(19)
(11) EP 0 885 176 A1

(12)

(43) Date of publication:
23.12.1998 Bulletin 1998/52

(21) Application number: 97907924.0

(22) Date of filing: 28.02.1997
(51) International Patent Classification (IPC): 
C03B 20/ 00( . )
C03B 32/ 00( . )
C03B 19/ 14( . )
C03C 21/ 00( . )
(86) International application number:
PCT/US1997/003100
(87) International publication number:
WO 1997/032821 (12.09.1997 Gazette 1997/39)
(84) Designated Contracting States:
DE FR GB NL

(30) Priority: 05.03.1996 US 19960012881P
06.03.1996 US 19960012941P

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

(72) Inventors:
  • BORRELLI, Nicholas, F.
    Elmira, NY 14905 (US)
  • SEMPOLINSKI, Daniel, R.
    Painted Post, NY 14870 (US)
  • SEWARD, Thomas, P., III
    Elmira, NY 14901 (US)
  • SMITH, Charlene
    Corning, NY 14830 (US)

(74) Representative: Marchant, James Ian, et al 
Elkington and Fife, Prospect House, 8 Pembroke Road
Sevenoaks, Kent TN13 1XR
Sevenoaks, Kent TN13 1XR (GB)

   


(54) METHOD OF INCREASING THE INITIAL TRANSMITTANCE OF OPTICAL GLASS