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:
Jan. 26, 1999
Filed:
Aug. 27, 1997
Applicant:
Inventors:
Waite R Warren, Jr, Raleigh, NC (US);
John T Cox, Durham, NC (US);
Louis W Nicholls, Gilbert, AZ (US);
Assignee:
Mitsubishi Electric America, Inc., Cypress, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
702135 ; 702 99 ; 374-9 ; 374124 ; 374126 ;
Abstract
A position detection system is provided which, without physical contact, by the use of detected infrared energy emissions determines whether there is correct placement of one or more small objects, e.g., lead frames, on the lower half of a two-part die mold in a semiconductor component manufacturing process. This takes place prior to injection of an initially molten material that solidifies and encapsulates the small objects upon curing and cooling.