Patents Assigned to Legger Col. A.B. LLC
  • Replica disk for data storage
    Patent number: 8705334
    Abstract: Data storage replica disks having a surface relief pattern with replica lands and replica grooves are provided.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: April 22, 2014
    Assignee: Legger Col. A.B. LLC
    Inventors: Jathan D. Edwards, Donald J. Kerfeld
  • Replica disk for data storage
    Patent number: 8593931
    Abstract: Data storage replica disks having a surface relief pattern with replica lands and replica grooves are provided.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: November 26, 2013
    Assignee: Legger Col. A.B. LLC
    Inventors: Jathan D. Edwards, Donald J. Kerfeld
  • REPLICA DISK FOR DATA STORAGE
    Publication number: 20130121128
    Abstract: Data storage replica disks having a surface relief pattern with replica lands and replica grooves are provided.
    Type: Application
    Filed: December 28, 2012
    Publication date: May 16, 2013
    Applicant: LEGGER COL. A.B. LLC
    Inventor: Legger Col. A.B. LLC
  • Reverse optical mastering for data storage disk replicas
    Patent number: 8363534
    Abstract: A data storage master disk and method of making a data storage master disk. The data storage disk master is for use in a data storage disk replication process. The data storage disk molding processes produces replica disks having a surface relief pattern with replica lands and replica grooves. The method includes providing a master substrate. The master substrate is at least partially covered with a layer of photosensitive material. A surface relief pattern having master lands and master grooves is recorded in the data storage disk master, including the steps of exposing and developing the photosensitive material is controlled to form master grooves extending down to a substrate interface between the master substrate and the layer of photosensitive material, such that the width of the master grooves at the substrate interface corresponds to a desired width of the replica lands.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: January 29, 2013
    Assignee: Legger Col. A.B. LLC
    Inventors: Jathan D. Edwards, Donald J. Kerfeld
  • Reverse optical mastering for data storage disk replicas
    Patent number: RE44633
    Abstract: A data storage master disk and method of making a data storage master disk. The data storage disk master is for use in a data storage disk replication process. The data storage disk molding processes produces replica disks having a surface relief pattern with replica lands and replica grooves. The method includes providing a master substrate. The master substrate is at least partially covered with a layer of photosensitive material. A surface relief pattern having master lands and master grooves is recorded in the data storage disk master, including the steps of exposing and developing the photosensitive material is controlled to form master grooves extending down to a substrate interface between the master substrate and the layer of photosensitive material, such that the width of the master grooves at the substrate interface corresponds to a desired width of the replica lands.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: December 10, 2013
    Assignee: Legger Col. A.B. LLC
    Inventors: Jathan D. Edwards, Donald J. Kerfeld