Electronic book with restricted access features
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 10, 2012
Grant Date -
N/A
app pub date -
Jun 25, 1999
filing date -
Dec 2, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A viewer for displaying electronic books and having various features for restricting access to their content. A user may assign ratings to stored electronic books, or use standard ratings, and assign access levels to potential users. The ratings and access levels determine which electronic books, or portions of the electronic books, a particular user may access on the viewer.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully