Patents by Inventor Charles John Molnar

Charles John Molnar 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).

  • Meltblown ionomer microfibers and non-woven webs made therefrom for gas filters
    Patent number: 5882519
    Abstract: Ethylene/carboxylic acid ionomers may be made, using a meltspun, and particularly meitblown process, into microfibers and thence to filter webs which are efficient gas filters for removing particles having a diameter of from 0.5 to 20 microns from a gas. The webs are effective without a deliberate specific post-charging operation during production. A deliberate post-charging operation can also be carried out to result in further efficiency.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: March 16, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard Tien-Hua Chou, Patrick Stephen Ireland, Charles John Molnar, Hyun Sung Lim, Hyunkook Shin
  • Meltblown ionomer microfibers and non-woven webs made therefrom for gas filters
    Patent number: 5817415
    Abstract: Ethylene/carboxylic acid ionomers may be made, using a meltspun, and particularly meltblown process, into microfibers and thence to filter webs which are efficient gas filters for removing particles having a diameter of from 0.5 to 20 microns from a gas. The webs are effective without a deliberate specific post-charging operation during production. A deliberate post-charging operation can also be carried out to result in further efficiency.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: October 6, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard Tien-Hua Chou, Patrick Stephen Ireland, Charles John Molnar, Hyun Sung Lim, Hyunkook Shin
  • Meltblown ionomer microfibers and non-woven webs made therefrom for gas filters
    Patent number: 5780153
    Abstract: Ethylene/carboxylic acid ionomers may be made, using a meltspun, and particularly meltblown process, into microfibers and thence to filter webs which are efficient gas filters for removing particles having a diameter of from 0.5 to 20 microns from a gas. The webs are effective without a deliberate specific post-charging operation during production. A deliberate post-charging operation can also be carried out to result in further efficiency.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: July 14, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard Tien-Hua Chou, Patrick Stephen Ireland, Charles John Molnar, Hyun Sung Lim, Hyunkook Shin