Heat, sound or noise insulation, absorption, or reflection

Official title: Heat, sound or noise insulation, absorption, or reflection (forms of, or arrangements in, rooms for influencing or directing sound E04B1/99); Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls (fire protection E04B1/94; elements chiefly adapted for structural purposes E04C1/00 - E04C3/00; chiefly adapted for surface coverings E04F13/00; as underlayers for floor coverings E04F15/18; closures for wall or like openings E06B)

E04B1/74 (Heat, sound or noise insulation, absorption, or reflection) appears on 3,848 US grants and 4,139 published applications in this corpus.