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: 8334025
    Abstract: 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: Grant
    Filed: October 26, 2006
    Date of Patent: December 18, 2012
    Assignee: 3D Systems, Inc.
    Inventors: John Wai Fong, Richard N. Leyden, Laurence Messe, Ranjana C. Patel, Carole Chapelat
  • Patent number: 8227048
    Abstract: 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: Grant
    Filed: September 12, 2006
    Date of Patent: July 24, 2012
    Assignee: 3D Systems, Inc.
    Inventors: Richard N. Leyden, Laurence Messe, Frank Tran, David L. Johnson, John Wai Fong, Carole Chapelat, Ranjana C. Patel
  • Publication number: 20110293891
    Abstract: 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: Application
    Filed: September 12, 2006
    Publication date: December 1, 2011
    Applicant: Huntsman International LLC
    Inventors: Richard N. Leyden, Laurence Messe, Frank Tran, David L. Johnson, John Wal Fong, Carole Chapelat, Ranjana C. Patel
  • Patent number: 7077638
    Abstract: 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: Grant
    Filed: November 26, 2003
    Date of Patent: July 18, 2006
    Assignee: 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: 20040075196
    Abstract: 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: Application
    Filed: November 26, 2003
    Publication date: April 22, 2004
    Applicant: 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: 6660209
    Abstract: 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: Grant
    Filed: August 6, 2001
    Date of Patent: December 9, 2003
    Assignee: 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: 6508971
    Abstract: 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: Grant
    Filed: August 6, 2001
    Date of Patent: January 21, 2003
    Assignee: 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: 20020011693
    Abstract: 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: Application
    Filed: August 6, 2001
    Publication date: January 31, 2002
    Applicant: 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: 20020008335
    Abstract: 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: Application
    Filed: August 6, 2001
    Publication date: January 24, 2002
    Applicant: 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: 6305769
    Abstract: 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: Grant
    Filed: June 13, 1997
    Date of Patent: October 23, 2001
    Assignee: 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: 6270335
    Abstract: 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: Grant
    Filed: February 18, 1999
    Date of Patent: August 7, 2001
    Assignee: 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: 6264873
    Abstract: 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: Grant
    Filed: September 24, 1999
    Date of Patent: July 24, 2001
    Assignee: 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: 6261507
    Abstract: 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: Grant
    Filed: September 24, 1999
    Date of Patent: July 17, 2001
    Assignee: 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: 20010003004
    Abstract: 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: Application
    Filed: February 18, 1999
    Publication date: June 7, 2001
    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: 6193923
    Abstract: 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: Grant
    Filed: July 14, 1999
    Date of Patent: February 27, 2001
    Assignee: 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: 6133355
    Abstract: 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: Grant
    Filed: June 12, 1997
    Date of Patent: October 17, 2000
    Assignee: 3D Systems, Inc.
    Inventors: Richard N. Leyden, Charles W. Hull, Dinh Ton That
  • Patent number: 5902537
    Abstract: 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: Grant
    Filed: January 28, 1997
    Date of Patent: May 11, 1999
    Assignee: 3D Systems, Inc.
    Inventors: Thomas A. Almquist, Charles W. Hull, Jeffrey S. Thayer, Richard N. Leyden, Paul F. Jacobs, Dennis R. Smalley
  • Patent number: 5855836
    Abstract: 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: Grant
    Filed: June 12, 1997
    Date of Patent: January 5, 1999
    Assignee: 3D Systems, Inc.
    Inventors: Richard N. Leyden, Charles W. Hull
  • Patent number: 5248456
    Abstract: 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: Grant
    Filed: May 17, 1991
    Date of Patent: September 28, 1993
    Assignee: 3D Systems, Inc.
    Inventors: Herbert E. Evans, Jr., Ernest W. Ertley, Charles W. Hull, Richard N. Leyden
  • Patent number: 5234636
    Abstract: 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: Grant
    Filed: August 13, 1992
    Date of Patent: August 10, 1993
    Assignee: 3D Systems, Inc.
    Inventors: Charles W. Hull, Richard N. Leyden, Marek Sekowski