US3587418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for forming code marks
Assignee: Eastman Kodak Co
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Filing: 1968-04-26
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Granted: 1971-06-28
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Expires: 1988-04-26
Abstract
Abstract RECTANGULAR CODE MARKS ARE FORMED ON A PHOTOSENSITIVE MEDIUM SUCH AS A PHOTOGRAPHIC FILM OR XEROGRAPHIC PLATE OR WEB BY EXPOSING THE MEDIUM TO A CATHODE-RAY TUBE. THE MARKS ARE DISPLAYED ON THE CATHODE-RAY TUBE. THE LISSAJOUS-TYPE PATTERNS AND LETTING THEM RUN WITHIN THE CONSTRAINT OF THE DIMENSIONS OF THE RECTANGLE TO BE FORMED. IF THE TWO FREQUENCIES ARE SEPARATED BY NONINTEGRAL MULTIPLES, THE LISSAJOUS-TYPE PATTERNS WILL QUICKLY FILL THE RECTANGLE, AT WHICH TIME A NEW PATTERN MAY BE INITIATED.
Inventors
- 👤 Asger T Nielsen
- 👤 El Cajon
- 👤 Donald R Brewer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:02
CPC Classifications
G; G11; G11C; G11C13/00; G11C13/04; G03; G03B; G03B17/00; G03B17/24; G03B17/245; G06; G06K; G06K1/00; G06K1/12; G06K1/126; G09; G09G; G09G1/00; G09G1/06; G09G1/08; G09G1/12; G03B2217/00; G03B2217/24; G03B2217/242; G03B2217/243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |