Patents Examined by Tim S. Saunders
  • Microemulsion ink jet ink composition
    Patent number: 5047084
    Abstract: An ink jet ink in the form of a microemulsion of an organic vehicle phase having a colorant dispersed therein and an aqueous phase containing a surfactant, the vehicle phase preferably being liquid at 70.degree. C. and solid at 20.degree. C.
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: September 10, 1991
    Assignee: Hewlett-Packard Company
    Inventors: Miller Robert J., Young S. You