Patents by Inventor Richard N. Leyden
Richard N. Leyden 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: 8334025Abstract: The present invention provides a low viscosity photocurable composition including (i) a cationically curable component (ii) a free radically active component (iii) an antimony-free cationic photoinitiator (v) a free radical photoinitiator, and (vi) a toughening agent. The photocurable composition can be cured using rapid prototyping techniques to form three-dimensional articles which can be used in various aerospace and investment casting applications.Type: GrantFiled: October 26, 2006Date of Patent: December 18, 2012Assignee: 3D Systems, Inc.Inventors: John Wai Fong, Richard N. Leyden, Laurence Messe, Ranjana C. Patel, Carole Chapelat
-
Patent number: 8227048Abstract: The present invention provides a clear, low viscosity photocurable composition including (i) a cationically curable compound (ii) an acrylate-containing compound (iii) a polyol-containing mixture (iv) a cationic photoinitiator and (v) a free radical photoinitiator. The photocurable composition can be cured using rapid prototyping techniques to form opaque-white three-dimensional articles having ABS-like properties.Type: GrantFiled: September 12, 2006Date of Patent: July 24, 2012Assignee: 3D Systems, Inc.Inventors: Richard N. Leyden, Laurence Messe, Frank Tran, David L. Johnson, John Wai Fong, Carole Chapelat, Ranjana C. Patel
-
Publication number: 20110293891Abstract: The present invention provides a clear, low viscosity photocurable composition including (i) a cationically curable compound (ii) an acrylate-containing compound (iii) a polyol-containing mixture (iv) a cationic photoinitiator and (v) a free radical photoinitiator. The photocurable composition can be cured using rapid prototyping techniques to form opaque-white three-dimensional articles having ABS-like properties.Type: ApplicationFiled: September 12, 2006Publication date: December 1, 2011Applicant: Huntsman International LLCInventors: Richard N. Leyden, Laurence Messe, Frank Tran, David L. Johnson, John Wal Fong, Carole Chapelat, Ranjana C. Patel
-
Patent number: 7077638Abstract: A variety of support structures and build styles for use in Rapid Prototyping and Manufacturing systems are described wherein particular emphasis is given to Thermal Stereolithography, Fused Deposition Modeling, and Selective Deposition Modeling systems, and wherein a 3D modeling system is presented which uses multijet dispensing and a single material for both object and support formation.Type: GrantFiled: November 26, 2003Date of Patent: July 18, 2006Assignee: 3D Systems, Inc.Inventors: Richard N. Leyden, Jeffrey S. Thayer, Bryan J. L. Bedal, Thomas A. Almquist, Charles W. Hull, Jocelyn M. Earl, Thomas A. Kerekes, Dennis R. Smalley, Christian M. Merot, Richard P. Fedchenko, Michael S. Lockard, Thomas H. Pang, Dinh Ton That
-
Publication number: 20040075196Abstract: A variety of support structures and build styles for use in Rapid Prototyping and Manufacturing systems are described wherein particular emphasis is given to Thermal Stereolithography, Fused Deposition Modeling, and Selective Deposition Modeling systems, and wherein a 3D modeling system is presented which uses multijet dispensing and a single material for both object and support formation.Type: ApplicationFiled: November 26, 2003Publication date: April 22, 2004Applicant: 3D Systems, Inc.Inventors: Richard N. Leyden, Jeffrey S. Thayer, Bryan J.L. Bedal, Thomas A. Almquist, Charles W. Hull, Jocelyn M. Earl, Thomas A. Kerekes, Dennis R. Smalley, Christian M. Merot, Richard P. Fedchenko, Michael S. Lockard, Thomas H. Pang, Dinh Ton That
-
Patent number: 6660209Abstract: A variety of support structures and build styles for use in Rapid Prototyping and Manufacturing systems are described wherein particular emphasis is given to Thermal Stereolithography, Fused Deposition Modeling, and Selective Deposition Modeling systems, and wherein a 3D modeling system is presented which uses multijet dispensing and a single material for both object and support formation.Type: GrantFiled: August 6, 2001Date of Patent: December 9, 2003Assignee: 3D Systems, Inc.Inventors: Richard N. Leyden, Jeffrey S. Thayer, Bryan J. L. Bedal, Thomas A. Almquist, Charles W. Hull, Jocelyn M. Earl, Thomas A. Kerekes, Dennis R. Smalley, Christian M. Merot, Richard P. Fedchenko, Michael S. Lockard, Thomas H. Pang, Dinh Ton That
-
Patent number: 6508971Abstract: A variety of support structures and build styles for use in Rapid Prototyping and Manufacturing systems are described wherein particular emphasis is given to Thermal Stereolithography, Fused Deposition Modeling, and Selective Deposition Modeling systems, and wherein a 3D modeling system is presented which uses multijet dispensing and a single material for both object and support formation.Type: GrantFiled: August 6, 2001Date of Patent: January 21, 2003Assignee: 3D Systems, Inc.Inventors: Richard N. Leyden, Jeffrey S. Thayer, Bryan J. L. Bedal, Thomas A. Almquist, Charles W. Hull, Jocelyn M. Earl, Thomas A. Kerekes, Dennis R. Smalley, Christian M. Merot, Richard P. Fedchenko, Michael S. Lockard, Thomas H. Pang, Dinh Ton That
-
Publication number: 20020011693Abstract: A variety of support structures and build styles for use in Rapid Prototyping and Manufacturing systems are described wherein particular emphasis is given to Thermal Stereolithography, Fused Deposition Modeling, and Selective Deposition Modeling systems, and wherein a 3D modeling system is presented which uses multijet dispensing and a single material for both object and support formation.Type: ApplicationFiled: August 6, 2001Publication date: January 31, 2002Applicant: 3D Systems, Inc.Inventors: Richard N. Leyden, Jeffrey S. Thayer, Bryan J.L. Bedal, Thomas A. Almquist, Charles W. Hull, Jocelyn M. Earl, Thomas A. Kerekes, Dennis R. Smalley, Christian M. Merot, Richard P. Fedchenko, Michael S. Lockard, Thomas H. Pang, Dinh Ton That
-
Publication number: 20020008335Abstract: A variety of support structures and build styles for use in Rapid Prototyping and Manufacturing systems are described wherein particular emphasis is given to Thermal Stereolithography, Fused Deposition Modeling, and Selective Deposition Modeling systems, and wherein a 3D modeling system is presented which uses multijet dispensing and a single material for both object and support formation.Type: ApplicationFiled: August 6, 2001Publication date: January 24, 2002Applicant: 3D Systems, Inc.Inventors: Richard N. Leyden, Jeffrey S. Thayer, Bryan J.L. Bedal, Thomas A. Almquist, Charles W. Hull, Jocelyn M. Earl, Thomas A. Kerekes, Dennis R. Smalley, Christian M. Merot, Richard P. Fedchenko, Michael S. Lockard, Thomas H. Pang, Dinh Ton That
-
Patent number: 6305769Abstract: A system and associated method for forming three-dimensional objects under computer control and from a material which may be rendered flowable and then dispensed on a layer-by-layer basis. The layers of the material solidify or otherwise physically transform upon being dispensed thereby forming successive cross-sections. The dispensing process is repeated whereby successive layers adhere to each other thereby forming the object.Type: GrantFiled: June 13, 1997Date of Patent: October 23, 2001Assignee: 3D Systems, Inc.Inventors: Jeffrey S. Thayer, Thomas A. Almquist, Christian M. Merot, Bryan J. L. Bedal, Richard N. Leyden, Keith Denison, John S. Stockwell, Anthony L. Caruso, Michael S. Lockard
-
Patent number: 6270335Abstract: A variety of support structures and build styles for use in Rapid Prototyping and Manufacturing systems are described wherein particular emphasis is given to Thermal Stereolithography, Fused Deposition Modeling, and Selective Deposition Modeling systems, and wherein a 3D modeling system is presented which uses multijet dispensing and a single material for both object and support formation.Type: GrantFiled: February 18, 1999Date of Patent: August 7, 2001Assignee: 3D Systems, Inc.Inventors: Richard N. Leyden, Jeffrey S. Thayer, Bryan J. L. Bedal, Thomas A. Almquist, Charles W. Hull, Jocelyn M. Earl, Thomas A. Kerekes, Christian M. Merot, Richard P. Fedchenko, Michael S. Lockard, Thomas H. Pang
-
Patent number: 6264873Abstract: An improved method for stereolithographically making an object by alternating the order in which similar sets of vectors are exposed over two or more layers. In another method, a pattern of tightly packed hexagonal tiles are drawn. Each tile is isolated from its neighboring tiles by specifying breaks of unexposed material between the tiles. Using an interrupted scan method, vectors are drawn with periodic breaks along their lengths. In another method, modulator and scanning techniques are used to reduce exposure problems associated with the acceleration and deceleration of the scanning system when jumping between vectors or changing scanning directions. In another method, a capability for automatically inserting vents an drains into a three-dimensional object representation is provided.Type: GrantFiled: September 24, 1999Date of Patent: July 24, 2001Assignee: 3D Systems, Inc.Inventors: John J. Gigl, Dennis R. Smalley, Jan Richter, Thomas H. Pang, Kerry J. Allen, Chris R. Manners, Paul F. Jacobs, Hop D. Hguyen, Charles W. Hull, Richard N. Leyden
-
Patent number: 6261507Abstract: An improved method for stereolithographically making an object by alternating the order in which similar sets of vectors are exposed over two or more layers. In another method, a pattern of tightly packed hexagonal tiles are drawn. Each tile is isolated from its neighboring tiles by specifying breaks of unexposed material between the tiles. Using an interrupted scan method, vectors are drawn with periodic breaks along their lengths. In another method, modulator and scanning techniques are used to reduce exposure problems associated with the acceleration and deceleration of the scanning system when jumping between vectors or changing scanning directions. In another method, a capability for automatically inserting vents an drains into a three-dimensional object representation is provided.Type: GrantFiled: September 24, 1999Date of Patent: July 17, 2001Assignee: 3D Systems, Inc.Inventors: John J. Gigl, Dennis R. Smalley, Thomas H. Pang, Kerry J. Allen, Paul F. Jacobs, Hop D. Nguyen, Charles W. Hull, Richard N. Leyden
-
Publication number: 20010003004Abstract: A variety of support structures and build styles for use in Rapid Prototyping and Manufacturing systems are described wherein particular emphasis is given to Thermal Stereolithography, Fused Deposition Modeling, and Selective Deposition Modeling systems, and wherein a 3D modeling system is presented which uses multijet dispensing and a single material for both object and support formation.Type: ApplicationFiled: February 18, 1999Publication date: June 7, 2001Inventors: RICHARD N. LEYDEN, JEFFREY S. THAYER, BRYAN J. L. BEDAL, THOMAS A. ALMQUIST, CHARLES W. HULL, JOCELYN M. EARL, THOMAS A. KEREKES, CHRISTIAN M. MEROT, RICHARD P. FEDCHENKO, MICHAEL S. LOCKARD, THOMAS H. PANG
-
Patent number: 6193923Abstract: A variety of support structures and build styles for use in Rapid Prototyping and Manufacturing systems are described wherein particular emphasis is given to Thermal Stereolithography, Fused Deposition Modeling, and Selective Deposition Modeling systems, and wherein a 3D modeling system is presented which uses multijet dispensing and a single material for both object and support formation.Type: GrantFiled: July 14, 1999Date of Patent: February 27, 2001Assignee: 3D Systems, Inc.Inventors: Richard N. Leyden, Jeffrey S. Thayer, Bryan J. L. Bedal, Thomas A. Almquist, Charles W. Hull, Jocelyn M. Earl, Thomas A. Kerekes, Dennis R. Smalley, Christian M. Merot, Richard P. Fedchenko, Michael S. Lockard, Thomas H. Pang, Dinh Ton That
-
Patent number: 6133355Abstract: A novel thermopolymer material adapted for use in thermal stereolithography. More particularly, a thermopolymer material comprising a mixture of: a low shrinkage polymer resin; a low viscosity material such as paraffin wax; at least one microcrystalline wax; a toughening polymer; a plasticizer. Alternative embodiments further include components to improve the materials ability to transfer heat and to improve strength. The subject material, together with the described process greatly reduce part building distortions while retaining desirable toughness, strength and jetting properties.Type: GrantFiled: June 12, 1997Date of Patent: October 17, 2000Assignee: 3D Systems, Inc.Inventors: Richard N. Leyden, Charles W. Hull, Dinh Ton That
-
Patent number: 5902537Abstract: Methods and apparatus for use in building three-dimensional objects on substantially a cross-sectional basis including methods and apparatus for forming successive layers using counter-rotating rollers, ink jet recoaters, spinning members which sling material, applicator bars that dispense material via a meniscus and/or independently dispensed streams, and also including methods and apparatus to determine a preferred region over which to form a layer and to check for building errors.Type: GrantFiled: January 28, 1997Date of Patent: May 11, 1999Assignee: 3D Systems, Inc.Inventors: Thomas A. Almquist, Charles W. Hull, Jeffrey S. Thayer, Richard N. Leyden, Paul F. Jacobs, Dennis R. Smalley
-
Patent number: 5855836Abstract: A novel thermopolymer material adapted for use in thermal stereolithography. More particularly, a thermopolymer material comprising a mixture of: a low shrinkage polymer resin; a low viscosity material such as paraffin wax; at least one microcrystalline wax; a toughening polymer, a plasticizer. Alternative embodiments further include components to improve the materials ability to transfer heat and to improve strength. The subject material, together with the described process greatly reduce part building distortions while retaining desirable toughness, strength and jetting properties.Type: GrantFiled: June 12, 1997Date of Patent: January 5, 1999Assignee: 3D Systems, Inc.Inventors: Richard N. Leyden, Charles W. Hull
-
Patent number: 5248456Abstract: An improved stereolithographic apparatus and method is described. In one embodiment, the improvement includes immersing at least a portion of a part in a volume of a liquid solvent in a vapor degreaser while subjecting the portion to ultrasonic agitation to substantially remove excess resin. Several examples of solvents are provided, including ethanol, and Freon TMS. In a second embodiment, the improvement includes building the part on a layer of liquid resin supported by a volume of a dense, immiscible, and UV transparent intermediate liquid, and integratably immersing at least a portion of the built part in the intermediate liquid, and then either subjecting the immersed portion to ultrasonic agitation to substantially remove excess resin, or subjecting the immersed portion to UV light. Several examples of intermediate liquids are provided, including perfluorinated fluids, such as Fluorinert FC-40, and water-based salt solutions, such as solutions of magnesium sulfate or sodium chloride in water.Type: GrantFiled: May 17, 1991Date of Patent: September 28, 1993Assignee: 3D Systems, Inc.Inventors: Herbert E. Evans, Jr., Ernest W. Ertley, Charles W. Hull, Richard N. Leyden
-
Patent number: 5234636Abstract: Methods of coating stereolithographic parts and smoothing over characteristic surface discontinuities having alternating recesses and peaks. A stereolithographic part is first substantially covered with a substance capable of becoming less viscous when heated at a temperature which does not substantially thermally degrade the part, wherein the heated substance has an appropriate surface tension. Then, the substance is heated to that temperature until the substance flows preferentially into the recesses of the surface discontinuities and away from the peaked surface discontinuities. The substance will thereafter form a short surface connection over the recesses of the discontinuities through the surface tension of the heated substance. The substance is then polymerized or hardened either by cooling, thermally setting or by UV curing.Type: GrantFiled: August 13, 1992Date of Patent: August 10, 1993Assignee: 3D Systems, Inc.Inventors: Charles W. Hull, Richard N. Leyden, Marek Sekowski