I'll verify Rosemount Inc.'s profile with web search.
Rosemount Inc. is a U.S. operating subsidiary of Emerson Electric Co. (NYSE: EMR). It was founded in 1956 as Rosemount Engineering by Frank Werner, Robert Keppel and Vernon Heath in the Minneapolis–St. Paul area, and has been owned by Emerson since 1976. The Rosemount business is headquartered in Shakopee, Minnesota (with a long-standing legal-entity address in Chanhassen, MN) and operates within Emerson's automation/measurement instrumentation segment. Wikipedia lists roughly 8,500 employees and about $2.7 billion in revenue for the Rosemount business (older DBpedia data shows ~6,500 employees and ~$2.0 billion); these figures appear to be outdated, and Emerson does not separately report Rosemount, so current headcount and revenue are unverified.
Products / operations. Rosemount designs and manufactures process measurement instrumentation: pressure and differential-pressure transmitters, temperature transmitters, level and radar/tank-gauging devices, DP flow meters (including Annubar), and wireless (WirelessHART) field instruments, plus analytical instrumentation for gas and liquid analysis, combustion measurement, and flame and gas detection. It sits alongside sister Emerson brands such as Micro Motion, Flexim, Roxar and Plantweb Insight, serving oil and gas, refining, chemical, power, water, life sciences, metals and mining customers. This is a genuine manufacturing business, not a licensing shell.
Patent-litigation posture. The tracked data shows Rosemount with one case as defendant and zero as plaintiff — the classic profile of an operating company targeted by a patent assertion entity rather than an active two-way litigant.
Notable case. In SIPCO, LLC et al. v. Emerson Electric Co. et al (No. 6:15-cv-00907, E.D. Tex., Tyler Division, filed Oct. 16, 2015), SIPCO — an entity the Stanford NPE database classifies as "individual-inventor-started" — asserted a portfolio of wireless mesh-network monitoring and control patents against Emerson and co-defendants including BP America, accusing Rosemount wireless transmitters, Smart Wireless Gateways and AMS Trex devices. Emerson petitioned for IPR (appealed in Emerson Electric Co. v. SIPCO, LLC, Fed. Cir. No. 19-1490) and pursued a parallel declaratory-judgment action in the N.D. Ga. The case reflects Rosemount's exposure to wireless-instrumentation patents and the plaintiff-friendly East Texas venue.