Patents Represented by Law Firm Shelsinger, Fitzsimmons, Shlesinger
  • Method for removing oily substances from metallic articles
    Patent number: 5951275
    Abstract: Combustibles such as oily substances adhered to or impregnated in metallic articles are removed, before the articles are subjected to a heat-treatment for carburizing or sintering them, by heating them in a heating chamber with a combustion tube, and discharging the combustibles outside of the chamber after having sucked under a negative air pressure the combustibles into the tube instantly they have been evaporated from the articles and after having burnt the combustibles in the tube.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: September 14, 1999
    Assignee: Kanto Yakin Kogyo K.K.
    Inventor: Susumu Takahashi
  • Omega-hydroxy alkenoic acid
    Patent number: 4192813
    Abstract: An omega-hydroxy alkenoic acid containing 8 or 12 carbon atoms is obtained y the selective reduction of the carbonyl group of an omega-formyl alkenoic acid, for example by the use of sodium borohydride, and wherein the starting acid is produced by the ozonization and transposition of a polyunsaturated hydrocarbon cycloolefin.
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: March 11, 1980
    Assignee: Snia Viscoas Societa Nazionale Industria Applicazioni Viscosa S.p.A.
    Inventor: Francesco Siclari