The phrase "a proprietary computer" is correct and usable in written English.
You can use it to describe a computer system or device that is owned by a specific company and is not available for public use or modification.
Example: "The software developed for our project can only run on a proprietary computer designed by our company."
Alternatives: "a private computer" or "an exclusive computer".
S.A.C. had a proprietary computer system, known as Panorama, which allowed employees to monitor the company's holdings in real time.
Her staff had made plans to show the press a proprietary computer algorithm called Ada, and to explain that the algorithm had showed how to win the election.
Mr. Leuthold and Mr. Engel allocate the fund's assets by using a proprietary computer model that is run weekly and has more than 170 variables.
OPT is a proprietary computer software package, which accepts data regarding production requirements and manufacturing facilities normally available from the plant records.
MBNA executives worried that Bank of America would arrogantly overrun competitive advantages they had worked hard to build, like a proprietary computer system that was unlike the outsourced technology used by their new owners.
Many mutual funds that make their trades based on the recommendations of a proprietary computer model, known as quantitative or quant funds, have outperformed their benchmarks in the last three years.
The firm's flagship product, AHL, a fund that uses a proprietary computer-driven strategy, lost nearly 6 percent last year.
The London-based company, one of the world's largest publicly traded hedge funds, said Douglas Greenig would become chief risk officer at the AHL fund, which uses a proprietary computer-driven strategy.
Pointing to the company's flagship fund, AHL, which uses a proprietary computer-driven strategy and lost nearly 6 percent last year, the analysts wrote: "Our upgrade to 'buy' is based on valuation, and because we believe AHL fund performance cannot get sustainably worse from here".
In order to answer the research questions posed above, a proprietary computer-based simulation model was designed.
The assessors read the radiographs remotely using work stations and a proprietary Computer-Assisted Masked Reading system (CAMR™) (Bio-Imaging Technologies, Inc., now part of BioClinica, Newtown, PA, USA).
