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. 15, 2001
Filed:
Dec. 16, 1998
Stephen Todd, Shrewsbury, MA (US);
David Spencer, Northboro, MA (US);
Andreas Bauer, Acton, MA (US);
David DesRoches, Methuen, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
Program revision compatibility in an object-oriented environment is provided operating between a first and a second program. The first program has a parent object with an initial group of fields and an inherited child object with an initial group of fields. In one embodiment, an expansion descriptor is established in the first program which provides a data storage location for data of a new field. The data of the new field is sent to the data storage location of the expansion descriptor and a child object identifier is associated with the data of the new field in the expansion descriptor. The expansion descriptor is sent to the second program along with object information of the child object corresponding to the initial group of fields. The second program recognizes the expansion descriptor and may update a corresponding child object of the second program regardless of whether the second program has been updated with the new field.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile