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:
Jun. 19, 2001
Filed:
Jul. 03, 1996
Oleg Popov, Needham, MA (US);
Jakob Maya, Brookline, MA (US);
Matsushita Electric Works Research & Development Laboratories Inc, Woburn, MA (US);
Abstract
An electrodeless inductively-coupled fluorescent lamp which operates at radio frequencies and contains an induction coil (,) which is inserted in a reentrant cavity (,) of the envelope (,) and is spread along the length of the reentrant cavity (,). The coil (,) is disposed within a cylinder (,) of thermally conductive metal. The use of the spread coil provides for reduction of starting and operation voltages of the lamp and results in lowering of the energy of ions bombarding the inner surface of the envelope (,) and the cavity (,) and therefore improves lamp maintenance and increases lamp life.