Patents by Inventor Eric S. Ringan

Eric S. Ringan 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).

  • Metal powder pigment
    Patent number: 5593773
    Abstract: The invention provides a metal powder pigment. In one aspect it comprises polished atomized pigment particles of aluminum or an aluminum alloy which are facetted and have a median particle size of from 1 to 300 .mu.m and an aspect ratio of from 5/1 to 1.1/1. The polished atomized metal powder particles have an increased reflectivity with respect to unpolished atomized metal powder particles of at least 10%. The pigment of the invention can be used to provide novel visual effects in single and multilayer coating systems.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: January 14, 1997
    Assignee: Silberline Limited
    Inventors: Colin F. McKay, Angela McKay, Eric S. Ringan