Mask fingerprint using mask sensitive circuit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 19, 2024
Grant Date -
Sep 29, 2022
app pub date -
Mar 23, 2021
filing date -
Mar 23, 2021
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
According to a first aspect of the present invention, there is provided a method, a computer system and a computer program product. The method, computer system and computer program product including measuring an initial state of a set of SRAM bits on the wafer, identifying a first set of signature SRAM bits on the wafer, of the set of SRAM bits on the wafer, where the first set of SRAM bits comprise a consistent initial state greater than a first threshold percentage of times, measuring physically dimensions of features of the first set of SRAM bits on the wafer; and identifying a set of signature SRAM bits of the first set of SRAM bits on the wafer, wherein the set of signature SRAM bits comprise physical dimensions of features which correlate to the initial state of each correlated SRAM bit.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2021 Application Filing Year
- G01N Class
- 11893 Applications Filed
- 4411 Patents Issued To-Date
- 37.09 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- G01N Class
- 0 % this patent is cited more than
- 1 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Sep 19, 2027 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 19, 2031 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 19, 2035 |
