Patents by Inventor Allan Elfström

Allan Elfström 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).

  • Patent number: 9956125
    Abstract: An absorbent article has a back sheet with an absorbent core disposed on a body side of the back sheet. On a back side of the back sheet, there is provided a substrate carrying a conductive pattern as a liquid discharge detection circuit that is able to be connected to an electric potential generator for performing liquid discharge detection. At least one or a plurality of holes is formed through the back sheet to communicate portions of the conductive pattern with the absorbent core. Longitudinally adjacent pairs of the revealed portions of the conductive pattern form liquid discharge detection zones for detecting liquid discharge in the absorbent core. The detection zones are longitudinally distributed with respect to the absorbent core.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: May 1, 2018
    Assignee: SCA HYGIENE PRODUCTS
    Inventors: Mattias Bosaeus, Allan Elfström
  • Patent number: 9668924
    Abstract: A method of securing a conductive thread in an absorbent article is disclosed. The method includes: passing a thread through a first surface of the absorbent article; and anchoring a first length of the thread on the first surface by applying adhesive at a position on the first length of the thread between a point at which the thread passes through the surface and a first end of the thread to cover at least a portion of the thread and a portion of the surface.
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: June 6, 2017
    Assignee: SCA HYGIENE PRODUCTS AB
    Inventors: Kent Vartiainen, Mattias Bosaeus, Allan Elfström
  • Patent number: 9585795
    Abstract: A method for detecting a liquid discharge event in an absorbent article including a sensor adapted to generate an electrical output signal representative of a degree of wetness of the absorbent article, wherein the electrical output signal is received by a processing unit. The method including the steps of providing reference data over time representative of a liquid discharge; acquiring liquid discharge data over time in form of the electrical output signal; analyzing the liquid discharge data over time in relation to the reference data over time by the processing unit; and detecting a liquid discharge event based on the analysis. Also disclosed is a system for detecting liquid discharge event in an absorbent article including an absorbent article including a sensor being arranged to generate an output signal representative of an electrical property, and a processing unit adapted to process the output signal generated by the sensor of the absorbent article.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: March 7, 2017
    Assignee: SCA HYGIENE PRODUCTS AB
    Inventors: Mattias Bosaeus, Allan Elfström, Fredrik Mellbin
  • Patent number: 9408757
    Abstract: An absorbent article for absorbing liquid discharge when worn on the crotch region of the body of a user includes a plurality of detection zones for detecting the liquid discharge. Each detection zone is provided by first and second electrically conductive paths that are electrically isolated from one another and arranged so that a liquid discharge between the first and second conductive paths allows electrical current to flow between the first and second conductive paths which is able to be detected to detect the presence of liquid discharge in the respective zone. The plurality of zones are longitudinally distributed with respect to the absorbent article along an absorbent core of the absorbent article, to allow the longitudinal extent of the discharge to be ascertained. The first and second conductive paths are longitudinally spaced from one another. The first and second conductive paths are elongate and are laterally aligned.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: August 9, 2016
    Assignee: SCA HYGIENE PRODUCTS AB
    Inventors: Allan Elfström, Mattias Bosaeus
  • Patent number: 9402771
    Abstract: A method for monitoring use of an absorbent product, such as an incontinence pad or a diaper, worn by a wearer, includes registering a movement of the wearer by way of a mobile device having a movement sensing device, evaluating whether the registered movement is indicative of urinary and/or faecal voiding by the wearer, and providing product-related information to the wearer or a caregiver of the wearer based on said evaluation. In this way, the product-wearer or the caregiver can be provided with valuable information related to the use of the product, such as recommendations on when to change the product, displayed on the mobile device or a mobile device of the caregiver.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: August 2, 2016
    Assignee: SCA HYGIENE PRODUCTS AB
    Inventors: Joshua Carney, Allan Elfström, Mattias Bosaeus
  • Patent number: 9333118
    Abstract: An absorbent article for absorbing liquid discharge of a wearer when worn in the crotch region includes an absorbent core for doing the absorbing of the liquid discharge. A conductive layer is in electrical contact with the absorbent core. The article includes at least one set of first and second electrical contacts secured in intimate physical and electrical contact with the conductive layer such that when an electric potential is applied between the first and second electrical contacts, an electric current travels between them and through the conductive layer in such a way so as to follow a first relatively high impedance path along the conductive layer when the absorbent core is dry and a relatively low impedance path when the absorbent core is wet. This system allows a system verification check, even in the dry state, and the determination of the extent of the wet portion of the absorbent core.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: May 10, 2016
    Assignee: SCA HYGIENE PRODUCTS AB
    Inventors: Allan Elfström, Anders Gustafsson
  • Publication number: 20160051416
    Abstract: A method of securing a conductive thread in an absorbent article is disclosed. The method includes: passing a thread through a first surface of the absorbent article; and anchoring a first length of the thread on the first surface by applying adhesive at a position on the first length of the thread between a point at which the thread passes through the surface and a first end of the thread to cover at least a portion of the thread and a portion of the surface.
    Type: Application
    Filed: March 19, 2013
    Publication date: February 25, 2016
    Applicant: SCA HYGIENE PRODUCTS AB
    Inventors: Kent VARTIAINEN, Mattias BOSAEUS, Allan ELFSTRÖM
  • Patent number: 9194833
    Abstract: An absorbent article for absorbing liquid discharge of a wearer includes conductive loops each in an open loop shape having terminal ends for electrically communicating with opposing poles of an electric potential generator such that current flows around the full conductive loop between the terminal ends when a space defined within the open loop shape is dry and such that liquid discharge in the space defined within the open loop shape is able to cause a short circuit in the conductive loop so that the current flows around a reduced impedance path. The impedance change is measurable to determine a location relative to the terminal ends where the liquid discharge has caused the short circuit. The conductive loops are oriented such that the direction in which the current travels up an outward leg of the respective conductive loop is in substantially the opposite direction for a first conductive loop as for a second conductive loop.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: November 24, 2015
    Assignee: SCA HYGIENE PRODUCTS AB
    Inventors: Mattias Bosaeus, Allan Elfström, Fredrik Mellbin
  • Publication number: 20140371702
    Abstract: An absorbent article has a back sheet with an absorbent core disposed on a body side of the back sheet. On a back side of the back sheet, there is provided a substrate carrying a conductive pattern as a liquid discharge detection circuit that is able to be connected to an electric potential generator for performing liquid discharge detection. At least one or a plurality of holes is formed through the back sheet to communicate portions of the conductive pattern with the absorbent core. Longitudinally adjacent pairs of the revealed portions of the conductive pattern form liquid discharge detection zones for detecting liquid discharge in the absorbent core. The detection zones are longitudinally distributed with respect to the absorbent core.
    Type: Application
    Filed: December 29, 2011
    Publication date: December 18, 2014
    Applicant: SCA HYGIENE PRODUCTS AB
    Inventors: Mattias Bosaeus, Allan Elfström
  • Publication number: 20140350503
    Abstract: A method for detecting a liquid discharge event in an absorbent article including a sensor adapted to generate an electrical output signal representative of a degree of wetness of the absorbent article, wherein the electrical output signal is received by a processing unit. The method including the steps of providing reference data over time representative of a liquid discharge; acquiring liquid discharge data over time in form of the electrical output signal; analysing the liquid discharge data over time in relation to the reference data over time by the processing unit; and detecting a liquid discharge event based on the analysis. Also disclosed is a system for detecting liquid discharge event in an absorbent article including an absorbent article including a sensor being arranged to generate an output signal representative of an electrical property, and a processing unit adapted to process the output signal generated by the sensor of the absorbent article.
    Type: Application
    Filed: December 23, 2011
    Publication date: November 27, 2014
    Applicant: SCA HYGIENE PRODUCTS AB
    Inventors: Mattias Bosaeus, Allan Elfström, Fredrik Mellbin
  • Publication number: 20140327546
    Abstract: A method for monitoring use of an absorbent product, such as an incontinence pad or a diaper, worn by a wearer, includes registering a movement of the wearer by way of a mobile device having a movement sensing device, evaluating whether the registered movement is indicative of urinary and/or faecal voiding by the wearer, and providing product-related information to the wearer or a caregiver of the wearer based on said evaluation. In this way, the product-wearer or the caregiver can be provided with valuable information related to the use of the product, such as recommendations on when to change the product, displayed on the mobile device or a mobile device of the caregiver.
    Type: Application
    Filed: December 21, 2011
    Publication date: November 6, 2014
    Applicant: SCA HYGIENE PRODUCTS AB
    Inventors: Joshua Carney, Allan Elfström, Mattias Bosaeus
  • Publication number: 20130321007
    Abstract: An absorbent article for absorbing liquid discharge of a wearer when worn in the crotch region includes an absorbent core for doing the absorbing of the liquid discharge. A conductive layer is in electrical contact with the absorbent core. The article includes at least one set of first and second electrical contacts secured in intimate physical and electrical contact with the conductive layer such that when an electric potential is applied between the first and second electrical contacts, an electric current travels between them and through the conductive layer in such a way so as to follow a first relatively high impedance path along the conductive layer when the absorbent core is dry and a relatively low impedance path when the absorbent core is wet. This system allows a system verification check, even in the dry state, and the determination of the extent of the wet portion of the absorbent core.
    Type: Application
    Filed: December 20, 2011
    Publication date: December 5, 2013
    Applicant: SCA HYGIENE PRODUCTS AB
    Inventors: Allan Elfström, Anders Gustafsson
  • Publication number: 20130307570
    Abstract: An absorbent article for absorbing liquid discharge of a wearer includes conductive loops each in an open loop shape having terminal ends for electrically communicating with opposing poles of an electric potential generator such that current flows around the full conductive loop between the terminal ends when a space defined within the open loop shape is dry and such that liquid discharge in the space defined within the open loop shape is able to cause a short circuit in the conductive loop so that the current flows around a reduced impedance path. The impedance change is measureable to determine a location relative to the terminal ends where the liquid discharge has caused the short circuit. The conductive loops are oriented such that the direction in which the current travels up an outward leg of the respective conductive loop is in substantially the opposite direction for a first conductive loop as for a second conductive loop.
    Type: Application
    Filed: December 20, 2011
    Publication date: November 21, 2013
    Applicant: SCA HYGIENE PRODUCTS AB
    Inventors: Mattias Bosaeus, Allan Elfström, Fredrik Mellbin