Patents Assigned to Holzstoff. S.A.
  • Water proofing agent
    Patent number: 4076885
    Abstract: A high quality water proofing material of easier applicability than those employed previously comprises a non woven fabric of isostatic polypropylene fibres treated with a mixture of bitumen and sulphur.
    Type: Grant
    Filed: October 16, 1975
    Date of Patent: February 28, 1978
    Assignees: Holzstoff. S.A., Viafrance S.A., Societe Nationale Elf Aquitaine (Production) - SNEA(P)
    Inventors: Maurice Brossel, Gilbert Laurent, Daniel Bertannier