CPC Subgroup Additional Only
H04M 2203/45 related to voicemail messaging
Full Title
Aspects of automatic or semi-automatic exchanges > related to voicemail messaging
10 direct subcodes
Child Classifications
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- H04M 2203/4509 Unified messaging with single point of access to voicemail and other mail or messaging systems
- H04M 2203/4518 Attachments to voicemail
- H04M 2203/4527 Voicemail attached to other kind of message
- H04M 2203/4536 Voicemail combined with text-based messaging
- H04M 2203/4545 Message forwarding
- H04M 2203/4554 Sender-side editing
- H04M 2203/4563 Voicemail monitoring during recording
- H04M 2203/4572 Voicemail RSS
- H04M 2203/4581 Sending message identifiers instead of whole messages
- H04M 2203/459 Calling party redirected to message centre on called party request
Top Applicants
Top 10 applicants by patent filingsfor class H04, 2013–2023, worldwide · Source: EPO PATSTAT
- HUAWEI TECHNOLOGIES COMPANY CN 101,476
- QUALCOMM US 101,139
- SAMSUNG ELECTRONICS COMPANY KR 96,655
- TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 57,744
- LG ELECTRONICS KR 55,253
- HUAWEI TECHNOLOGIES COMPANY 54,181
- SONY CORPORATION JP 35,309
- ZTE CORPORATION CN 32,950
- INTEL CORPORATION US 27,533
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION CN 27,498