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:
Aug. 27, 1991
Filed:
Jun. 11, 1990
James D Nolan, Spencer, NC (US);
Other;
Abstract
Composite safety coating and fluorescent lamp which lamp upon being energized causes the intermediate portion of the glass envelope to be heated to a relatively low temperature and causes the end portions of the glass envelope adjacent the end caps to be heated to a relatively high temperature, the composite safety coating includes a first substantially light transparent coating nondegradeable to the relatively low temperature surrounding and secured to the entire glass envelope and portions of the end caps, and second and third substantially light transparent coatings nondegradeable to the relatively high temperature surrounding the portions of the first coating surrounding the portions of the glass envelope heated to the relatively high temperature and portions of the end caps, the second and third coatings preventing degradation of the portions of the first coating surrounding the portions of the glass envelope heated to the relatively high temperature; and manufacturing process therefor.