Securing authentication flows using a decentralized identifier
US-2024314128-A1 · Sep 19, 2024 · US
Encryption being effected by mechanical apparatus, e.g. rotating cams, switches, keytape punchers
Encryption being effected by mechanical apparatus, e.g. rotating cams, switches, keytape punchers · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04L9/38 |
| Official title | Encryption being effected by mechanical apparatus, e.g. rotating cams, switches, keytape punchers |
| Display label | Encryption being effected by mechanical apparatus, e.g. rotating cams, switches, keytape punchers |
| Total patents | 69 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 6 |
| 2017 | 5 |
| 2018 | 6 |
| 2019 | 7 |
| 2020 | 8 |
| 2021 | 7 |
| 2022 | 4 |
| 2023 | 8 |
| 2024 | 7 |
| 2025 | 8 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Retroactively adding encryption and/or authentication levels to a blockchain
US-12095926-B2 · Sep 17, 2024 · US
Method and apparatus for blockchain community governance, device and storage medium
US-12069175-B2 · Aug 20, 2024 · US
Blockchain Rideshare Data Aggregator Solution
US-2024271949-A1 · Aug 15, 2024 · US
Securing authentication flows using a decentralized identifier
US-12021868-B2 · Jun 25, 2024 · US
Neural network processing method and server and electrical device therefor
US-12021986-B2 · Jun 25, 2024 · US
Blockchain rideshare data aggregator solution
US-12007240-B1 · Jun 11, 2024 · US
Fluid meter communicating with an electromechanical valve
US-11804972-B2 · Oct 31, 2023 · US
Securing authentication flows using a decentralized identifier
US-2023319039-A1 · Oct 5, 2023 · US
Retroactively adding encryption and/or authentication levels to a blockchain
US-2023308285-A1 · Sep 28, 2023 · US
Blockchain Rideshare Data Aggregator Solution
US-2023296390-A1 · Sep 21, 2023 · US
Systems and methods for azimuthal multiplexing three-dimensional diffractive optics
US-11716209-B2 · Aug 1, 2023 · US
Neural network processing method and server and electrical device therefor
US-2023208639-A1 · Jun 29, 2023 · US
Energy-efficient cryptocurrency mining hardware accelerator with spatially shared message scheduler
US-2023195511-A1 · Jun 22, 2023 · US
Blockchain based vehicle control
US-11601304-B2 · Mar 7, 2023 · US
Unauthorized connection detecting device
US-2022396219-A1 · Dec 15, 2022 · US
Apparatus and methods for authenticating cyber secure control system configurations using distributed ledgers
US-11456891-B2 · Sep 27, 2022 · US
Method and apparatus for blockchain community governance, device and storage medium
US-2022224536-A1 · Jul 14, 2022 · US
Secure engine communication
US-11290301-B2 · Mar 29, 2022 · US
Acoustic detector for solid medium with wireless transmission
US-11212121-B2 · Dec 28, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04L9/38?
- CPC H04L9/38 is the Cooperative Patent Classification code for “Encryption being effected by mechanical apparatus, e.g. rotating cams, switches, keytape punchers.”
- How many patents are filed under CPC H04L9/38 (Encryption being effected by mechanical apparatus, e.g. rotating cams, switches, keytape punchers)?
- Our database includes 69 publications tagged with this CPC code.
- Is patent activity under CPC H04L9/38 growing?
- Publication counts under this code: 7 in 2024 vs 8 in 2025 (latest complete years).