Patent · US Expired

Process for coating an exterior portion of a lamp

US5945177A · kind A · utility

7Cited by

1References

13Claims

0Family size

Assignee

Schott Glaswerke · DE

Inventors

Hrabanus Hack · Mainz, DE
Torsten Holdmann · Witzenhausen, DE
Volker Paquet · Mainz, DE
Johannes Segner · Stromberg, DE

Key dates

Filing date	Dec 16, 1997
Grant date	Aug 31, 1999
Priority date	—
Expiry date	Dec 16, 2017

Classification

Technology area (CPC H)Electricity
CPC primaryH01J9/20
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A process for coating an exterior of a lamp is disclosed, which comprises performing the coating in a microwave reactor by a microwave plasma CVD process and coupling microwave radiation into the microwave reactor with a microwave power greater than or equal to a power threshold value at which a plasma with reduced microwave permeability is ignited in the microwave reactor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.