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Optical Fiber Manufacturing Apparatus And Optical Fiber Manufacturing Method
Abstract: An optical fiber manufacturing apparatus including: a heating furnace in which an optical fiber is formed by melt-drawing an optical fiber preform; a sealing mechanism which is provided on an opening portion located at an upstream of the heating furnace and seals the heating furnace with an inert gas; a first pipe which is connected to the heating furnace and introduces the gas into the heating furnace; a second pipe which is connected to a lowermost compartment closest to the heating furnace among the compartments and introduces the gas into the lowermost compartment; and a gas flow rate control unit which controls a total sum of a flow rate of a gas supplied from the first pipe into the heating furnace and a flow rate of a gas supplied from the second pipe into the lowermost compartment to be substantially constant.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
20 April 2011
Publication Number
41/2012
Publication Type
INA
Invention Field
CHEMICAL
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2017-04-18
Renewal Date
Applicants
FUJIKURA LTD.
5-1, KIBA 1-CHOME, KOHTOH-KU, TOKYO, JAPAN
Inventors
1. KENJI OKADA
C/O FUJIKURA LTD., SAKURA WORKS, 1440, MUTSUZAKI, SAKURA-SHI, CHIBA-KEN
Specification
as attached in pdf
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 1365-CHE-2011 POWER OF ATTORNEY 20-04-2011.pdf | 2011-04-20 |
| 1 | 1365-CHE-2011-RELEVANT DOCUMENTS [16-09-2023(online)].pdf | 2023-09-16 |
| 2 | 1365-CHE-2011 FORM-5 20-04-2011.pdf | 2011-04-20 |
| 2 | 1365-CHE-2011-RELEVANT DOCUMENTS [23-09-2022(online)].pdf | 2022-09-23 |
| 3 | 1365-CHE-2011-RELEVANT DOCUMENTS [27-07-2021(online)].pdf | 2021-07-27 |
| 3 | 1365-CHE-2011 FORM-3 20-04-2011.pdf | 2011-04-20 |
| 4 | 1365-CHE-2011-RELEVANT DOCUMENTS [04-03-2020(online)].pdf | 2020-03-04 |
| 4 | 1365-CHE-2011 FORM-18 20-04-2011.pdf | 2011-04-20 |
| 5 | 1365-CHE-2011-RELEVANT DOCUMENTS [07-03-2019(online)].pdf | 2019-03-07 |
| 5 | 1365-CHE-2011 FORM-1 20-04-2011.pdf | 2011-04-20 |
| 6 | 1365-CHE-2011-RELEVANT DOCUMENTS [27-02-2018(online)].pdf | 2018-02-27 |
| 6 | 1365-CHE-2011 CORRESPONDENCE OTHERS 20-04-2011.pdf | 2011-04-20 |
| 7 | Abstract_Granted 282587_18-04-2017.pdf | 2017-04-18 |
| 7 | 1365-CHE-2011 ABSTRACT 20-04-2011.pdf | 2011-04-20 |
| 8 | Claims_Granted 282587_18-04-2017.pdf | 2017-04-18 |
| 8 | 1365-CHE-2011 FORM-2 20-04-2011.pdf | 2011-04-20 |
| 9 | 1365-CHE-2011 DRAWINGS 20-04-2011.pdf | 2011-04-20 |
| 9 | Description_Granted 282587_18-04-2017.pdf | 2017-04-18 |
| 10 | 1365-CHE-2011 DESCRIPTION(COMPLETE) 20-04-2011.pdf | 2011-04-20 |
| 10 | Drawings_Granted 282587_18-04-2017.pdf | 2017-04-18 |
| 11 | 1365-CHE-2011 CLAIMS 20-04-2011.pdf | 2011-04-20 |
| 11 | Marked Copy_Granted 282587_18-04-2017.pdf | 2017-04-18 |
| 12 | 1365-che-2011 ENGLISH TRANSLATION 24-06-2011.pdf | 2011-06-24 |
| 12 | Abstract [31-03-2017(online)].pdf | 2017-03-31 |
| 13 | 1365-CHE-2011 CORRESPONDENCE OTHERS 24-06-2011.pdf | 2011-06-24 |
| 13 | Claims [31-03-2017(online)].pdf | 2017-03-31 |
| 14 | 1365-CHE-2011 FORM-3 10-10-2011.pdf | 2011-10-10 |
| 14 | Correspondence [31-03-2017(online)].pdf | 2017-03-31 |
| 15 | 1365-CHE-2011 CORRESPONDENCE OTHERS 10-10-2011.pdf | 2011-10-10 |
| 15 | Description(Complete) [31-03-2017(online)].pdf | 2017-03-31 |
| 16 | 1365-CHE-2011 FORM-3 05-12-2011.pdf | 2011-12-05 |
| 16 | Description(Complete) [31-03-2017(online)].pdf_524.pdf | 2017-03-31 |
| 17 | Drawing [31-03-2017(online)].pdf | 2017-03-31 |
| 17 | 1365-CHE-2011 CORRESPONDENCE OTHERS 05-12-2011.pdf | 2011-12-05 |
| 18 | abstract1365-CHE-2011.jpg | 2012-07-06 |
| 18 | Examination Report Reply Recieved [31-03-2017(online)].pdf | 2017-03-31 |
| 19 | 1365-CHE-2011-NATIONAL BIODIVERSITY AUTHORITY-010916.pdf | 2016-09-07 |
| 19 | Other Document [31-03-2017(online)].pdf | 2017-03-31 |
| 20 | 1365-CHE-2011-Correspondence-National Biodiversity Authority-010916.pdf | 2016-09-07 |
| 20 | 1365-CHE-2011-FER.pdf | 2016-12-28 |
| 21 | 1365-CHE-2011-Correspondence-National Biodiversity Authority-010916.pdf | 2016-09-07 |
| 21 | 1365-CHE-2011-FER.pdf | 2016-12-28 |
| 22 | 1365-CHE-2011-NATIONAL BIODIVERSITY AUTHORITY-010916.pdf | 2016-09-07 |
| 22 | Other Document [31-03-2017(online)].pdf | 2017-03-31 |
| 23 | abstract1365-CHE-2011.jpg | 2012-07-06 |
| 23 | Examination Report Reply Recieved [31-03-2017(online)].pdf | 2017-03-31 |
| 24 | Drawing [31-03-2017(online)].pdf | 2017-03-31 |
| 24 | 1365-CHE-2011 CORRESPONDENCE OTHERS 05-12-2011.pdf | 2011-12-05 |
| 25 | 1365-CHE-2011 FORM-3 05-12-2011.pdf | 2011-12-05 |
| 25 | Description(Complete) [31-03-2017(online)].pdf_524.pdf | 2017-03-31 |
| 26 | 1365-CHE-2011 CORRESPONDENCE OTHERS 10-10-2011.pdf | 2011-10-10 |
| 26 | Description(Complete) [31-03-2017(online)].pdf | 2017-03-31 |
| 27 | 1365-CHE-2011 FORM-3 10-10-2011.pdf | 2011-10-10 |
| 27 | Correspondence [31-03-2017(online)].pdf | 2017-03-31 |
| 28 | 1365-CHE-2011 CORRESPONDENCE OTHERS 24-06-2011.pdf | 2011-06-24 |
| 28 | Claims [31-03-2017(online)].pdf | 2017-03-31 |
| 29 | 1365-che-2011 ENGLISH TRANSLATION 24-06-2011.pdf | 2011-06-24 |
| 29 | Abstract [31-03-2017(online)].pdf | 2017-03-31 |
| 30 | 1365-CHE-2011 CLAIMS 20-04-2011.pdf | 2011-04-20 |
| 30 | Marked Copy_Granted 282587_18-04-2017.pdf | 2017-04-18 |
| 31 | 1365-CHE-2011 DESCRIPTION(COMPLETE) 20-04-2011.pdf | 2011-04-20 |
| 31 | Drawings_Granted 282587_18-04-2017.pdf | 2017-04-18 |
| 32 | 1365-CHE-2011 DRAWINGS 20-04-2011.pdf | 2011-04-20 |
| 32 | Description_Granted 282587_18-04-2017.pdf | 2017-04-18 |
| 33 | 1365-CHE-2011 FORM-2 20-04-2011.pdf | 2011-04-20 |
| 33 | Claims_Granted 282587_18-04-2017.pdf | 2017-04-18 |
| 34 | 1365-CHE-2011 ABSTRACT 20-04-2011.pdf | 2011-04-20 |
| 34 | Abstract_Granted 282587_18-04-2017.pdf | 2017-04-18 |
| 35 | 1365-CHE-2011 CORRESPONDENCE OTHERS 20-04-2011.pdf | 2011-04-20 |
| 35 | 1365-CHE-2011-RELEVANT DOCUMENTS [27-02-2018(online)].pdf | 2018-02-27 |
| 36 | 1365-CHE-2011 FORM-1 20-04-2011.pdf | 2011-04-20 |
| 36 | 1365-CHE-2011-RELEVANT DOCUMENTS [07-03-2019(online)].pdf | 2019-03-07 |
| 37 | 1365-CHE-2011-RELEVANT DOCUMENTS [04-03-2020(online)].pdf | 2020-03-04 |
| 37 | 1365-CHE-2011 FORM-18 20-04-2011.pdf | 2011-04-20 |
| 38 | 1365-CHE-2011-RELEVANT DOCUMENTS [27-07-2021(online)].pdf | 2021-07-27 |
| 38 | 1365-CHE-2011 FORM-3 20-04-2011.pdf | 2011-04-20 |
| 39 | 1365-CHE-2011-RELEVANT DOCUMENTS [23-09-2022(online)].pdf | 2022-09-23 |
| 39 | 1365-CHE-2011 FORM-5 20-04-2011.pdf | 2011-04-20 |
| 40 | 1365-CHE-2011-RELEVANT DOCUMENTS [16-09-2023(online)].pdf | 2023-09-16 |
| 40 | 1365-CHE-2011 POWER OF ATTORNEY 20-04-2011.pdf | 2011-04-20 |
Search Strategy
| 1 | SearchEngine_28-11-2016.pdf |