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. 02, 2009
Filed:
May. 17, 2006
Jason J. LI, Boxford, MA (US);
Alexander N. Kasak, Marcellus, NY (US);
Heinz W. Sell, Cushing, ME (US);
Alan L. Lenef, Belmont, MA (US);
Raymond T. Fleming, Lexington, KY (US);
Richard C. Laird, El Paso, TX (US);
Jason J. Li, Boxford, MA (US);
Alexander N. Kasak, Marcellus, NY (US);
Heinz W. Sell, Cushing, ME (US);
Alan L. Lenef, Belmont, MA (US);
Raymond T. Fleming, Lexington, KY (US);
Richard C. Laird, El Paso, TX (US);
Osram Sylvania Inc., Danvers, MA (US);
Abstract
A base-up incandescent lamp () includes a coiled-coil filament () that has a primary wire () and a secondary wire (), the primary wire () comprising an overwind that overlies the secondary wire () and provides a lower filament temperature and, therefore, less filament sag and a concomitant longer lamp life.