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:
Apr. 21, 1998
Filed:
Sep. 30, 1996
Applicant:
Inventors:
Narsingh B Singh, Export, PA (US);
William D Partlow, Export, PA (US);
Steven Strauch, Ellicott City, MD (US);
Albert M Stewart, Pittsburgh, PA (US);
John F Jackovitz, Monroeville, PA (US);
David W Coffey, Columbia, MD (US);
Robert Mazelsky, Monroeville, PA (US);
James DB. Smith, Monroeville, PA (US);
Assignee:
Northrop Grumman Corporation, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ; F21V / ;
U.S. Cl.
CPC ...
359350 ; 250372 ; 252588 ;
Abstract
Crystals formed of a solid-solution of Ni(BF.sub.4).sub.2 6H.sub.2 O provide very good materials for filtering ultraviolet light and will not deteriorate in temperatures as high as 110.degree. C. They are particularly useful in sensing devices which seek to identify the presence of ultraviolet light in the UV missile warning band.