The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 2005
Filed:
Feb. 27, 2002
Applicant:
Nazir Khan, Nottingham, GB;
Inventor:
Nazir Khan, Nottingham, GB;
Assignee:
Sherwood Technology, Inc., , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K026/00 ;
U.S. Cl.
CPC ...
Abstract
A method for making an object, wherein the object comprises a material including a functional group and a metal compound or acid that causes an elimination reaction on irradiation with a laser, to form a reaction product of contrasting colour, comprises directing a laser beam on to the areas of the object to be marked. For example, by using a carbohydrate and a metal salt, effective marking can be achieved on the coating of a pill or other edible material.