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:
Oct. 09, 2001
Filed:
Sep. 08, 1999
Michael D. Frederickson, Indianapolis, IN (US);
Martin A. Seitz, Brookfield, WI (US);
Richard W. Hirthe, Milwaukee, WI (US);
Mohammad N. Amin, Milwaukee, WI (US);
Anthony L. Delieto, Camby, IN (US);
Alex E. Cragoe, Indianapolis, IN (US);
Jeff K. Latham, New Castle, IN (US);
Patrick D. Riggs, Greenwood, IN (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
This invention relates to an on-line statistical process control device for solder paste and residues. The invention consists of electronics hardware, software, and probing systems. The electrical hardware of the invention provides voltage and current measurements of solder paste materials, the software of the invention controls the hardware, provides real-time complex, non-linear least squares curve fitting for equivalent circuit analysis, data storage and retrieval of circuit parameters and behavior, and statistical process control tracking and charting. The probing systems of the invention allows for 2, 3, and 4 probe surface and bulk measurements of the solder paste and residues.