Patent US2251907A successfully refreshed from Google Patents.
US3437574A
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US
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Anticorrosive treatment of zinc and metallic materials coated with zinc
Assignee: Kansai Paint Co Ltd
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Filing: 1965-12-06
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Granted: 1969-04-08
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Expires: 1985-12-06
Abstract
No abstract record available.
Inventors
- 👤 Ryuichi Sano
- 👤 Zenji Ota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:37
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/38; C09; C09D; C09D5/00; C09D5/44; C09D5/4484
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3036934A
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US3175964A
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US3132055A
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US3330744A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |