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. 21, 2002
Filed:
Jun. 13, 2000
Applicant:
Inventors:
Rashid Mavliev, Chicago, IL (US);
Hwa-Chi Wang, Naperville, IL (US);
Assignee:
American Air Liquide, Inc., Fremont, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 1/00 ; G01N 2/100 ;
U.S. Cl.
CPC ...
G01N 1/00 ; G01N 2/100 ;
Abstract
A method and apparatus for quickly detecting the surface characteristics of a surface, such as features, anomalies or contaminants are disclosed. The method and apparatus use heterogeneous condensation of a vapor on a surface and evaporation to reveal the surface characteristics of the surface and thereby enable the detection of such features.