Inventor · disambiguated record
Toshio Danzuka
Also filed as: DANZUKA TOSHIO
30 granted patents·1 pending application·553 citations·filing 1985–2001
97Inventor score
Top patents by PatentIndex Score
31 records- 0192US6324871B1Process for producing optical fiber preformSUMITOMO ELECTRIC INDUSTRIES·Filed 2000·Granted Dec 4, 2001·26 cites·2 claims
- 0291US5983673ASilica glass article and manufacturing process thereforSUMITOMO ELECTRIC INDUSTRIES·Filed 1998·Granted Nov 16, 1999·54 cites·11 claims
- 0386US4668263AMethod for producing glass preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1985·Granted May 26, 1987·62 cites·6 claims
- 0485US5755849AMethod for elongating glass preformSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted May 26, 1998·39 cites·6 claims
- 0580US4793842AMethod for producing glass preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1987·Granted Dec 27, 1988·27 cites·5 claims
- 0676US5788734AMethod for drawing glass preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1997·Granted Aug 4, 1998·24 cites·6 claims
- 0775US5676725AMethod of manufacturing single-mode optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted Oct 14, 1997·24 cites·4 claims
- 0872US5674306AMethod and apparatus for drawing glass preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Oct 7, 1997·20 cites·8 claims
- 0972US5470369AProcess for consolidation of porous preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted Nov 28, 1995·22 cites·16 claims
- 1068US6333283B1Silica glass article and manufacturing process thereforSUMITOMO ELECTRIC INDUSTRIES·Filed 1999·Granted Dec 25, 2001·25 cites·5 claims
- 1167US6709997B2Silica glass article and manufacturing process thereforSUMITOMO ELECTRIC INDUSTRIES·Filed 2001·Granted Mar 23, 2004·9 cites·21 claims
- 1267US5330548AMethod for producing glass preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Jul 19, 1994·18 cites·6 claims
- 1363US5685889AMethod for flame abrasion of glass preformSUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted Nov 11, 1997·16 cites·2 claims
- 1463US4978378AMethod for producing glass preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1989·Granted Dec 18, 1990·21 cites·4 claims
- 1562US4938789ARaw material supplying device and processSUMITOMO ELECTRIC INDUSTRIES·Filed 1988·Granted Jul 3, 1990·20 cites·4 claims
- 1662US4765815AMethod for producing glass preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1987·Granted Aug 23, 1988·13 cites·2 claims
- 1761US5296011AMethod of manufacturing hermetic coating optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Mar 22, 1994·17 cites·30 claims
- 1860US6535679B2Optical fiber and method of manufacturing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1998·Granted Mar 18, 2003·23 cites·18 claims
- 1960US5513983AApparatus for vitrifying soot preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted May 7, 1996·16 cites·36 claims
- 2052US5238479AMethod for producing porous glass preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Aug 24, 1993·11 cites·3 claims
- 2150US5693115AProcess for production of glass preform for optical fiber including consolidating in a furnace with a temperature gradientSUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted Dec 2, 1997·10 cites·10 claims
- 2250US5338327AMethod of flame abrasion of glass preformSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Aug 16, 1994·10 cites·10 claims
- 2346US5585137AApparatus and method of manufacturing fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Dec 17, 1996·11 cites·12 claims
- 2445US5236482AMethod for producing glass preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Aug 17, 1993·6 cites·3 claims
- 2541US5250097AMethod for producing glass soot depositSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Oct 5, 1993·5 cites·4 claims
- 2640US5624474AOptical fiber preform manufacturing apparatus which measures a vertical load with three cellsSUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted Apr 29, 1997·6 cites·10 claims
- 2738US5352261AApparatus for the production of hermetically coated optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1993·Granted Oct 4, 1994·6 cites·9 claims
- 2838US2002000104A1Methods of making preform and optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2001·Application pending·0 cites
- 2937US4781740AMethod for producing glass preform for optical fiberSUMIMOTO ELECTRIC IND LTD·Filed 1987·Granted Nov 1, 1988·4 cites·8 claims
- 3035US5207813AMethod for producing glass articleSUMITOMO ELECTRIC INDUSTRIES·Filed 1991·Granted May 4, 1993·4 cites·8 claims
- 3134US5338328AApparatus of manufacturing hermetic coating optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1993·Granted Aug 16, 1994·4 cites·19 claims
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