensile strength filaments.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: October 31, 2000
    Assignee: The Standard Register Company
    Inventors: David Ernest Washburn, Rajendra Mehta, Harry Allen Seifert
  • Security paper having an embedded and deformed security thread and a process for making the security paper
    Patent number: 5961152
    Abstract: Security paper, security documents made from the security paper, and processes for making the security paper, are provided. A filament is bonded and embedded into paper which has previously been manufactured. The filament is bonded to the paper by an adhesive, or by heat and pressure. The filament is embedded into the paper by pressure applied by rolls. The filament may be imprinted with printed matter for visual confirmation of document authenticity. The filament may include any combination of security features, such as reflective filaments, fluorescent filaments, and high tensile strength filaments.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: October 5, 1999
    Assignee: The Standard Register Company
    Inventors: David Ernest Washburn, Rajendra Mehta, Harry Allen Seifert