The ranked field covers 100 assignees, with the leader holding 131 of the 1,626 records in scope and the fifth- and tenth-ranked assignees holding 44 and 24 respectively. The top 5 combined account for 21.2% of all records and the top 10 for 30.0%, so leadership is meaningful but not dominant. The remaining roughly 70% of records are spread across a long tail of smaller and single-filing entrants, which is typical for a field built on mechanical installation methods rather than one core chemistry or material.

Complete-year data shows filings falling from 76 in 2021 to 37 in 2024, a 51% decline, after an earlier peak of 78 filings in 2018. However, 2025 and later years in this dataset are still incomplete because publication typically lags filing by about 18 months, so the apparent drop in the very latest years should not be read as the field’s current trajectory. The more reliable read is a mid-decade cooling from a 2018 high rather than an ongoing collapse.

By IPC subclass share of the 1,626 records, G02B (optical elements & systems) leads at 33.3%, closely followed by H02G (installing power & signal cables) at 31.1%. H01B (cables, conductors & insulators), F16L (pipe fittings) and E21B (earth and rock drilling) each cover roughly 8-10% of records. Because a single record can carry multiple IPC classes, these figures overlap and add to more than 100% of the record base, reflecting how installation-method claims are often bundled with the cable or fibre product itself.