Kenneth Owen, 68, an area resident from 1962 to October 1978 who was active in the electronics industry, died Thursday in a hospital in St. Louis after a heart attack.

He was stricken while on a commercial flight between Dallas and Washington. The plane was diverted to St. Louis where Mr. Owen was pronounced dead.

Mr. Owen was a native of Idaho and served with the Marine Corps in China between 1930 and 1935. He was a graduate of the Capitol Radio Engineering Institute. He was a member of the Institute of Electrical and Electronic Engineers.

During his years in the area, he was a consulting electronics engineer and held patents for several electronics systems. His patents included one for a radio-frequency modular switch system and another for a power actuator for a coaxial power switch.

He also cofounded Delta Electronics in Alexandria in 1962. Since moving to Dallas in October 1978, he had been owner and president of the Electrogeneral Corporation there. He was a former resident of Springfield, Va.

Mr. Owen was a life member of the Disabled American Veterans.

His marriage to the former Margarita Hentz ended in divorce. Mr. Owen's survivors include four sons, David C., of Charles Town, W. Va., Richard S., of Springfield, Jack D., of Parkersburg, W. Va. and Stephen, of San Francisco; two daughters, Candy Vander Clute of Dallas and Janet Cox of Sacramento, and six granchildren.