IP Library Granted Patent US 7,985,590
Granted Patent B2
US 7,985,590 · App. 12/855,853 · Granted Jul 26, 2011

Method and system for detection using nanodot taggants

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 7,985,590
App. No.
12/855,853
Granted
Jul 26, 2011
Kind
B2
Abstract

Described herein are methods directed to the use of the nanodot taggants in detection and/or simulation scenarios. The nanodot taggants are based on quantum dots and may be engineered so as to have particular emission and or absorbance spectral characteristics. The nanodots are extremely small, i.e., on the order of nanometers in size, and thus do not, in some cases, behave as particles, but rather are able to be carried along and through structures like a gas.

Claims (7)

1. A process for identifying a target object comprising:

placing a first panel containing a first nanocomponent taggant in a first liquid to a target object, wherein the first nanocomponent taggant emits at least a first predefined spectral frequency in response to interrogation;

transmitting a first radiation at the target object in order to induce emission of the at least a first predefined spectral frequency from the first nanocomponent taggant in the first panel;

detecting the at least a first predefined spectral frequency emitted from the target object in order to identify the target object; and

mechanically changing a spectral signature of the target object by replacing the first liquid containing the first nanocomponent taggant with a second liquid containing a second nanocomponent taggant that emits a second predefined spectral frequency in response to interrogation by second radiation.

2. The process according to claim 1 , wherein the first liquid is replaced at a predetermined interval.

3. The process according to claim 1 , wherein the first liquid is replaced at a random interval.

Assignments (5)
RELEASE OF SECURITY INTEREST Recorded Jan 17, 2020
From: CITIBANK, N.A., AS COLLATERAL AGENT
To: LEIDOS, INC.
Reel/Frame 051632/0742 →
RELEASE OF SECURITY INTEREST Recorded Jan 17, 2020
From: CITIBANK, N.A., AS COLLATERAL AGENT
To: LEIDOS, INC.
Reel/Frame 051632/0819 →
SECURITY INTEREST Recorded Aug 25, 2016
From: LEIDOS, INC.
To: CITIBANK, N.A.
Reel/Frame 039809/0801 →
SECURITY INTEREST Recorded Aug 25, 2016
From: LEIDOS, INC.
To: CITIBANK, N.A.
Reel/Frame 039818/0272 →
CHANGE OF NAME Recorded Apr 15, 2014
From: SCIENCE APPLICATIONS INTERNATIONAL CORPORATION
To: LEIDOS, INC.
Reel/Frame 032688/0756 →