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:
May. 11, 1999
Filed:
Jan. 28, 1997
Thomas A Almquist, San Gabriel, CA (US);
Charles W Hull, Santa Clarita, CA (US);
Jeffrey S Thayer, Simi Valley, CA (US);
Richard N Leyden, Topanga Canyon, CA (US);
Paul F Jacobs, La Crescenta, CA (US);
Dennis R Smalley, Newhall, CA (US);
3D Systems, Inc., Valencia, CA (US);
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.