Global Patent Index - EP 0464446 A3

EP 0464446 A3 19921021 - ELECTRIC LAMP HAVING A LIGHT REFLECTING LAYER

Title (en)

ELECTRIC LAMP HAVING A LIGHT REFLECTING LAYER

Publication

EP 0464446 A3 19921021 (DE)

Application

EP 91109916 A 19910617

Priority

DE 4020595 A 19900628

Abstract (en)

[origin: EP0464446A2] In order to avoid problematic process steps in the manufacture of reflector lamps, the production of the light-reflecting layer (6) is carried out by plasma-supported vacuum coating of the exterior bulb surface using, for example, titanium nitride, instead of by thermal vapour-deposition of the internal bulb surface using aluminium or aluminium-bronze. The light-reflecting layer (6) applied in this way has high adhesive strength and is very resistant to scratching and is also resistant to oxidation and moisture attack at an elevated temperature. <IMAGE>

IPC 1-7

H01J 61/35

IPC 8 full level

H01J 9/20 (2006.01); H01J 61/35 (2006.01); H01K 1/32 (2006.01)

CPC (source: EP)

H01J 9/20 (2013.01); H01J 61/35 (2013.01); H01K 1/325 (2013.01)

Citation (search report)

  • [X] PATENT ABSTRACTS OF JAPAN vol. 13, no. 259 (E-773)15 Juni 1989; & JP-A-1 054 663 (TOSHIBA CORP.) 2 März 1989
  • [X] PATENT ABSTRACTS OF JAPAN vol. 12, no. 447 (E-685)24. November 1988 & JP-A-63 174 262 ( NEC HOME ELECTRONICS LTD ) 18 Juli 1988
  • [X] PATENT ABSTRACTS OF JAPAN vol. 13, no. 396 (E-815)4. September 1989 & JP-A-1 143 130 ( USHIO INC ) 5 Juni 1989
  • [Y] PATENT ABSTRACTS OF JAPAN vol. 12, no. 406 (P-777)27. Oktober 1988 & JP-A-63 144 379 ( MINOLTA CAMERA CO LTD ) 16 Juni 1988
  • [Y] PATENT ABSTRACTS OF JAPAN vol. 14, no. 329 (P-1076)16. Juli 1990 & JP-A-2 109 003 ( KONIKA CORP ) 20 April 1990
  • [AD] VAKUUM IN DER PRAXIS Nr. 1, 1990, WEINHEIM, DE Seiten 16 - 20; G. KIENEL: 'Plasmagestützte Vakuumbeschichtungsverfahren Verfahrensvarianten und Entwicklungstendenzen'
  • [A] PATENT ABSTRACTS OF JAPAN vol. 13, no. 61 (C-567)10. Februar 1989 & JP-A-63 252 944 ( NIPPON SHEET GLASS CO LTD ) 20 Oktober 1988
  • [AP] PATENT ABSTRACTS OF JAPAN vol. 14, no. 550 (E-1009)6. Dezember 1990 & JP-A-2 237 108 ( SONY CORP ) 19 September 1990

Designated contracting state (EPC)

DE DK FR GB IT SE

DOCDB simple family (publication)

EP 0464446 A2 19920108; EP 0464446 A3 19921021; EP 0464446 B1 19961016; DE 4020595 A1 19920109; DE 59108277 D1 19961121; HU T57946 A 19911230

DOCDB simple family (application)

EP 91109916 A 19910617; DE 4020595 A 19900628; DE 59108277 T 19910617; HU 216891 A 19910627