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. 28, 1989
Filed:
Dec. 02, 1985
Applicant:
Inventor:
John Keklak, Sommerville, MA (US);
Assignee:
Schlumberger Systems, Inc., Ann Arbor, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ; G06F / ;
U.S. Cl.
CPC ...
364518 ; 340747 ; 340735 ; 364521 ;
Abstract
A region defining technique for use with a computer aided design system, including a geometry specification step and a loop-chasing step which together locate the complete set of sequences of linked elements which defines the inner and outer boundaries of the region of interest in response to a single user input identifying which region is of interest. The technique permits a user with a single 'pick' to select a desired region of the display for further processing such as cross-hatching or extrusion, and provides a variety of useful applications not previously offered in commercially available computer aided design systems.