US Patent No: 6,274,294

Number of patents in Portfolio can not be more than 2000

Cylindrical photolithography exposure process and apparatus

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Abstract

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The present invention is directed to a novel apparatus for exposing a pattern onto a photoresist-coated substrate cylinder and the process of using the apparatus. The cylindrical photolithography apparatus of the present invention comprises two adjacent cylindrical support rollers between which a portion of a flexible photomask extends in the form of a loop. The photoresist-coated substrate cylinder is received in the loop and a tension device, such as a weight, is engaged with the photomask to pull the photomask into contact with the photoresist-coated substrate cylinder over a substantial portion of the circumference of the substrate cylinder. A drive mechanism pulls the photomask over the surface of the photoresist-coated substrate cylinder thereby causing the substrate cylinder to rotate. Exposure light is provided during movement of the photomask to expose a pattern contained on the photomask onto the photoresist. In an alternative embodiment of the present invention, designed for small substrate cylinders and/or substrate cylinders coated with a thick resist, a cylindrical lens is supported above the support cylinders and the photoresist-coated substrate cylinder to focus the light from the light device in a radial direction to increase resolution of the pattern. In applications requiring even higher resolution, a panel defining an aperture slit is placed between the light device and cylindrical lens to further focus the light rays.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ELECTROFORMED STENTS, INC.STILWELL, KS5

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hines, Richard A Stilwell, KS 13 299

Cited Art Landscape

Patent Info (Count) # Cites Year
 
ADVANCED CARDIOVASCULAR SYSTEMS, INC. (3)
5,421,955 Expandable stents and method for making same 621 1994
5,443,500 Intravascular stent 455 1994
5,649,952 Expandable stents and method for making same 206 1996
 
CORDIS CORPORATION (2)
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5,195,984 Expandable intraluminal graft 624 1991
 
BODNAR, ENDRE (1)
4,343,048 Stent for a cardiac valve 233 1980
 
BOSTON SCIENTIFIC SCIMED, INC. (1)
5,366,504 Tubular medical prosthesis 435 1992
 
COMMISSARIAT A L'ENERGIE ATOMIQUE (1)
4,434,547 Process for the manufacture and adjustment of a Josephson effect magnetic flux pick-up 2 1981
 
COOK MEDICAL TECHNOLOGIES LLC (1)
5,443,498 Vascular stent and method of making and implanting a vacsular stent 454 1993
 
EXPANDABLE GRAFTS PARTNERSHIP, 8000 I.H. 10 WEST, STE. 1265, SAN ANTONIO, TX A GENERAL PARTNERSHIP OF TX. (1)
4,733,665 Expandable intraluminal graft, and method and apparatus for implanting an expandable intraluminal graft 2185 1985
 
EXPANDABLE GRAFTS PARTNERSHIP, A TX. GENERAL PARTNERSHIP (1)
4,776,337 Expandable intraluminal graft, and method and apparatus for implanting an expandable intraluminal graft 1154 1986
 
Industrial Research B.V. (1)
5,464,419 Expandable hollow sleeve for the local support and/or reinforcement of a body vessel, and method for the fabrication thereof 60 1994
 
MEDINOL LTD. (1)
5,449,373 Articulated stent 673 1994
 
ROITBERG, BEN Z. (1)
6,019,784 Process for making electroformed stents 73 1997
 
SULZER INTRA THERAPEUTICS, INC. (1)
5,741,429 Flexible tubular device for use in medical applications 193 1995
 
WORLD PROPERTIES, INC. (1)
4,944,087 Method of making a curved plastic body with circuit pattern 22 1988
 
Other [Check patent profile for assignment information] (1)
4,509,426 Autoreversing dual axial speed ink roller 14 1984

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
MOLECULAR IMPRINTS, INC. (48)
7,037,639 Methods of manufacturing a lithography template 26 2002
6,926,929 System and method for dispensing liquids 22 2002
7,077,992 Step and repeat imprint lithography processes 102 2002
6,932,934 Formation of discontinuous films during an imprint lithography process 100 2002
6,908,861 Method for imprint lithography using an electric field 99 2002
6,900,881 Step and repeat imprint lithography systems 89 2002
7,070,405 Alignment systems for imprint lithography 51 2002
7,027,156 Scatterometry alignment for imprint lithography 38 2002
6,916,584 Alignment methods for imprint lithography 78 2002
7,071,088 Method for fabricating bulbous-shaped vias 29 2002
8,349,241 Method to arrange features on a substrate to replicate features having minimal dimensional variability 0 2002
7,019,819 Chucking system for modulating shapes of substrates 26 2002
6,929,762 Method of reducing pattern distortions during imprint lithography processes 28 2002
6,980,282 Method for modulating shapes of substrates 29 2002
6,871,558 Method for determining characteristics of substrate employing fluid geometries 27 2002
7,452,574 Method to reduce adhesion between a polymerizable layer and a substrate employing a fluorine-containing layer 2 2003
7,179,396 Positive tone bi-layer imprint lithography method 22 2003
7,396,475 Method of forming stepped structures employing imprint lithography 29 2003
6,951,173 Assembly and method for transferring imprint lithography templates 33 2003
7,179,079 Conforming template for patterning liquids disposed on substrates 19 2003
7,442,336 Capillary imprinting technique 5 2003
7,136,150 Imprint lithography template having opaque alignment marks 65 2003
7,122,079 Composition for an etching mask comprising a silicon-containing material 8 2004
7,785,526 Imprint alignment method, system, and template 4 2004
7,939,131 Method to provide a layer with uniform etch characteristics 0 2004
7,547,504 Pattern reversal employing thick residual layers 3 2004
7,636,999 Method of retaining a substrate to a wafer chuck 10 2005
7,811,505 Method for fast filling of templates for imprint lithography using on template dispense 1 2005
7,727,453 Step and repeat imprint lithography processes 5 2005
7,338,275 Formation of discontinuous films during an imprint lithography process 40 2005
7,665,981 System to transfer a template transfer body between a motion stage and a docking plate 1 2005
7,670,534 Method to control an atmosphere between a body and a substrate 2 2005
7,803,308 Technique for separating a mold from solidified imprinting material 2 2005
7,906,058 Bifurcated contact printing technique 1 2005
7,906,180 Composition for an etching mask comprising a silicon-containing material 0 2006
7,670,529 Method and system for double-sided patterning of substrates 8 2006
7,981,481 Method for controlling distribution of fluid components on a body 0 2006
7,670,530 Patterning substrates employing multiple chucks 3 2007
7,699,598 Conforming template for patterning liquids disposed on substrates 4 2007
7,635,263 Chucking system comprising an array of fluid chambers 7 2007
8,142,850 Patterning a plurality of fields on a substrate to compensate for differing evaporation times 1 2007
7,547,398 Self-aligned process for fabricating imprint templates containing variously etched features 3 2007
7,802,978 Imprinting of partial fields at the edge of the wafer 3 2007
7,780,893 Method of concurrently patterning a substrate having a plurality of fields and a plurality of alignment marks 4 2007
7,854,867 Method for detecting a particle in a nanoimprint lithography system 1 2007
8,012,395 Template having alignment marks formed of contrast material 0 2009
8,647,554 Residual layer thickness measurement and correction 0 2010
8,366,434 Imprint alignment method, system and template 0 2010
 
BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM (19)
6,873,087 High precision orientation alignment and gap control stages for imprint lithography processes 60 2000
6,964,793 Method for fabricating nanoscale patterns in light curable compositions using an electric field 42 2001
6,921,615 High-resolution overlay alignment methods for imprint lithography 69 2001
6,954,275 Methods for high-precision gap and orientation sensing between a transparent template and substrate for imprint lithography 33 2001
8,016,277 Flexure based macro motion translation stage 1 2001
6,919,152 High resolution overlay alignment systems for imprint lithography 20 2003
6,916,585 Method of varying template dimensions to achieve alignment during imprint lithography 50 2003
7,157,036 Method to reduce adhesion between a conformable region and a pattern of a mold 29 2003
7,090,716 Single phase fluid imprint lithography method 26 2003
6,842,229 Imprint lithography template comprising alignment marks 49 2003
7,060,324 Method of creating a dispersion of a liquid on a substrate 10 2004
8,076,386 Materials for imprint lithography 1 2004
6,955,868 Method to control the relative position between a body and a surface 7 2004
7,060,402 Method of orientating a template with respect to a substrate in response to a force exerted on the template 21 2004
7,098,572 Apparatus to control displacement of a body spaced-apart from a surface 11 2004
6,986,975 Method of aligning a template with a substrate employing moire patterns 26 2004
6,902,853 Dual wavelength method of determining a relative position of a substrate and a template 22 2004
7,432,634 Remote center compliant flexure device 3 2005
8,211,214 Single phase fluid imprint lithography method 0 2008
 
ROLITH, INC. (3)
8,518,633 Large area nanopatterning method and apparatus 1 2009
8,192,920 Lithography method 1 2009
8,425,789 Method and apparatus for anisotropic etching 0 2009
 
BIOSENSORS INTERNATIONAL GROUP, LTD. (2)
7,901,451 Drug-delivery endovascular stent and method for treating restenosis 0 2005
8,252,047 Drug-delivery endovascular stent and method for treating restenosis 0 2011
 
BOSTON SCIENTIFIC SCIMED, INC. (2)
8,221,824 Deforming surface of drug eluting coating to alter drug release profile of a medical device 0 2005
7,935,379 Coated and imprinted medical devices and methods of making the same 1 2005
 
C-FLEX BEARING CO., INC. (1)
7,824,270 Flexible coupling 0 2007
 
CORTADO AG (1)
7,613,798 Method for processing printing orders in server-based networks, and corresponding server-based network 2 2002
 
ELECTROFORMED STENTS, INC. (1)
6,904,658 Process for forming a porous drug delivery layer 55 2003
 
MACDERMID PRINTING SOLUTIONS EUROPE SAS (1)
8,603,583 Embossing device, such as a cylinder or a sleeve 0 2007
 
RABBIT TANAKA CORPORATION LIMITED (1)
6,844,948 Integral hologram revolving lamp and method for making same 3 2002

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