Material coding using lasers

Details Material coding using lasers Material coding using lasers

1997-08-11

2001-11-13

Lee, Michael G. (Department: 2876)

Registers

Coded record sensors

Particular sensor structure

C235S462110, C430S292000

Reexamination Certificate

active

06315202

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a system of coding materials using a laser.
Automatic article identification has a number of advantages. For example, certain articles of clothing have unique value based on their brand name. Two substantially identical clothing items may have very different values based on the name. Moreover, the relative costs of such articles may be more pronounced in some markets than others. This is led to a practice whereby manyt manufacturers sell materials for use in only one country.
An item made by a company for use in one country which is sold in another country is often called grey-market. Because of the different pricing structures in place, there is an enormous possibility for profits when this is done.
Even more profitable, moreover, is the possibility of outright counterfeiting. Counterfeit articles can be very cheaply made, and often difficult to detect. The counterfeit articles cause signficant problems. Their quality cannot be controlled, and may weaken the public's confidence in the product. They also can represent significant lost profits to the actual authorized manfacturer.
Various techniques of product marking are known.
SUMMARY OF THE INVENTION
In consideration of the above, the present invention describes a system of marking identification codes on specific materials. The identification codes are preferably encoded using an encryption system such as a digital signature which makes it effectively impossible to counterfeit the information. Moreover, any attempt to alter the signature can be readily detected. The codes can also be automatically read, and used to detect various information about the material being marked.
Different codes are described in these applications. These different codes are usable in different applications.


REFERENCES:
patent: 3920124 (1975-11-01), Patterson
patent: 4766301 (1988-08-01), Evers
patent: 4861620 (1989-08-01), Azuma et al.
patent: 5171650 (1992-12-01), Ellis et al.
patent: 5175774 (1992-12-01), Truax et al.
patent: 5206492 (1993-04-01), Clement et al.
patent: 5247154 (1993-09-01), Ahmed
patent: 5567207 (1996-10-01), Lockman et al.
patent: 5585616 (1996-12-01), Roxby et al.
patent: 5742036 (1998-04-01), Schramm, Jr. et al.
patent: 5854148 (1998-12-01), Asada et al.
patent: 5895073 (1999-04-01), Moore
patent: 5990444 (1999-11-01), Costin
patent: 63216790 (1997-03-01), None

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