Abstract
The purpose of this paper is to present a summary of the patents unveiled in 1974 about NOx control for stationary sources and to discuss in detail ongoing control technology development activities.
(1) Patent Applications Tendency The 108 total patent applications were made in 1974. The many of them aimed at the modifications of equipment design features.
(2) Ongoing Technology Development Activities In the main the low NOx emission burners are being developped about either controlling thermal NO or controlling fuel NO.
