West German Chancellor, Dr. Kurt George Kiesinger, flew into Tokyo yesterday (Monday) and almost immediately went into conference with Japanese Prime Minister, Mr. Eisaku Sato, on world problems. It was the third day of the West German leader's official four-day tour of Japan.

Chancellor and Mrs. Kiesinger were greeted at Tokyo airport by the Japanese Prime Minister and his wife and more than 50 foreign ambassadors and officials. The two conferred briefly before the West German leader and his wife were driven to the Imperial Palace for an official luncheon with Emperor Hirohito and Empress Nagako.

During his tour of Japan, Dr. Kiesinger, is discussing world problems with Japanese officials.

Among the topics are international monetary problems -- Japan and Germany have two of the world's strongest currencies -- and the political scene in Europe and the Far East.

The nuclear non-proliferation treaty was also on the agenda. Neither country is a signatory to the treaty, although both are regarded as capable of producing nuclear weapons.

A party of 38 West German newsmen accompanied the Chancellor on the tour, which began in Osaka last Saturday (17 May).