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:
Feb. 25, 1992
Filed:
Mar. 23, 1990
Applicant:
Inventor:
Ingo Duenisch, Taunusstein, DE;
Assignee:
Heimann GmbH, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313636 ; 313623 ;
Abstract
A flashbulb having an increased energy density. The composition of the hard glass of the flashbulb is selected such that the components thereof that volatilize easily during a discharge of the flashbulb are at least partially emitter substances that reduce the work function at the cathode member.