The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 1999
Filed:
Jun. 07, 1995
Charles W Hull, Santa Clarita, CA (US);
Stuart T Spence, So. Pasadena, CA (US);
David J Albert, Aptos, CA (US);
Dennis R Smalley, Baldwin Park, CA (US);
Richard A Harlow, Marina Del Rey, CA (US);
Phil Stinebaugh, Sunnyvale, CA (US);
Harry L Tarnoff, Van Nuys, CA (US);
Hop D Nguyen, Little Rock, CA (US);
Charles W Lewis, Van Nuys, CA (US);
Tom J Vorgitch, Simi Valley, CA (US);
David Z Remba, Studio City, CA (US);
3D Systems, Inc., Valencia, CA (US);
Abstract
An improved stereolithography system for generating a three-dimensional object by creating a cross-sectional pattern of the object to be formed at a selected surface of a fluid medium capable of altering its physical state in response to appropriate synergistic stimulation by impinging radiation, particle bombardment or chemical reaction, information defining the object being specially processed to reduce curl and distortion, and increase resolution, strength, accuracy, speed and economy of reproduction even for rather difficult object shapes, the successive adjacent laminae, representing corresponding successive adjacent cross-sections of the object, being automatically formed and integrated together to provide a step-wise laminar buildup of the desired object, whereby a three-dimensional object is formed and drawn from a substantially planar surface of the fluid medium during the forming process.