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:
Jul. 12, 1983
Filed:
Apr. 08, 1981
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313489 ; 313112 ;
Abstract
High pressure mercury vapor discharge lamp having an outer bulb which is ferably spherical and which provides light having a color similar to that of an incandescent lamp. The inner surface of the outer bulb is provided with a red-emitting phosphor coating. The outer surface of the outer bulb is provided with a filter coating whose transmittance at 400 nm is about 40%, at 500 nm is about 60%, and at 600 nm is about 70%.