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Patents Grants
last 30 patents
Information
Patent Grant
Method of expanding the capacity of switching elements, and switchi...
Patent number
5,946,314
Issue date
Aug 31, 1999
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Luigi Licciardi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of and device for measuring return losses in optical fiber c...
Patent number
5,864,400
Issue date
Jan 26, 1999
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Lorenzo Bottazzi
G01 - MEASURING TESTING
Information
Patent Grant
Method and device for the generation of ultrashort optical pulses
Patent number
5,852,700
Issue date
Dec 22, 1998
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Renato Caponi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Underground tubular ducts for telecommunications networks
Patent number
5,789,708
Issue date
Aug 4, 1998
CSELT-Centro Studi E Laboratori Telecommunicazioni S.p.A.
Giuseppe Cocito
G02 - OPTICS
Information
Patent Grant
Optical amplifier
Patent number
5,673,141
Issue date
Sep 30, 1997
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Piero Gambini
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of and device for measuring the Kerr non-linearity coefficie...
Patent number
5,619,321
Issue date
Apr 8, 1997
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Massimo Artiglia
G01 - MEASURING TESTING
Information
Patent Grant
High-speed CMOS driver for optical sources
Patent number
5,589,786
Issue date
Dec 31, 1996
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Valter Bella
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Optical demultiplexing system
Patent number
5,416,625
Issue date
May 16, 1995
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Alessandro Cavaciuti
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
High bit rate cell switching element in CMOS technology
Patent number
5,369,635
Issue date
Nov 29, 1994
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Marco Gandini
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
High-resolution spectroscopy system
Patent number
5,305,077
Issue date
Apr 19, 1994
CSELT-Centro Studi E Laboratori Telecommunicazioni S.p.A.
Giorgio Grego
G01 - MEASURING TESTING
Information
Patent Grant
Gain-coupled distributed-feedback semiconductor laser
Patent number
5,276,702
Issue date
Jan 4, 1994
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Marina Meliga
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Coherent optical fiber communications system using polarization mod...
Patent number
5,257,126
Issue date
Oct 26, 1993
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Riccardo Calvani
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical spectroscopy system
Patent number
5,144,374
Issue date
Sep 1, 1992
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Giorgio Grego
G01 - MEASURING TESTING
Information
Patent Grant
Coherent optical-fiber communication system using polarization dive...
Patent number
5,127,066
Issue date
Jun 30, 1992
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Pierluigi Poggiolini
G02 - OPTICS
Information
Patent Grant
Coupled quantum-well electro-optical modulator
Patent number
5,105,301
Issue date
Apr 14, 1992
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Domenico Campi
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Method of and device for moving image contour recognition
Patent number
5,103,488
Issue date
Apr 7, 1992
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Roberto Gemello
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Device for the correlation between optical beams
Patent number
5,044,726
Issue date
Sep 3, 1991
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Giorgio Grego
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Dielectric-loaded cavity resonator
Patent number
5,008,640
Issue date
Apr 16, 1991
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Luciano Accatino
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of characterizing bistable semiconductor lasers
Patent number
5,007,735
Issue date
Apr 16, 1991
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Riccardo Calvani
G02 - OPTICS
Information
Patent Grant
Node for a fast packet-switching network in optical-electrical tech...
Patent number
4,939,721
Issue date
Jul 3, 1990
CSELT- Centro Studi e Laboratori Telecommunicazioni SpA
Alfredo De Bosio
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Apparatus for reducing optical-fiber attenuation
Patent number
4,929,264
Issue date
May 29, 1990
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Pietro Di Vita
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method of manufacturing optical fibers with elimination of paraxial...
Patent number
4,921,516
Issue date
May 1, 1990
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Giacomo Roba
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Heterodyne michelson interferometer for polarization measurements
Patent number
4,832,492
Issue date
May 23, 1989
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Riccardo Calvani
G01 - MEASURING TESTING
Information
Patent Grant
Process and apparatus for producing optical-fiber preforms for mid-...
Patent number
4,728,350
Issue date
Mar 1, 1988
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Giuseppe Cocito
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Apparatus for reducing volume and surface defects in silica optical...
Patent number
4,702,759
Issue date
Oct 27, 1987
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Giacomo Roba
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Variable-band distributed switching node with dynamic hybrid-frame...
Patent number
4,611,321
Issue date
Sep 9, 1986
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Luciano Gabrielli
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Low-dissipation output stage for binary transmitters
Patent number
4,593,211
Issue date
Jun 3, 1986
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Piero Belforte
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Modular self-routing PCM switching network for distributed-control...
Patent number
4,543,653
Issue date
Sep 24, 1985
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Piero Belforte
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Variable-band switching system for voice and data communication
Patent number
4,538,263
Issue date
Aug 27, 1985
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Luciano Gabrielli
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of and circuitry for detecting, at a telephone exchange, the...
Patent number
4,528,425
Issue date
Jul 9, 1985
CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
Flavio Melindo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
74728290 - LAP
Serial number
74728290
Registration number
2047200
Filing date
Sep 8, 1995
CSELT-CENTRO STUDI E LABORATORI TELECOMMUNICAZIONI S.P.A.
42 - Scientific and technological services and research and design relating thereto
Information
Trademark
74531978 - ROBUR
Serial number
74531978
Registration number
1930973
Filing date
Jun 1, 1994
CSELT-CENTRO STUDI E LABORATORI TELECOMMUNICAZIONI S.P.A.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
74532123 - FLEXUS
Serial number
74532123
Filing date
Jun 1, 1994
CSELT-CENTRO STUDI E LABORATORI TELECOMMUNICAZIONI S.P.A.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
74462810 - ELOQUENS
Serial number
74462810
Registration number
1889682
Filing date
Nov 24, 1993
CSELT-CENTRO STUDI E LABORATORI TELECOMMUNICAZIONI S.P.A.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73331431 - CSELT
Serial number
73331431
Registration number
1241476
Filing date
Oct 6, 1981
CSELT Centro Studi e Laboratori Telecommunicazioni, S.p.A.
38 - Telecommunications
Information
Trademark
73331425 - CSELT
Serial number
73331425
Registration number
1240949
Filing date
Oct 6, 1981
CSELT Centro Studi e Laboratori Telecommunicazioni S.p.A.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments