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| 20090311363 | METHOD USING BLOCK COPOLYMERS FOR MAKING A MASTER MOLD WITH HIGH BIT-ASPECT-RATIO FOR NANOIMPRINTING PATTERNED MAGNETIC RECORDING DISKS - A method for making a master mold that is used in the nanoimprinting process to make patterned-media disks with patterned data islands uses guided self-assembly of a block copolymer into its components. Conventional or e-beam lithography is used to first form a pattern of generally radial stripes on a substrate, with the stripes being grouped into annular zones or bands. A block copolymer material is then deposited on the pattern, resulting in guided self-assembly of the block copolymer into its components to multiply the generally radial stripes into generally radial lines. Various methods, including conventional lithography, guided self-assembly of a second block copolymer, and e-beam lithography, are then used to form concentric rings over the generally radial lines. After etching and resist removal, the master mold has a pattern of either pillars or holes, depending on the method used. | 12-17-2009 |
| 20110235215 | PATTERNED MAGNETIC RECORDING DISK WITH HIGH BIT-ASPECT-RATIO AND MASTER MOLD FOR NANOIMPRINTING THE DISK - A method for making a master mold that is used in the nanoimprinting process to make patterned-media disks with patterned data islands uses guided self-assembly of a block copolymer into its components. Conventional or e-beam lithography is used to first form a pattern of generally radial stripes on a substrate, with the stripes being grouped into annular zones or bands. A block copolymer material is then deposited on the pattern, resulting in guided self-assembly of the block copolymer into its components to multiply the generally radial stripes into generally radial lines. Various methods, including conventional lithography, guided self-assembly of a second block copolymer, and e-beam lithography, are then used to form concentric rings over the generally radial lines. After etching and resist removal, the master mold has a pattern of either pillars or holes, depending on the method used. | 09-29-2011 |
| 20110258841 | Planarization Methods For Patterned Media Disks - A method is provided for forming a plurality of regions of magnetic material in a substrate having a first approximately planar surface. The method comprises the steps of fabricating projections in the first surface of the substrate, depositing onto the first surface a magnetic material in such a way that the tops of the projections are covered with magnetic material, and depositing filler material atop the substrate so produced. The filler material may then be planarized, for example by chemical-mechanical polishing. In an alternative embodiment magnetic material is deposited on a substrate and portions of it are removed, leaving islands of material. Filler material is then deposited, which may be planarized. | 10-27-2011 |
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| 20080228135 | APPARATUS FOR TREATING A DAMAGED SPINAL DISC - The advantages of this invention are provided by a surgical tool for repairing a damaged spinal disc of a patient comprising: a catheter having a proximal end and a distal end; a guide wire contained within the catheter so that when the guide wire is pulled, the catheter will flex into a non linear shape allowing it to be steered once inserted in the patient; a heating element carried by the catheter, probe or heating member, and connected to a power source so that the heating element can be activated and provide heat to treat a disk; a grasping probe that extends from the catheter so that the grasping probe can be extended out of the catheter; and, a grasping member that can from the distal end of the catheter. | 09-18-2008 |
| 20090018631 | Surgical insertion apparatus - This invention is an apparatus for inserting and reinserting a medical device in a patient comprising a medical device such as a intrathecal catheter, electrical lead and lead wire, a sheath for being inserted into the patient using a hollow medical device so that once the sheath is inserting subcutaneously into the patient, the sheath receives the medical device and the medical device can be position in the patient; and, a separation portion carried by the sheath so that after the sheath receives the medical device. The sheath can be removed from around the medical device by using the separation portion so that the medical device can be inserted in the patient without having to remove the medical completely from the patient thus eliminating the requirement for a second incision. | 01-15-2009 |
| 20120116312 | SURGICAL INSERTION APPARATUS - An apparatus for inserting and reinserting a medical device in a patient comprising a medical device such as an intrathecal catheter, electrical lead and lead wire, a sheath for being inserted into the patient using a hollow medical device so that once the sheath is inserted subcutaneously into the patient, the sheath receives the medical device and the medical device can be positioned in the patient; and, a separation portion carried by the sheath so that the sheath receives the medical device. The sheath can be removed from around the medical device by using the separation portion so that the medical device can be inserted in the patient without having to remove the medical device completely from the patient thus eliminating the requirement for a second incision. | 05-10-2012 |
| 20120116377 | APPARATUS UTILIZING A GUIDE WIRE TO MANEUVER HEATING ELEMENT AND PROBE FOR TREATING DAMAGED SPINAL DISCS - The advantages of this invention are provided by a surgical tool for repairing a damaged spinal disc of a patient comprising: a catheter having a proximal end and a distal end; a guide wire contained within the catheter so that when the guide wire is pulled, the catheter will flex into a non linear shape allowing it to be steered once inserted in the patient; a heating element carried by the catheter, probe or heating member, and connected to an power source | 05-10-2012 |
