Patents Assigned to Omnium de Prospective Industrielle, S.A.
  • Process for recovering hair by dissolving the skin or hide
    Patent number: 4019956
    Abstract: The invention relates to a process permitting the dissolving of the skin or hide and the recovery of the hair.After rehydrating and scouring the skins or hides are plumped and predegraded at an alkaline pH and then dissolved by enzymatic action. The hair obtained is in a satisfactory condition and can be subsequently utilized.
    Type: Grant
    Filed: July 22, 1975
    Date of Patent: April 26, 1977
    Assignee: Omnium de Prospective Industrielle, S.A.
    Inventor: Carnot E. A. R. Saby
  • Process of manufacturing panels composed of units in, for example, ceramic, assembled by a thermoplastic material
    Patent number: 4000027
    Abstract: This invention concerns a process of manufacturing panels composed of units in, for example, ceramic assembled by a thermoplastic material.The interstitial spaces between the units are filled with granules of thermoplastic material. After heating to the highest possible temperature but just lower than the degradation temperature, the units are firmly joined to one another.Such panels can be used as decorative floor or wall-coverings.
    Type: Grant
    Filed: October 20, 1972
    Date of Patent: December 28, 1976
    Assignee: Omnium de Prospective Industrielle, S.A.
    Inventors: Jean-Paul Dalle, Joseph Davidovits
  • Process for treating cellulosic materials by liquid ammonia
    Patent number: 3942948
    Abstract: An improved process for treating fabrics and similar cellulosic materials with liquid ammonia by conventional methods to achieve improved properties, which improvement consists of subjecting the fabric to pneumatic squeezing by means of a compressed gaseous ammonia stream.
    Type: Grant
    Filed: November 20, 1973
    Date of Patent: March 9, 1976
    Assignee: Omnium de Prospective Industrielle, S.A.
    Inventor: Jean-Paul Dalle