ClassID:

87220

C03B37/01248 - CPC Classification

Classification description:

Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags; Manufacture of glass fibres or filaments; Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments; Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing by collapsing without drawing

Recent Application in this class:
#1
20260084997
2026-03-26

METHOD FOR PRODUCING OPTICAL FIBER PREFORM, AND OPTICAL FIBER PREFORM

#2
20250178946
2025-06-05

METHOD OF FORMING A MULTICORE PREFORM AND FIBER

#3
20240101464
2024-03-28

METHOD FOR PRODUCING A PREFORM FOR AN ANTI-RESONANT HOLLOW-CORE FIBER HAVING NESTED CAPILLARIES; PREFORM AND INTERMEDIATE PRODUCT

#4
20230266523
2023-08-24

Optical fiber

#5
20230061100
2023-03-02

OPTICAL FIBRE PREFORM AND METHOD OF MANUFACTURING THEREOF

#6
20220306516
2022-09-29

Vacuum-based methods of forming a cane-based optical fiber preform and methods of forming an optical fiber using same

#7
20220286204
2022-09-08

Upward collapse process and apparatus for making glass preforms

#8
20200277219
2020-09-03

Vacuum-based methods of forming a cane-based optical fiber preform and methods of forming an optical fiber using same

#9
20200262736
2020-08-20

Method of producing optical fiber preform and optical fiber

#10
20200180995
2020-06-11

Method for producing a glass-fibre preform with a core of a polygonal core cross section

#11
20190359516
2019-11-28

Device, system, and method for forming a core-rod for optical fibers

#12
20190270662
2019-09-05

Method of manufacturing optical fiber preform and optical fiber preform

#13
20190016630
2019-01-17

Optical fiber preform

#14
20180305237
2018-10-25

Method for efficiently preparing doped optical fibre preform and doped optical fibre preform

#15
20180145752
2018-05-24

Upward collapse process and apparatus for making glass preforms

#16
20180072608
2018-03-15

Method for inserting a core rod into an outer cladding tube with spacer

#17
20170137316
2017-05-18

Method of producing optical fiber preform and optical fiber

#18
20170129800
2017-05-11

Method of making optical fibers in a reducing atmosphere

#19
20170101339
2017-04-13

Method of assembling optical fiber preforms

#20
20170101335
2017-04-13

Method to prevent cracks in optical fiber preforms

#21
20170101334
2017-04-13

METHOD OF MANUFACTURING OPTICAL FIBER PREFORM AND OPTICAL FIBER PREFORM

#22
20170096362
2017-04-06

Apparatus and method for producing core rod of optical fiber

#23
20170015581
2017-01-19

Method for preparing a primary preform by etching and collapsing a deposited tube

#24
20160257602
2016-09-08

USING SILICON TETRAFLOURIDE DURING POWDER-IN-TUBE (PIT) PROCESS

#25
20160257600
2016-09-08

MANUFACTURING IRREGULAR-SHAPED PREFORMS

#26
20160229733
2016-08-11

Preform manufacturing method

#27
20160009589
2016-01-14

Method of making optical fibers in a reducing atmosphere

#28
20150370008
2015-12-24

Optical-fiber preform and method for manufacturing optical-fiber preform

#29
20150336841
2015-11-26

Method for manufacturing an optical preform

#30
20150239768
2015-08-27

Apparatus and method for producing core rod of optical fiber

#31
20140270667
2014-09-18

Glass buffers

#32
20140174134
2014-06-26

System and method for fabricating optical fiber preform and optical fiber

#33
20130291604
2013-11-07

Method of manufacturing an optical fibre glass preform

#34
20130272670
2013-10-17

Low macrobending loss single-mode optical fibre

#35
20120318025
2012-12-20

DEVICE AND METHOD FOR MANUFACTURING AN OPTICAL PREFORM

#36
20120141080
2012-06-07

Hexagonal tube stacking method for the fabrication of hollow core photonic band gap fibers and preforms

#37
20100287993
2010-11-18

MCVD optical fiber method with partial removal of substrate tube

#38
20080247721
2008-10-09

Photonic band gap fiber and method of producing the same

#39
20080170830
2008-07-17

PHOTONIC BAND GAP FIBER AND METHOD OF PRODUCING THE SAME

#40
20080107385
2008-05-08

Optical fiber and manufacturing method thereof

#41
20080013904
2008-01-17

Optical fiber, manufacturing method of the same, and optical amplifier

#42
20070220924
2007-09-27

Method for fabricating an optical fiber, preform for fabricating an optical fiber, optical fiber and apparatus

#43
20070206911
2007-09-06

Gold Metal Cylinder Fiber

#44
20060213231
2006-09-28

Optical fiber manufacture

#45
20060123851
2006-06-15

Method of producing a glass preform

#46
20060093293
2006-05-04

Optical fibers

#47
20060010920
2006-01-19

Method for forming high-density multicore phase-locked fiber laser array

#48
20050252247
2005-11-17

Method and apparatus for overcladding glass rod