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:
Jun. 24, 2014
Filed:
Oct. 03, 2008
David E. Langworthy, Kirkland, WA (US);
Gavin Bierman, Cambridge, GB;
Andrew D. Gordon, Cambridge, GB;
Donald F. Box, Yarrowpoint, WA (US);
Bradford H. Lovering, Seattle, WA (US);
Jeffrey C. Schlimmer, Redmond, WA (US);
John D. Doty, Seattle, WA (US);
David E. Langworthy, Kirkland, WA (US);
Gavin Bierman, Cambridge, GB;
Andrew D. Gordon, Cambridge, GB;
Donald F. Box, Yarrowpoint, WA (US);
Bradford H. Lovering, Seattle, WA (US);
Jeffrey C. Schlimmer, Redmond, WA (US);
John D. Doty, Seattle, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
An efficient, logical and expressive type system supports the combination of refinement types and type membership expressions, as well as a top type that encompasses all valid values as members. A bidirectional type checking algorithm is provided for the type system including synthesis and checking steps to statically verify types of code based on the type system.