PlainPatent

CPC technology class · G09

G09C - Ciphering OR Deciphering Apparatus FOR Cryptographic OR O…

Ciphering or deciphering apparatus for cryptographic or other purposes involving the need for secrecy. 2,112 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

2,112
US patents granted
G09
Parent CPC class
20
Active assignees
+14%
5-yr velocity

The verdict

Ciphering OR Deciphering Apparatus FOR Cryptographic OR O… ranks #364 of 670 CPC technology areas - 2,112 US patents granted since 2015, with filing up 14% over five years.

#364
of 670 CPC technology areas
2,112
US patents granted, 2015–2025
Intel
leading assignee (141)
+14%
filing velocity, last 5 yrs
Top assignee: Intel Corporation (141 patents)

CPC subclass G09C - CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY - covers 2,112 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class G09 (EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS). See our CPC classification guide for how the system works.

The competitive landscape in G09C is shaped by 20 distinct companies actively filing in this space. Intel Corporation leads with 141 patents, followed by ICTK Holdings Co., Ltd. at 32 grants and Stmicroelectronics (rousset) SAS at 24.

Filing activity in G09C is up 14% over the past five years versus 2015-2019, a relatively steady filing pace. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is G09C innovation accelerating?

US utility-patent grants per year in G09C, 2015–2025 - recent five years are up 14% versus 2015–2019.

50100150200250300 20152016201720182019202020212022202320242025 98

Who leads G09C?

The 12 most active assignees in CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY - wider bars mean more grants

patents

What this shows Intel is the most active filer in G09C, holding 141 of the 2,112 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.

Source USPTO PatentsView, granted utility patents As of 2015–2025 grant years
View data table
Top patent holders in CPC subclass G09C
Rank Company Patents in G09C
#1 Nippon Telegraph AND Telephone Corporation 74
#2 ICTK Holdings Co., Ltd. 32
#3 Stmicroelectronics (rousset) SAS 24
#4 Cryptography Research, Inc. 21
#5 Altera Corporation 20
#6 Alibaba Group Holding Limited 15
#7 Lexmark International, Inc. 13
#8 Data I/o Corporation 12
#9 Enveil, Inc. 12
#10 Eshard 12
#11 Macronix International Co., Ltd. 10
#12 Equity Shift, Inc. 10
#13 Advanced New Technologies Co., Ltd. 9
#14 Mcafee, Llc 9
#15 Copilot Ventures Fund III Llc 9
#16 Cord3 Innovation Inc. 9
#17 Visa International Service Association 8
#18 CA, Inc. 8
#19 Alpvision S.a. 8
#20 Ballet Global Inc. 8

About This Class

CPC subclass G09C belongs to class G09.

2,112 patents were granted in this class between 2015 and 2025.

20 companies actively patent in this space.

Classification System

Cooperative Patent Classification (CPC) is a hierarchical patent classification system used by the USPTO and EPO.

← All Technology Classes Technology Rankings →

Footprint here vs. claim strategy

Each dot is a leading G09C assignee, placed by how many patents it holds in this class (horizontal) against its company-wide average claims per patent (vertical) - a read on whether the class is led by broad-but-shallow filers or focused deep-claim players.

Top 14 G09C assignees by class footprint. Bubble size = patents in G09C. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 G09C assignees by class footprint. Bubble size = patents in G09C. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 51015202530 020406080 Patents in G09C Avg claims / patent (company-wide) Nippon Telegraph And…Ictk HoldingsStmicroelectronics (R…Cryptography ResearchAlteraAlibaba Group HoldingLexmark InternationalData I/OEnveilEshardMacronix InternationalEquity ShiftAdvanced NewMcafee
Top 14 G09C assignees by class footprint. Bubble size = patents in G09C. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class G09C?
CPC subclass G09C covers CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY. It belongs to CPC class G09 (EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS), with 2,112 US utility patents granted since 2015.
How many patents have been filed in G09C?
2,112 US utility patents were granted in CPC subclass G09C between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in G09C?
Intel Corporation leads G09C with 141 patents, making it the most active assignee in this technology area.
How is patent data for G09C collected?
Patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office. It covers all US granted utility patents and assigns CPC codes based on the technology described in each patent.
What is the difference between CPC class and subclass?
A CPC class (e.g., G09) is a broad technology category. Subclasses like G09C provide finer granularity within that category. PlainPatent organizes data at the subclass level (4-character codes) for the most useful view of technology domains.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.