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:
Feb. 14, 1995
Filed:
Nov. 25, 1992
Applicant:
Inventors:
Nicholas C Allen, Bedford, MA (US);
Sergey V Broude, Newton Centre, MA (US);
Eric T Chase, Nashua, NH (US);
Pascal Miller, North Chelmsford, MA (US);
Jay L Ormsby, Salem, NH (US);
Bruno Rostaing, Medford, MA (US);
Lloyd P Quackenbos, Newburyport, MA (US);
Assignee:
QC Optics, Inc., Burlington, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
250572 ; 356237 ;
Abstract
A surface pit and mound detection and discrimination system including a device for scanning a beam of radiation over a surface, and a mechanism for detecting a local slope on the surface for differentiating between whether the beam of radiation is scanning a pit or a mound on the surface.