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Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised
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CPC
COOPERATIVE PATENT CLASSIFICATION
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RADIO-CONTROLLED TIME-PIECES [2013‑01]
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Setting the time according to the time information carried or implied by the radio signal [2013‑01]
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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]
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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]
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G04R 20/14
.
the radio signal being a telecommunication standard signal, e.g. GSM, UMTS or 3G [2013‑01]
G04R 20/16
. .
Tuning or receiving; Circuits therefor [2013‑01]
G04R 20/18
. .
Decoding time data; Circuits therefor [2013‑01]
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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]
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G04R 20/26
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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]
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G04R 40/00
Correcting the clock frequency [2013‑01]
G04R 40/02
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by phase locking [2013‑01]
G04R 40/04
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by detecting the radio signal frequency [2013‑01]
G04R 40/06
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by computing the time value implied by the radio signal [2013‑01]
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Constructional details [2013‑01]
G04R 60/02
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Antennas also serving as components of clocks or watches, e.g. motor coils [2013‑01]
G04R 60/04
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Antennas attached to or integrated in watch bracelets [2013‑01]
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G04R 60/06
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Antennas attached to or integrated in clock or watch bodies [2013‑01]
G04R 60/08
. .
inside bezels [2013‑01]
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G04R 60/10
. .
inside cases [2013‑01]
G04R 60/12
. . .
inside metal cases [2013‑01]
G04R 60/14
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specific to electromechanical timepieces, e.g. moving parts thereof [2013‑01]
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013