Patentverwag began work in the tiered seating sector at the beginning of the 1980's, fitting the grandstands of Milan sports hall with more than 6,000 shell type seats.

Later in 1990, during the world cup, Patentverwag Italia fitted out some important installations and laid the basis at the same time for the company's grandstand department which, with the design of special armchairs, has acquired more and more importance over the years.

Patentverwag has installed at least 300,000 seats for stadiums and made more than two hundred fixed and telescopic grandstands. The telescopic grandstands that have been used in the USA since the second half of the 1800's, have gradually acquired more importance in Italy too, proving themselves to be essential structures wherever the space available has to be exploited in the best possible way for different uses and purposes.

At present, Patentverwag Italia has a range of tiered seating consisting of four basic models of monolithic shell type seats (the models ZERO, UNO, DUE and TRE) and other types with reclining back: models ZX and ZY.

The series of armchairs for grandstands comprises two prestigious models, model LTD and model SPA, the latter being quite extraordinary for its exclusive characteristics. The seat rotates into a vertical position pushed by the force of gravity of the backrest. When folded, the armchair is just ten centimetres wide; when open, the seat and the backrest provide a comfortable seat 58 cm. in depth.

In the telescopic grandstand sector, Patentverwag Italia has produced seating for up to two thousand and has achieved the automatic opening and closing of as many as fourteen tiers of seats with the simple touch of a remote control button.

Amongst the largest installations, mention can be made of the 670-seat grandstand in Pontebba (province of Udine), the 1,800 seat grandstands in the sports hall in Pesaro, the grandstand in the sports hall in Treviglio seating 1,200 on seats of the ZX type with fold-down back: installations of great prestige with superior quality finishes, design and resistance to stress and even to vandalism, features that are also appreciated abroad.

Recent installations of great prestige in Greece and the Middle East confirm the appreciation of the worldwide market to this new model that still in part has to be discovered and appreciated.