H04T INDEXING SCHEME ASSOCIATED WITH CLASS H04, RELATING TO STANDARDS FOR ELECTRIC COMMUNICATION TECHNIQUE
Description
H04T serves as an indexing and organizational framework for standards-related content within the broader field of electric communication techniques (Class H04). This subclass does not itself cover substantive technical inventions but rather provides a structured reference system for accessing standardized specifications, protocols, and regulatory frameworks applicable to telecommunications, radio communication, and related electronic communication systems. It functions as a navigational aid for patent examiners and information specialists to locate standards documentation and cross-reference materials that support classification decisions across H04's numerous technical divisions.
Filing statistics
CPC subclass H04T recorded 75 patent applications worldwide between 2013 and 2023. Annual filings declined from 24 in 2013 to 1 in 2023 (-96%). The most active applicants in class H04 are HUAWEI TECHNOLOGIES COMPANY (101,476 applications), QUALCOMM (101,139 applications) and SAMSUNG ELECTRONICS COMPANY (96,655 applications).
Source: EPO PATSTAT, worldwide filings
3 direct subcodes
Child Classifications
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- H04T 2001/00 Standards for wireless communication networks
- H04T 2012/00 Standards related to data switching networks in general
- H04T 2029/00 Standards related to data transmission protocols not covered by any of the codes H04T2001/00 - H04T2012/00
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