Patents by Inventor Makhmutov Fanil Akhatovich

Makhmutov Fanil Akhatovich 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).

  • Porous membrane with low steam permeability
    Patent number: 6010628
    Abstract: A membrane for dry metal-air chemical current sources which posses high oxygen permeability and provide high barrier properties toward water vapor. The invention includes a semipermeable porous asymmetric membrane based on vinylidene fluoride polymer comprising copolymer of vinylidene fluoride with tetrafluoroethylene at 8-70% mass content of tetrafluoroethylene, the membrane pore size being 0.0015-0.030 .mu.m, and the volume porosity being 35-60%, wherein said asymmetric membrane has a more dense porous structure on one side of the membrane than on another side of said membrane, and wherein the water vapor permeability is not more than 0.178 mg/h. cm.sup.2 and the oxygen permeability is not less than 2.70 m.sup.3 /m.sup.2 atm h.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: January 4, 2000
    Assignee: Iskra Industry Co., Ltd.
    Inventors: Makhmutov Fanil Akhatovich, Kozlova Elena Valentinovna, Vasiljeva Irina Mukhaylovna