Even the active companies are skeptical and restricting themselves mainly to basic research, rather than trying to develop uses for the new materials.

The company restricted its operations entirely to brewing by 1916.

Throughout the 18th and 19th century ideas that dominant private companies or legal monopolies could excessively restrict trade were further developed in Europe.

Only one company restricted the work of men whose partners were trying to conceive.

Several Finnish companies restrict their employees' right to unite in Mexico.

He declined to comment on whether the company would restrict its future contracts with Texaco.

Many companies offer four-wheel-drive vehicles but restrict where they can be driven.

This month, the company restricted the use of loans in which borrowers state their income without verification.

Young people will have more trouble finding jobs as companies restrict hiring.

The team studied 24 ways in which a company may restrict shareholder rights and combined them into an overall index.