Four U.S. manufacturers have been named recipients of the 1991 Shingo Prize for Excellence in Manufacturing.

The prize is administered by the College of Business at Utah State University. The Shingo National Awards ceremony will be held at USU's Taggart Student Center May 8, 7 p.m., in conjunction with the 16th annual Quality and Productivity Seminar of the Partners in Business Program.Some 700 business leaders from across the country are scheduled to attend the ceremony.

Three companies were awarded the prize in the large business category (businesses with more than 500 employees.) They are Dana Corp.'s Minneapolis Gresen plant; the Butyl Polymers Americas group of Exxon Chemical Co., Houston; and Glacier Vandervell, an Iowa manufacturer of engine bearings.

Lifeline Systems Inc. of Watertown, Mass., was named sole recipient of the prize in the small business category.

The Shingo Prize for Excellence in Manufacturing was established to provide impetus for American manufacturers to meet the global challenge, said Ross Robson, executive director of the prize.

He said the philosophy behind the Shingo Prize is that world class status may be achieved through improving manufacturing processes, implementing lean just-in-time philosophies and systems, eliminating waste and achieving zero defects, while continually improving products and costs.