He developed some quadratic equations still in use.

In doing so, he also developed the brightness scale still in use today.

He developed the basic methods for testing concrete characteristics still in use today.

I think it has developed a third sense, in current use not yet reported but useful: "subtle, intricate moralistic reasoning, informed by a rigorous logic."

This kind of sentence became better developed and remained in wider use in common law systems.

Over this period the paper grew and developed into the format still in use today.

Early naturalists well understood the similarities and differences of living species leading Linnaeus to develop a hierarchical classification system still in use today.

He has also developed drug identification techniques currently in use at the Olympic, professional and collegiate levels.

In 1912 he developed the test which is the basis for the acidity tests still in use today.

He similarly succeeded with many other women whose waters had not yet broken and, with continuing research, helped to develop the treatments in use today.