Method and apparatus for providing security for computer software
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 1, 1984
Grant Date -
N/A
app pub date -
May 26, 1981
filing date -
May 26, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Security for computer software is achieved by providing each purchaser of a software package with an electronic security device which must be operatively connected to the purchaser's computer. The software sends coded interrogation signals to the electronic security device which processes the interrogation signals and transmits coded response signals to the software. The program will not be executed unless the software recognizes the response signals according to preselected security criteria.
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