Patent ID: 11932038
Assignee: nan
Field: Computer technology (Electrical engineering)
Classification: CPC B  G  H | IPC B  G  H

Claim 10:
11. The authentication mark system of claim 10 wherein the microscopic ink drops include:
a first set of microscopic ink drops deposited on the object, the first set of microscopic ink drops being a first color;
a second set of microscopic ink drops deposited on the object, the second set of microscopic ink drops being a second color;
a third set of microscopic ink drops deposited on the object, the third set of microscopic ink drops being a third color; and
a fourth set of microscopic ink drops deposited on the object, the fourth set of microscopic ink drops being a fourth color;, wherein the first, second, third and fourth sets of microscopic ink drops define the pattern of ink on the object.