ClassID:

87215

C03B37/01234 - 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; Removal of preform material to form longitudinal grooves, e.g. by chamfering

Recent Application in this class:
#1
20230416139
2023-12-28

METHOD FOR PRODUCING A PREFORM FOR PRODUCING A MULTICORE FIBRE AND ALSO A PREFORM AND A MULTICORE FIBRE

#2
20220356108
2022-11-10

Methods for producing a hollow-core fiber and for producing a preform for a hollow-core fiber

#3
20220227658
2022-07-21

METHODS FOR PRODUCING A HOLLOW-CORE FIBER AND FOR PRODUCING A PREFORM FOR A HOLLOW-CORE FIBER

#4
20220227656
2022-07-21

Methods for producing a hollow-core fiber and for producing a preform for a hollow-core fiber

#5
20210198139
2021-07-01

Method for producing a preform for producing a multicore fibre and also a preform and a multicore fibre

#6
20200301059
2020-09-24

A CUTTING ELEMENT FOR USE IN A HAIR CUTTING DEVICE, AND A METHOD OF MANUFACTURING THE SAME

#7
20200180995
2020-06-11

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

#8
20170075147
2017-03-16

Polarization-maintaining optical fibre and preform and method for producing the same

#9
20160075590
2016-03-17

Production method of optical fiber preform, and production method of optical fiber

#10
20130074551
2013-03-28

METHOD OF MAKING MULTI-CORE OPTICAL FIBER AND METHOD OF MAKING MULTI-CORE OPTICAL FIBER CONNECTOR

#11
20130008210
2013-01-10

METHOD FOR MANUFACTURING A BIREFRINGENT MICROSTRUCTURED OPTICAL FIBER

#12
20110097048
2011-04-28

Techniques for manufacturing birefringent optical fiber

#13
20100326139
2010-12-30

Optical fiber preform manufacturing method

#14
20060130528
2006-06-22

Method of making a hole assisted fiber device and fiber preform

#15
20060088262
2006-04-27

Rare earth doped single polarization double clad optical fiber with plurality of air holes

#16
20060088261
2006-04-27

Rare earth doped single polarization double clad optical fiber and a method for making such fiber

#17
20060083471
2006-04-20

Single polarization and polarization maintaining optical fibers and system utilizing same

#18
20050008313
2005-01-13

Cladding-pumped optical fiber and methods for fabricating