Patent US3576746A successfully refreshed from Google Patents.
Patent US3752693A successfully refreshed from Google Patents.
US3752693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating metallic base material
Assignee: Mitsubishi Chemical Corp
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Filing: 1971-05-12
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Granted: 1973-08-14
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Expires: 1991-05-12
Abstract
Abstract A METALLIC BASE MATERIAL IS TREATED TO IMPROVE CORROSION RESISTANCE, ADHESION BETWEEN THE BASE MATERIAL AND FILM COATED THEREON, AND POST PROCESSABILITY OF SAID COATING BY APPLYING A COATING MATERIAL CONTAINING 1 TO 85% OF FREE ISOCYANATE GROUPS AND THEN IF DESIRED FURTHER APPLYING A RESIN-CONTAINING COATING MATERIAL.
Inventors
- 👤 J Kobayashi
- 👤 K Matsushima
- 👤 M Suetsugi
- 👤 T Kimura
- 👤 H Nakamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:20
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/50; B05D7/52; B05D7/54; B05D7/544; C; C08; C08G; C08G18/00; B05D2202/00
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |