The correct use of the trademark "Pyrex"

CORRECT USE OF THE TRADE-MARK "PYREX"

The Corning Glass Works of Corning, New York, is waging an active campaign against the tendency on the part of authors and the general public to treat their trade-mark "Pyrex" as a common generic noun. "Pyrex" is a trade-mark of Corning Glass Works, registered in the United States and many foreign countries and is applied to a series of resistant glasses from which such articles of ware as baking ware, insulators, frontt glasses for light projectors, laboratory ware such as test tubes, beakers, flasks, dessicators, etc., industrial ware, and many other products are made. These products are all sold under the "Pyrex" trade-mark and in many instances glass compositions will vary to suit the particular service for which the article is intended so that it immediately becomes apparent that "Pyrex" is not the name of a material but is the trade-mark under which a number of resistant glasses having differing characteristics are sold. The proper name of the material from which "Pyrex" articles are made is "resistant glass" and wherever the work "Pyrex" is employed it should always begin with a capital letter and be put in quotation marks to denote the fact that it is a trade-mark and not a common noun.