Patents by Inventor Roberto Bisel

Roberto Bisel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Halogenated phosphoric esters and flame-proofing compositions for polymeric materials based thereon
    Patent number: 4025468
    Abstract: Polyurethanes such as polyol based polyurethanes are rendered flame resistant by incorporating therein 1-25 parts per hundred parts by weight of a mixture of halogenated phosphoric esters consisting essentially of at least two compounds of the formula: ##STR1## wherein R.sup.1 is a C.sub.1 -C.sub.3 alkyl or an R.sup.2 X group, R.sup.2 is a C.sub.2 -C.sub.3 alkylene group and R.sup.3 and R.sup.4 are independently selected from the group consisting of R.sup.2 X, wherein X is H, or a halogen; ##STR2## wherein R.sup.5 and R.sup.6 are independently selected from the group consisting of R.sup.1, R.sup.
    Type: Grant
    Filed: April 11, 1975
    Date of Patent: May 24, 1977
    Assignee: Montedison Fibre S.p.A.
    Inventors: Mario Modena, Roberto Bisel