1. CPC Sections
  2. CPC Section G
  3. CPC Class G04
  4. CPC Subclass G04R
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Version: 2024.01
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CPC
COOPERATIVE PATENT CLASSIFICATION
G04R
RADIO-CONTROLLED TIME-PIECES [2013-01]
G04R 20/00
Setting the time according to the time information carried or implied by the radio signal [2013-01]
G04R 20/02
.
the radio signal being sent by a satellite, e.g. GPS [2013-01]
G04R 20/04
. .
Tuning or receiving; Circuits therefor [2013-01]
G04R 20/06
. .
Decoding time data; Circuits therefor [2013-01]
G04R 20/08
.
the radio signal being broadcast from a long-wave call sign, e.g. DCF77, JJY40, JJY60, MSF60 or WWVB [2013-01]
G04R 20/10
. .
Tuning or receiving; Circuits therefor [2013-01]
G04R 20/12
. .
Decoding time data; Circuits therefor [2013-01]
G04R 20/14
.
the radio signal being a telecommunication standard signal, e.g. GSM [2024-01]
G04R 20/16
. .
Tuning or receiving; Circuits therefor [2013-01]
G04R 20/18
. .
Decoding time data; Circuits therefor [2013-01]
G04R 20/20
.
the radio signal being an AM/FM standard signal, e.g. RDS [2013-01]
G04R 20/22
. .
Tuning or receiving; Circuits therefor [2013-01]
G04R 20/24
. .
Decoding time data; Circuits therefor [2013-01]
G04R 20/26
.
the radio signal being a near-field communication signal [2013-01]
G04R 20/28
. .
Tuning or receiving; Circuits therefor [2013-01]
G04R 20/30
. .
Decoding time data; Circuits therefor [2013-01]
G04R 40/00
Correcting the clock frequency [2013-01]
G04R 40/02
.
by phase locking [2013-01]
G04R 40/04
.
by detecting the radio signal frequency [2013-01]
G04R 40/06
.
by computing the time value implied by the radio signal [2013-01]
G04R 60/00
Constructional details [2013-01]
G04R 60/02
.
Antennas also serving as components of clocks or watches, e.g. motor coils [2013-01]
G04R 60/04
.
Antennas attached to or integrated in watch bracelets [2013-01]
G04R 60/06
.
Antennas attached to or integrated in clock or watch bodies [2013-01]
G04R 60/08
. .
inside bezels [2013-01]
G04R 60/10
. .
inside cases [2013-01]
G04R 60/12
. . .
inside metal cases [2013-01]
G04R 60/14
.
specific to electromechanical timepieces, e.g. moving parts thereof [2013-01]