Patents by Inventor Ilan Marcus

Ilan Marcus 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).

  • Staple fibers produced by a bulked continuous filament process and fiber clusters made from such fibers
    Publication number: 20030026987
    Abstract: The present invention relates to surface modified staple fiber, and more particularly, polyester fiberfill and fiber clusters which are made by a completely coupled bulked continuous filament (BCF) process.
    Type: Application
    Filed: September 19, 2002
    Publication date: February 6, 2003
    Inventors: John S. Ahn, Fritz Brakelmann, Ilan Marcus
  • Staple fibers produced by a bulked continuous filament process and fiber clusters made from such fibers
    Patent number: 6492020
    Abstract: The present invention relates to surface modified staple fiber, and more particularly, polyester fiberfill and fiber clusters which are made by a completely coupled bulked continuous filament (BCF) process.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: December 10, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John S. Ahn, Fritz Brakelmann, Ilan Marcus
  • Fiberfill structure
    Patent number: 6053999
    Abstract: A process of preparing new down-like clusters employs a method of point-bonding thermoplastic cut fibers in a stack of webs of carded fibers or continuous filaments in a tow, and then cutting and separating the resulting clusters which have an entirely different structure that is refluffable. Ultrasonic bonding has worked well as the bonding method, but other methods may prove useful.
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: April 25, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Ilan Marcus
  • Fiberfill structure
    Patent number: 5851665
    Abstract: A process of preparing new down-like clusters employs a method of point-bonding thermoplastic cut fibers in a stack of webs of carded fibers or continuous filaments in a tow, and then cutting and separating the resulting clusters which have an entirely different structure that is refluffable. Ultrasonic bonding has worked well as the bonding method, but other methods may prove useful.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: December 22, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Ilan Marcus
  • Imbibition process
    Patent number: 5516473
    Abstract: A process of imbibition drawing is improved by a pretreatment that preferably involves straining an undrawn filament bundle, or other elongated shaped undrawn or partially drawn synthetic polymeric article, while wetted with a cracking agent, before incorporating a desired additive by imbibition drawing, thereby increasing the imbibition capacity of the article, and improved articles incorporating such additives. Alternatively or in addition the pretreatment involves polarizing irradiation, before imbibition drawing.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: May 14, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Nikolai P. Bakeev, Gennadii M. Lukovkin, Ilan Marcus, Anatolii E. Mikushev, Nikolai A. Shitov, Bernhard E. Vanissum, Alexandr L. Volynskii
  • Fillings and other aspects of fibers
    Patent number: 5500295
    Abstract: Fiberballs have been prepared from mechanically-crimped fibers having both a primary crimp and a secondary crimp with specific configurations, especially amplitudes and frequencies. The fiberballs may contain a proportion of other fibers, particularly binder fibers, and used for making molded structures.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: March 19, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Walter B. Halm, William J. Jones, Jr., James F. Kirkbride, Ilan Marcus, Adrian C. Snyder
  • Process for preparing fiberballs
    Patent number: 5338500
    Abstract: Fiberballs are prepared from mechanically-crimped fibers having both a primary crimp and a secondary crimp with specific configurations, especially amplitudes and frequencies. The fiberballs may contain a proportion of other fibers, particularly binder fibers.
    Type: Grant
    Filed: July 19, 1993
    Date of Patent: August 16, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Walter B. Halm, William J. Jones, Jr., James F. Kirkbride, Ilan Marcus, Adrian C. Snyder
  • Method of making bonded non-woven polyester fiber structures using fiberballs
    Patent number: 5294392
    Abstract: In a batch process for repetitive molding of fiberballs into cushions that are required in the same specific shape in large numbers, the molds are filled continuously by means such as a chute.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: March 15, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ilan Marcus
  • Fillings and other aspects of fibers
    Patent number: 5238612
    Abstract: Fiberballs are prepared from mechanically-crimped fibers having both a primary crimp and a secondary crimp with specific configurations, especially amplitudes and frequencies. The fiberballs may contain a proportion of other fibers, particularly binder fibers.
    Type: Grant
    Filed: January 13, 1992
    Date of Patent: August 24, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Walter B. Halm, William J. Jones, Jr., James F. Kirkbride, Ilan Marcus, Adrian C. Snyder
  • Bonded non-woven polyester fiber structures
    Patent number: 5169580
    Abstract: A batch process and apparatus are provided for molding fiberballs, comprising load-bearing fibers and binder fibers, into shaped articles, preferably using hot air within a perforated mold to allow circulation of the air through the fiberballs. The techniques are particularly adapted to molding cushions of varying shapes and sizes, without excessive wastage of material, using relatively simple flexible equipment.
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: December 8, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ilan Marcus
  • Fillings and other aspects of fibers
    Patent number: 5112684
    Abstract: Fiberballs for filling uses have been prepared from mechanically-crimped fibers having both a primary crimp and a secondary crimp with specific configurations, especially amplitudes and frequencies. The fiberballs may contain a proportion of other fibers, particularly binder fibers.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: May 12, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Walter B. Halm, William J. Jones, Jr., James F. Kirkbride, Ilan Marcus, Adrian C. Snyder
  • Relating to bonded non-woven polyester fiber structures
    Patent number: 4940502
    Abstract: A process is provided with apparatus for molding fiberballs into bonded polyester fiber structures in a continuous line system, whereby novel structures may be economically provided with advantages over bonded batts.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: July 10, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Ilan Marcus
  • Polyester fiberfill
    Patent number: 4818599
    Abstract: Blends of polyester fiberfill and binder fiber, wherein the fiberfill is coated with a hydrophilic poly(alkylene oxide) type finish that cures on to the polyester fibers and so provides improved properties in the eventual bonded product, including combinations of improved durability, soft hand, good bonding, reduced flammability and improved moisture transport.
    Type: Grant
    Filed: April 13, 1988
    Date of Patent: April 4, 1989
    Assignee: E. I. DuPont de Nemours and Company
    Inventor: Ilan Marcus
  • Polyester fiberfill
    Patent number: 4794038
    Abstract: Polyester fiberfill having spiral crimp that is randomly-arranged and entangled in the form of fiberballs with binder fibers, preferably with a minimum of hairs extending from the surface of the fiberballs, so as to be air-transportable on account of the low cohesion between the balls. A process for making such fiberballs by repeatedly air-tumbling small tufts of such fiberfill/binder/blend against the wall of a vessel. Improved bonded batts or molded articles or other bonded articles obtained by bonding such fiberballs.
    Type: Grant
    Filed: October 21, 1986
    Date of Patent: December 27, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ilan Marcus
  • Polyester fiberfill and process
    Patent number: 4618531
    Abstract: Polyester fiberfill having spiral-crimp that is randomly-arranged and entangled in the form of fiberballs with a minimum of hairs extending from their surface, and having a refluffable characteristic similar to that of down on account of the low cohesion between the balls. A process for making such fiberballs by repeatedly air-tumbling small tufts of such fiberfill against the wall of a vessel.
    Type: Grant
    Filed: May 15, 1985
    Date of Patent: October 21, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ilan Marcus