US4370057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of verification of a sheet element, such as a banknote
Assignee: Bank of England
•
Filing: 1980-05-22
•
Granted: 1983-01-25
•
Expires: 2000-05-22
Abstract
Abstract A sheet element, such as a banknote, has an incorporated authenticating device comprising a film having at least one edge which is provided with a non-rectilinear portion or portions shaped to provide coded information relating to the sheet element. The shape and proportions of said at least one edge of the shaped non-rectilinear portion or portions of said film are sensed to generate a signal dependant upon the shape and proportions of the edge of the film so as to derive the coded information.
Inventors
- 👤 Peter D. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:39
CPC Classifications
B; B42; B42D; B42D25/00; B42D25/30; B42D25/355; B42D25/20; B42D25/29; G; G07; G07D; G07D7/00; G07D7/004; G07D7/0047; G07D7/04; G07D7/06; G07D7/12; G07D7/20; B42D25/346; B42D25/40; B42D25/475; Y; Y10; Y10S; Y10S283/00; Y10S283/901; Y10S283/904
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
96 words
A method of varification of a sheet element, such as a banknote, comprising providing the sheet element with an incorporated authenticating device comprising a film having at least one edge which is provided with a non-rectilinear portion or portions which are shaped to provide coded information relating to the sheet element, and sensing the shape and proportions of said at least one edge of said shaped non-rectilinear portion or portions of said film to generate a signal dependent upon the shape and proportions of the edge of the film so as to derive said coded information.
Claim 2
Independent Claim
96 words
A method of varification of a sheet element, such as a banknote, comprising providing the sheet element with an incorporated authenticating device comprising a film having at least one edge which is provided with a non-rectilinear portion or portions which are shaped to provide coded information relating to the sheet element, and sensing the shape and proportions of said at least one edge of said shaped non-rectilinear portion or portions of said film to generate a signal dependent upon the shape and proportions of the edge of the film so as to derive said coded information.
Claim 3
Dependent Claim
52 words
A method according to claim 1 in which said at least one edge is sensed optically by advancing the sheet element relative to an illumination light beam and by sensing the variation in intensity of the light beam a modulated when said at least one edge is illuminated by the light beam.
Claim 4
Dependent Claim
22 words
A method according to claim 2 in which the intensity of the light beam as transmitted through the sheet element is sensed.
Claim 5
Dependent Claim
24 words
A method according to claim 3 in which the sheet element is advanced in a direction substantially lengthwise of said at least one edge.
Claim 6
Dependent Claim
23 words
A method according to claim 3 in which the sheet element is advanced in a direction transverse of said at least one edge.
References Cited (Backward Citations)
US2225314A
Cited
US2530319A
Cited
US2759542A
Cited
US2922893A
Cited
US3069653A
Cited
DE1446851A1
Cited
US3486957A
Cited
US3571568A
Cited
US3512130A
Cited
US3662156A
Cited
US3605619A
Cited
US3645438A
Cited
US3741053A
Cited
US3967400A
Cited
US3858032A
Cited
US4129382A
Cited
US4186943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-24 | 1986-07-26 | 1987-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-24 | 1990-07-26 | 1991-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-24 | 1994-07-26 | 1995-01-25 | $7700.00 | Window Closed / Lapsed |