US3022212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for heat stamping thermoplastic materials
Assignee: Dow Chemical Co
•
Filing: 1956-09-10
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Granted: 1962-02-20
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Expires: 1976-09-10
Abstract
No abstract record available.
Inventors
- 👤 Russell L Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:31
CPC Classifications
B; B41; B41M; B41M1/00; B41M1/26; B41M1/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR MARKING AND STAMPING THERMOPLASTIC FILMS CONSISTING OF PLACING AN INKED FACING OF A STAMPING TAPE, SAID TAPE BEING COMPOSED OF A HIGH DIELECTRIC MATERIAL, INTO CONTACT WITH A HEAT-SHRINKABLE, ORIENTED THERMOPLASTIC FILM, THEREAFTER SUBJECTING BOTH SAID FILM AND SAID TAPE TO A RADIO FREQUENCY FIELD CAPABLE OF HEATING SAID FILM, AND FINALLY STRIPPING SAID TAPE FROM SAID FILM TO LEAVE AN INKED COATING ON SAID FILM.
Claim 2
Dependent Claim
69 words
A PROCESS FOR MARKING AND STAMPING THERMOPLASTIC FILMS CONSISTING OF PLACING AN INKED FACING OF A STAMPING TAPE, SAID TAPE BEING COMPOSED OF A HIGH DIELECTRIC MATERIAL, INTO CONTACT WITH A HEAT-SHRINKABLE, ORIENTED THERMOPLASTIC FILM, THEREAFTER SUBJECTING BOTH SAID FILM AND SAID TAPE TO A RADIO FREQUENCY FIELD CAPABLE OF HEATING SAID FILM, AND FINALLY STRIPPING SAID TAPE FROM SAID FILM TO LEAVE AN INKED COATING ON SAID FILM.
References Cited (Backward Citations)
US2517581A
Cited
US2404191A
Cited
US2404073A
Cited
US2483462A
Cited
US2459623A
Cited
US2517570A
Cited
US2529717A
Cited
US2510750A
Cited
US2652088A
Cited
US2721821A
Cited
US2631646A
Cited
US2691613A
Cited
US2676416A
Cited
US2810933A
Cited
US2747646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |