SATURDAY MAY 24, 1986

24-Hour Time Release
In Drug Dosage System

A controlled time-release dosage system for drugs and vitamins, which can keep them at work for as long as 24 hours, was patented this week by Choong-Gook Jang for the Tech Trade Corporation, New Brunswick, NJ.

BioEnergy Inc., Mr. Jang's employer, also in New Brunswick, has been using the process under the license to produce time-release pellets for several years under patent 4,590,062. Licenses are available to other producers. The process involves dry direct compression of ethyl cellulose, wax and other materials.

The inventor has a Ph.D. in Bio-chemistry from Princeton. He believes that most drugs can be worked into a once-a-day tablet form.