Patents by Inventor Lennart Erwast

Lennart Erwast 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).

  • Method for production of diaper pants having a detachable and resealable connection member
    Patent number: 7390373
    Abstract: Method for producing disposable diaper-pants having openable and resealable side panels. Absorption bodies are applied on a continuous web of inner or outer coversheet material so that front portions and rear portions of adjacent diaper-pants blanks in a web are directed toward each other. A continuous web of outer or inner coversheet material is applied to and secured to the web with absorption bodies. Separate side panels connected to each other by a detachable and resealable connection are secured to side portions of the adjacent front portions or rear portions of the diaper pants. Each diaper-pants blank with side panels is cut from the web and folded about a transverse axis in the crotch with the front and rear edges lying against each other. The side panels of each blank are folded toward and secured to side portions of the rear or front portion which have no side panel.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: June 24, 2008
    Assignee: SCA Hygiene Products AB
    Inventors: Birgitta Karlsson, Johan Skogsberg, Lennart Erwast, Urban Widlund, Ingemark Fernfors
  • Method for production of diaper pants having a detachable and resealable connection member
    Publication number: 20060135928
    Abstract: Method for producing disposable diaper-pants having openable and resealable side panels. Absorption bodies are applied on a continuous web of inner or outer coversheet material so that front portions and rear portions of adjacent diaper-pants blanks in a web are directed toward each other. A continuous web of outer or inner coversheet material is applied to and secured to the web with absorption bodies. Separate side panels connected to each other by a detachable and resealable connection are secured to side portions of the adjacent front portions or rear portions of the diaper pants. Each diaper-pants blank with side panels is cut from the web and folded about a transverse axis in the crotch with the front and rear edges lying against each other. The side panels of each blank are folded toward and secured to side portions of the rear or front portion which have no side panel.
    Type: Application
    Filed: December 27, 2005
    Publication date: June 22, 2006
    Inventors: Birgitta Karlsson, Johan Skogsberg, Lennart Erwast, Urban Widlund, Ingemark Fernfors
  • Method for production of diaper pants
    Publication number: 20040030318
    Abstract: Method for producing disposable diaper-pants having openable and resealable side panels. Absorption bodies are applied on a continuous web of inner or outer coversheet material so that front portions and rear portions of adjacent diaper-pants blanks in a web are directed toward each other. A continuous web of outer or inner coversheet material is applied to and secured to the web with absorption bodies. Separate side panels connected to each other by a detachable and resealable connection are secured to side portions of the adjacent front portions or rear portions of the diaper pants. Each diaper-pants blank with side panels is cut from the web and folded about a transverse axis in the crotch with the front and rear edges lying against each other. The side panels of each blank are folded toward and secured to side portions of the rear or front portion which have no side panel.
    Type: Application
    Filed: March 31, 2003
    Publication date: February 12, 2004
    Applicant: SCA Hygiene Products AB
    Inventors: Birgitta Karlsson, Johan Skogsberg, Lennart Erwast, Urban Widlund, Ingemar Fernfors