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:
Sep. 01, 1992
Filed:
Dec. 22, 1989
Applicant:
Inventors:
John A Lawton, Landenberg, PA (US);
Roxy N Fan, E. Brunswick, NJ (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; B29D / ; G03B / ; G03C / ;
U.S. Cl.
CPC ...
430269 ; 264 22 ; 264 18 ; 264139 ; 264160 ; 264163 ; 264 401 ; 264284 ; 264293 ; 2642976 ; 264299 ; 264241 ; 264253 ; 264308 ; 264313 ; 264316 ; 264338 ; 4251744 ; 4251740 ; 425 89 ; 425218 ; 425 90 ; 425 93 ; 427 531 ; 427 541 ; 118 56 ; 118261 ; 118403 ; 118404 ; 118406 ; 118407 ; 118413 ; 118415 ; 118422 ; 118423 ; 118428 ; 264 58 ; 264212 ; 264213 ; 264239 ;
Abstract
An apparatus and method for fabricating integral three-dimensional objects from successive layers of photoformable compositions by exposing the layers of the composition through a detachable flexible transparent film, one side of the film being in contact with the composition and the other side of the film with a rigid transparent plate, which guides and supports the film.