US3605690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing apparatus for transferring magnetic particles to a paper
Assignee: TDK Micronas GmbH
•
Filing: 1970-03-18
•
Granted: 1971-09-20
•
Expires: 1990-03-18
Abstract
Abstract A PRINTING APPARATUS IS PROVIDED TO TRANSFER ATTACHING PLASTIC MAGNETIC PARTICLES TO A PAPER, WHEREIN THE PARTICLES ARE SQUEEZED BETWEEN A MAGNETIC DRUM AND A PAPER USING A STRETCHED METALLIC BELT. THE METALLIC BELT IS HEATED AND MOVED AT THE SAME SPEED AS THE PAPER SUCH THAT THE COMBINATION OF PRESSURE AND HEAT DECREASES THE MELTING POINT OF THE PLASTIC PARTICLES AND CAUSES THEM TO BE TRANSFERRED FROM THE DRUM TO THE PAPER.
Inventors
- 👤 Karel J Staller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:58
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/14; G03G15/16; G03G15/1665; G03G15/167; G03G19/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |