Patent · US Active

Method and system for color changing contact lens solution

US8785360B1 · kind B1 · utility

1Cited by

1References

15Claims

0Family size

Inventors

Ian Herrick · New York, US
Heather Sheardown · Nobleton, CA
Lina Liu · Beijing, CN
Laura Anne Wells · Toronto, CA
Lyndon William James Jones · Waterloo, CA

Key dates

Filing date	Aug 14, 2011
Grant date	Jul 22, 2014
Priority date	—
Expiry date	Oct 20, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC11D3/40
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A used contact lens is placed in a contact lens receptacle. An aqueous composition is added to the contact lens receptacle, the aqueous composition capable of changing from a first appearance to a second appearance in response to an interaction with the used contact lens after a predetermined period of time.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.