(19)
(11) EP 1 351 897 A1

(12)

(43) Date of publication:
15.10.2003 Bulletin 2003/42

(21) Application number: 01987069.0

(22) Date of filing: 16.11.2001
(51) International Patent Classification (IPC)7C03B 37/018, C03B 37/07
(86) International application number:
PCT/US0143/889
(87) International publication number:
WO 0205/1762 (04.07.2002 Gazette 2002/27)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 22.12.2000 US 258061 P

(71) Applicant: CORNING INCORPORATED
Corning, N.Y. 14831 (US)

(72) Inventors:
  • JAMES, Tiffany L
    Wilmington, NC 28412 (US)
  • LACY, Claud L
    Painted Post, NY 14870 (US)
  • MATTHEWS, Hazel B
    Wilmington, NC 28411 (US)
  • ONUH, Chukwuemeka B
    Wilmington, NC 28409 (US)
  • SCHIEFELBEIN, Susan L
    Ithaca, NY 14830 (US)

(74) Representative: Poole, Michael John 
Corning Communications Ltd.,Patent and Licensing Dpt.,Quantum House,Maylands Avenue
Hemel Hempstead, Herts. HP2 7DE
Hemel Hempstead, Herts. HP2 7DE (GB)

   


(54) TREATING SOOT PREFORMS WITH A REDUCING AGENT