The phrase "are increasingly useful" is correct and usable in written English.
You can use it to describe something that is becoming more beneficial or advantageous over time.
Example: "As technology advances, digital tools are increasingly useful for enhancing productivity in the workplace."
Alternatives: "are becoming more valuable" or "are progressively beneficial".
Radiotracers for imaging protein targets in the living human brain with positron emission tomography (PET) are increasingly useful in clinical research and in drug development.
Phylogenetic trees are increasingly useful in a broad array of biological studies as a basis for experimental design as well as the framework on which to generalize results.
On the contrary, PHEV and FCV are increasingly useful in the segment of medium-size and large cars because only a small fraction of energy is needed to be carried in the battery.
In the face of accelerating species extinctions, map-based prioritization systems are increasingly useful to decide where to pursue conservation action most effectively.
These prognostic and predictive factors are increasingly useful to guide therapy decisions in individual breast cancer patients.
Databases are increasingly useful in biology as huge amount of data is generated by high throughput techniques such as Microarray technology.
Personally I've found the service to be increasingly useful as I use multiple machines.
Since variationBlast has been designed to identify GVs using long reads, it will be increasingly useful as next-generation sequencing technologies point towards the generation of longer reads.
Such models should be increasingly useful in many parts of Latin America, where issues of sustainable land use are approaching critical dimensions.
Assessment of the epidemiology of these infections may be increasingly useful because newer forms of biologic, immunosuppressive therapies have become widely used for treating patients with rheumatoid arthritis, Crohn disease, and other autoimmune inflammatory conditions.
Although technology has its limitations in the making of wine, it is increasingly useful in the buying and selling of it.
