Ladas, Parry, Von Gehr, Goldsmith & Deschamps
Water proofing compositions for cement mortar or concrete and methods of application therefor
 Water proofing compositions containing a Reclaimed butyl rubber of used inner tube scraps as the active component have a high adhesion to cement mortar or concrete and are used for water proofing materials in buildings and civil engineering works. 
Hayakawa Rubber Company Limited
Y C C C C C Y Y C Y C C C E C C C C C
Y10T C09K C09K C09K C04B C09K Y10T Y10T C09K Y10T C09K C09K C09K E02B C09K C09K C04B C09K C09K
additional additional inventional additional inventional additional additional additional additional additional additional additional additional inventional additional additional inventional additional additional
Sekiji Toshihiro
Yokota Fujii