Global Patent Index - EP 1098348 A2

EP 1098348 A2 2001-05-09 - Color cathode ray tube and manufacture for contrast improvement

Title (en)

Color cathode ray tube and manufacture for contrast improvement

Title (de)

Farbkathodenstrahlröhre und Verfahren zur Kontrastverbesserung

Title (fr)

Tube cathodique couleur et procédé d'amélioration du contraste

Publication

EP 1098348 A2 (EN)

Application

EP 00403032 A

Priority

IT MI992325 A

Abstract (en)

The invention relates to a method of manufacturing a colour cathode-ray tube, in which a graphite coating (22) of variable thickness is interposed between the glass faceplate (2) of the tube and the phosphors (25, 26, 27) intended to reproduce a colour image. The purpose of the coating (22) is to reduce the transmission of the glass, of which the faceplate is composed, to a defined value. <IMAGE>

IPC 1-7 (main, further and additional classification)

H01J 9/227; H01J 29/32

IPC 8 full level (invention and additional information)

H01J 9/24 (2006.01); H01J 9/227 (2006.01); H01J 29/32 (2006.01)

CPC (invention and additional information)

H01J 29/327 (2013.01); H01J 9/2278 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

EP 1098348 A2 20010509; EP 1098348 A3 20020717; CN 1169183 C 20040929; CN 1295335 A 20010516; IT 1313925 B1 20020926; IT MI992325 A1 20010507; IT MI992325 D0 19991105; JP 2001167712 A 20010622; KR 20010051401 A 20010625; MX PA00010841 A 20030606; MY 136611 A 20081031; TW 501367 B 20020901

INPADOC legal status


2007-10-24 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20070501

2004-11-24 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20041007

2003-04-09 [AKX] PAYMENT OF DESIGNATION FEES

- Designated State(s): DE FR GB IT

2003-03-19 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20030110

2002-07-17 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2002-07-17 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI

2002-07-17 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7H 01J 9/227 A, 7H 01J 29/32 B, 7H 01J 29/18 B

2001-05-09 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-05-09 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI