Triplex redundancy refers to an architecture with three parallel processing or actuation channels, where a majority-voting scheme resolves disagreement and isolates a faulted channel. In this dataset it appears alongside dissimilar redundancy, where the three channels additionally use different hardware or software to reduce the chance of a common-mode failure taking out all channels at once. The representative record in this landscape, US7877627B1, is a direct example: three primary and three redundant processor modules with 2-out-of-3 output voting.

The ranking returned by this dataset covers 15 companies across 31 records, led by a single assignee with 6 records — nearly triple the count held at fifth place, which sits at 2. The top five combined account for 21 records, or 67.7% of all records in scope, and the top ten account for 27, or 87.1%. That is a steep concentration curve: a small group of aerospace and industrial-control filers holds most of the documented claim space, with the remaining ranked assignees each holding a single record.

The trend data shows 10 filings in 2017 against zero in the most recent complete year, but that decline should be read cautiously. Patent publication typically lags the actual filing date by around 18 months, so the last one to two years in any dataset are always undercounted relative to what has actually been filed. A genuine slowdown cannot be confirmed until enough time has passed for those recent filings to publish.