Patents by Inventor Isaak Vasserman

Isaak Vasserman 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).

  • Polyarylene sulfide resin composition
    Patent number: 6130292
    Abstract: The present invention provides a method of preparing polyarylene sulfide fibers, particularly polyphenylene sulfide fibers, comprising melt blowing a blend of polyarylene sulfide and a polyolefin, wherein the polyolefin is present in the blend in an amount of up to about 40% by weight of the total blend. The present invention also provides fibers, webs, and other products prepared in accordance with the present inventive method.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: October 10, 2000
    Assignee: Pall Corporation
    Inventors: Colin F. Harwood, Isaak Vasserman, Thomas C. Gsell
  • Polyarylene sulfide melt blown fibers and products
    Patent number: 6110589
    Abstract: The present invention provides a method of preparing polyarylene sulfide fibers, particularly polyphenylene sulfide fibers, comprising melt blowing a blend of polyarylene sulfide and a polyolefin, wherein the polyolefin is present in the blend in an amount of up to about 40% by weight of the total blend. The present invention also provides fibers, webs, and other products prepared in accordance with the present inventive method.
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: August 29, 2000
    Assignee: Pall Corporation
    Inventors: Colin F. Harwood, Isaak Vasserman, Thomas C. Gsell
  • Polyarylene sulfide melt blowing methods and products
    Patent number: 5690873
    Abstract: The present invention provides a method of preparing polyarylene sulfide fibers, particularly polyphenylene sulfide fibers, comprising melt blowing a blend of polyarylene sulfide and a polyolefin, wherein the polyolefin is present in the blend in an amount of up to about 40% by weight of the total blend. The present invention also provides fibers, webs, and other products prepared in accordance with the present inventive method.
    Type: Grant
    Filed: February 8, 1996
    Date of Patent: November 25, 1997
    Assignee: Pall Corporation
    Inventors: Colin F. Harwood, Isaak Vasserman, Thomas C. Gsell
  • Polymethylpentene filtration medium
    Patent number: 5431829
    Abstract: The present invention provides a filtration medium comprising a fibrous mass of nonwoven polymethylpentene fibers. Moreover, a filter element comprising the aforesaid fibrous mass of nonwoven polymethylpentene fibers surrounding a perforated, hollow, cylindrical tube is also provided. The present invention further provides a filter cartridge which comprises a housing and the aforesaid filter element.
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: July 11, 1995
    Assignee: Pall Corporation
    Inventors: David B. Pall, Colin F. Harwood, Isaak Vasserman