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. 23, 1995
Filed:
Sep. 23, 1993
Applicant:
Inventors:
Robert S Blackwood, Lubbock, TX (US);
David R Vaughn, Lubbock, TX (US);
Billy R Masten, Shallowater, TX (US);
Timothy B Vaughn, Lubbock, TX (US);
Assignee:
FSI International, Inc., Chaska, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
250561 ; 414936 ;
Abstract
A device for detecting and locating substrates in a cassette including a homogeneous columnar radiation source adjacent to and radiating the edges of the substrates, rod-shaped directional lenses transmitting and replicating the substrate edges in their field of view and directing the transmitted reflected radiation and image of the field of view onto sensing pixels activated to produce indications of the presence and location of the substrates in the cassette.
Published as: