Inventor · disambiguated record
Hideo Hirasawa
Also filed as: HIRASAWA HIDEO
33 granted patents·9 pending applications·376 citations·filing 1993–2006
97Inventor score
Top patents by PatentIndex Score
42 records- 0192US6386001B1Optical fiber manufacture method including elongating a preform in a vertical direction and a horizontal directionSHINETSU CHEMICAL CO·Filed 1999·Granted May 14, 2002·44 cites·8 claims
- 0290US6742363B1Straightening a glass rod for use in making an optical fiber preformSHINETSU CHEMICAL CO·Filed 2000·Granted Jun 1, 2004·22 cites·11 claims
- 0390US5958102AApparatus and method for making an optical fiber preform using a correction passSHINETSU CHEMICAL CO·Filed 1997·Granted Sep 28, 1999·48 cites·10 claims
- 0489US7752869B2Optical fiber preform, method for manufacturing thereof, and optical fiber obtained by drawing thereofSHINETSU CHEMICAL CO·Filed 2005·Granted Jul 13, 2010·9 cites·11 claims
- 0588US6178778B1Method of stretching an optical fiber preform with monitoring the diameter at two locationsSHINETSU CHEMICAL CO·Filed 1997·Granted Jan 30, 2001·51 cites·1 claims
- 0684US6546759B1Glass base material manufacturing apparatus with super imposed back-and-forth burner movementSHINETSU CHEMICAL CO·Filed 2000·Granted Apr 15, 2003·18 cites·28 claims
- 0783US6532776B1Method and apparatus for fusing an optical fiber preformSHINETSU CHEMICAL CO·Filed 2000·Granted Mar 18, 2003·10 cites·8 claims
- 0880US6134922AMethod for drawing a glass ingotSHINETSU CHEMICAL CO·Filed 1998·Granted Oct 24, 2000·27 cites·7 claims
- 0979US6779362B2Method of making an optical fiber preform where a second elongation is based on a mark on a glass rodSHINETSU CHEMICAL CO·Filed 2002·Granted Aug 24, 2004·7 cites·8 claims
- 1077US6131414AMethod for making a preform for optical fibers by drawing a mother ingotSHINETSU CHEMICAL CO·Filed 1998·Granted Oct 17, 2000·25 cites·9 claims
- 1176US6442978B1Apparatus for sintering a porous glass base material and a method thereforSHINETSU CHEMICAL CO·Filed 2000·Granted Sep 3, 2002·9 cites·20 claims
- 1269US6467311B1Double flame polishing method for fiber preformsSHINETSU CHEMICAL CO·Filed 2000·Granted Oct 22, 2002·5 cites·16 claims
- 1368US7082791B2Apparatus for fabricating soot preform for optical fiberSHINETSU CHEMICAL CO·Filed 2003·Granted Aug 1, 2006·4 cites·5 claims
- 1466US6698240B1Apparatus for manufacturing glass base material and a method for manufacturing glass base materialSHINETSU CHEMICAL CO·Filed 2000·Granted Mar 2, 2004·4 cites·36 claims
- 1561US7213416B2Glass base material producing deviceSHINETSU CHEMICAL CO·Filed 2001·Granted May 8, 2007·2 cites·34 claims
- 1660US7823418B2Method of making glass base materialSHINETSU CHEMICAL CO·Filed 2006·Granted Nov 2, 2010·0 cites·11 claims
- 1760US6848276B2Optical fiber manufacture method, preform manufacture method, and preform manufacture apparatusSHINETSU CHEMICAL CO·Filed 2002·Granted Feb 1, 2005·1 cites·7 claims
- 1859US6640589B1Glass base material drawing apparatus and method for drawing glass base materialSHINETSU CHEMICAL CO·Filed 2000·Granted Nov 4, 2003·2 cites·38 claims
- 1959US6220057B1Apparatus and method for drawing a glass ingotSHINETSU CHEMICAL CO·Filed 1998·Granted Apr 24, 2001·14 cites·5 claims
- 2057US7093412B1Glass base material packing methodSHINETSU CHEMICAL CO·Filed 2000·Granted Aug 22, 2006·3 cites·9 claims
- 2157US6988382B2Method for manufacturing glass-base-material by measuring the weight of the materialSHINETSU CHEMICAL CO·Filed 2004·Granted Jan 24, 2006·1 cites·7 claims
- 2257US2005132753A1Optical fiber manufacture method, preform manufacture method, and preform manufacture apparatusFiled 2005·Application pending·0 cites
- 2356US7055345B2Glass base material manufacturing apparatus and glass base material manufacturing methodTOBISAKA YUUJI·Filed 2003·Granted Jun 6, 2006·3 cites·22 claims
- 2455US5423898AMethod of lowering and raising a optical fiber preform in a sintering furnaceSHINETSU CHEMICAL CO·Filed 1994·Granted Jun 13, 1995·14 cites·1 claims
- 2554US6672112B2OVD apparatus including air-regulating structureSHINETSU CHEMICAL CO·Filed 2003·Granted Jan 6, 2004·1 cites·21 claims
- 2653US6735986B2Apparatus for preventing redeposition of silica during flame severingSHINETSU CHEMICAL CO·Filed 2003·Granted May 18, 2004·0 cites·2 claims
- 2752US6145344AMethod for the preparation of a porous silica glass preform for optical fibersSHINETSU CHEMICAL CO·Filed 1994·Granted Nov 14, 2000·13 cites·2 claims
- 2852US2004177652A1Glass rod manufacturing method and glass rod manufacturing apparatusSHINETSU CHEMICAL CO·Filed 2004·Application pending·0 cites
- 2952US2004028362A1Optical fiber preform, method for manufacturing thereof, and optical fiber obtained by drawing thereofSHINETSU CHEMICAL CO·Filed 2003·Application pending·0 cites
- 3051US2005147367A1Method for manufacturing base material for optical fiber, apparatus therefor, and base material manufactured by the sameFiled 2004·Application pending·0 cites
- 3149US2002100295A1Optical fiber base material ingot and method for producing the sameSHINETSU CHEMICAL CO·Filed 2001·Application pending·0 cites
- 3249US2001054302A1Optical fiber base material ingot and method for producing the sameSHINETSU CHEMICAL CO·Filed 2001·Application pending·0 cites
- 3348US6941772B2Apparatus and method for manufacturing glass-base-materialSHINETSU CHEMICAL CO·Filed 2002·Granted Sep 13, 2005·0 cites·21 claims
- 3448US6306500B1Porous optical fiber base materials, optical fiber base materials and methods for producing themSHINETSU CHEMICAL CO·Filed 1999·Granted Oct 23, 2001·9 cites·22 claims
- 3548US5366531APreparation of a preform of optical fibersSHINETSU CHEMICAL CO·Filed 1993·Granted Nov 22, 1994·10 cites·4 claims
- 3647US2002043079A1Apparatus for fabricating soot preform for optical fiberFiled 2001·Application pending·0 cites
- 3747US2003221460A1Lower-loss base material for optical fibres and manufacturing method thereofSHINETSU CHEMICAL CO·Filed 2003·Application pending·0 cites
- 3845US5683486AMethod of forming a fiber preform to minimize shifts of the zero-dispersion wavelengthSHINETSU CHEMICAL CO·Filed 1994·Granted Nov 4, 1997·9 cites·1 claims
- 3940US2004200241A1Glass base material for optical fiber and manufacturing method thereof where absorption by hydroxyl groups is reducedSHINETSU CHEMICAL CO·Filed 2004·Application pending·0 cites
- 4039US6467310B2Method for producing optical fiber base material ingot by grinding while core portion central axis is brought into line with rotational axis of grinding machineSHINETSU CHEMICAL CO·Filed 1999·Granted Oct 22, 2002·4 cites·2 claims
- 4135US5425795AMethod for pulling-up a porous silica glass preformSHINETSU CHEMICAL CO·Filed 1994·Granted Jun 20, 1995·5 cites·1 claims
- 4233US6354112B2Method of depositing glass soot with controlling reaction chamber humidity to prevent accumulation of excess sootSHINETSU CHEMICAL CO·Filed 1998·Granted Mar 12, 2002·2 cites·1 claims
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