Patents by Inventor Claudio Demofonti

Claudio Demofonti 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).

  • Hollow fibres of modified poly-(2,6-dimethyl-p-oxy-phenylene)
    Patent number: 5175196
    Abstract: A hollow fiber of amorphous, hydroxy-ethylated poly-(2,6-dimethyl-p-oxyphenylene) (PPO-OH) with a glass transition temperature (Tg) of from 180.degree. to 200.degree. C. is disclosed, which is formed by a high-density, microporous layer on a macroporous backing, and having an outer diameter comprised within the range of from 450 to 550 .mu.m and an inner diameter comprised within the range of from 250 to 400 .mu.m.The process for preparing the hollow fibre and the use of said fibre in the processes of separation of gas mixtures are disclosed as well.
    Type: Grant
    Filed: June 12, 1992
    Date of Patent: December 29, 1992
    Assignee: Eniricerche S.p.A.
    Inventors: Alessandro Stopponi, Claudio Demofonti, Claudio Valentini, Raffaello Sisto, Ugo Pedretti